Outcomes of Discoid Meniscus Repairs in Children and Adolescents

Objectives: Discoid meniscus tear patterns vary, but typically involve horizontal cleavage tears of the central discoid component with or without anterior or posterior meniscocapsular tears. Classically, the central discoid component is saucerized and meniscocapsular tears are repaired. Recent data suggests that meniscal preservation provides long-term benefits over resection1-2. However, many meniscal transplants are performed secondary to unsalvaged or unsalvageable discoid meniscus tears3. Reoperation rates after meniscus repairs vary greatly4-6, with some series reporting high rates of reinjury and reoperation, but there are no large series of pediatric discoid meniscus repairs in the literature. The purpose of this study is to describe the outcomes of meniscus repair and saucerization in pediatric patients with symptomatic discoid menisci. Methods: A single-institution retrospective review was performed of consecutive pediatric patients with surgical treatment of a discoid meniscus tear over a five-year period. Inclusion criteria were age less than 18 years, a symptomatic torn discoid meniscus treated with knee arthroscopy with meniscus repair, and minimum 4-month follow-up. A chart review was performed to describe tear location, tear pattern, and repair type (inside-out, outside-in, all-inside, and hybrid). Hybrid repair constructs were defined as those that used 2 or more repair types. The primary outcome was revision meniscus surgery. Results: Forty-four patients were identified to meet inclusion criteria. There were 23 males and 21 females with a mean age of 12.4 years (range 5 - 17 years). The right knee was affected in 61% of patients. The lateral meniscus was involved in all patients. Tear patterns included anterior meniscocapsular (19 patients, 43%), posterior meniscocapsular (14 patients, 30%), radial (7 patients, 16%), and bucket-handle (5 patients, 11%). Tears most commonly involved the posterior horn and body (21 patients, 48%) or posterior horn (16 patients, 36%) Arthroscopic meniscus repair was performed in all patients. Forty-three patients (98%) also underwent saucerization. Marrow stimulation, as a biological approach to improve repair healing, was performed in 14 patients (32%). The distribution of repair types and number of sutures for each type is listed in the table below. Mean follow-up was 19 months (range 4 - 70 months). Four patients (9%) underwent revision meniscus surgery following the primary repair, including 2 all-inside repairs and 2 partial meniscectomies. There were no statistically significant differences between patients who did or did not require a secondary surgery with respect to sex, age, tear location, tear pattern, repair type, or number of sutures. During follow-up, 9 patients (20%) had surgery for a symptomatic discoid meniscus in the contralateral knee. Conclusion: Saucerization and repair of discoid lateral meniscus tears in the pediatric population have good outcomes with low rates of reoperation. Appropriate saucerization, followed by an arthroscopic assessment of stability and tear patterns is critical to successful treatment of symptomatic discoid menisci. If tissue quality permits, meniscal preservation should be considered in all patients to avoid the consequences of subtotal meniscectomy. [Table: see text]

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OUTCOMES OF DISCOID MENISCUS REPAIRS IN CHILDREN AND ADOLESCENTS

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967119s00030 ◽

2019 ◽

Vol 7 (3_suppl) ◽

pp. 2325967119S0003

Author(s):

Crystal Perkins ◽

Michael Busch ◽

Melissa Christino ◽

S. Clifton Willimon

Keyword(s):

Lateral Meniscus ◽

Meniscus Repair ◽

Meniscus Tear ◽

Discoid Lateral Meniscus ◽

Discoid Meniscus ◽

Tear Pattern ◽

Reoperation Rates ◽

Meniscus Surgery

Background: Discoid meniscus tear patterns vary, but typically involve horizontal cleavage tears of the central discoid component with or without anterior or posterior meniscocapsular tears. Classically, the central discoid component is saucerized and meniscocapsular tears are repaired. Recent data suggests that meniscal preservation provides long-term benefits over resection1-2. However, many meniscal transplants are performed secondary to unsalvaged or unsalvageable discoid meniscus tears3. Reoperation rates after meniscus repairs vary greatly4-6, with some series reporting high rates of reinjury and reoperation, but there are no large series of pediatric discoid meniscus repairs in the literature. The purpose of this study is to describe the outcomes of meniscus repair and saucerization in pediatric patients with symptomatic discoid menisci. Methods: A single-institution retrospective review was performed of consecutive pediatric patients with surgical treatment of a discoid meniscus tear over a five-year period. Inclusion criteria were age less than 18 years, a symptomatic torn discoid meniscus treated with knee arthroscopy with meniscus repair, and minimum 4-month follow-up. A chart review was performed to describe tear location, tear pattern, and repair type (inside-out, outside-in, all-inside, and hybrid). Hybrid repair constructs were defined as those that used 2 or more repair types. The primary outcome was revision meniscus surgery. Results: Forty-four patients were identified to meet inclusion criteria. There were 23 males and 21 females with a mean age of 12.4 years (range 5 – 17 years). The right knee was affected in 61% of patients. The lateral meniscus was involved in all patients. Tear patterns included anterior meniscocapsular (19 patients, 43%), posterior meniscocapsular (14 patients, 30%), radial (7 patients, 16%), and bucket-handle (5 patients, 11%). Tears most commonly involved the posterior horn and body (21 patients, 48%) or posterior horn (16 patients, 36%) Arthroscopic meniscus repair was performed in all patients. Forty-three patients (98%) also underwent saucerization. Marrow stimulation, as a biological approach to improve repair healing, was performed in 14 patients (32%). The distribution of repair types and number of sutures for each type is listed in the table below. Mean follow-up was 19 months (range 4 – 70 months). Four patients (9%) underwent revision meniscus surgery following the primary repair, including 2 all-inside repairs and 2 partial meniscectomies. There were no statistically significant differences between patients who did or did not require a secondary surgery with respect to sex, age, tear location, tear pattern, repair type, or number of sutures. During follow-up, 9 patients (20%) had surgery for a symptomatic discoid meniscus in the contralateral knee. Conclusions: Saucerization and repair of discoid lateral meniscus tears in the pediatric population have good outcomes with low rates of reoperation. Appropriate saucerization, followed by an arthroscopic assessment of stability and tear patterns is critical to successful treatment of symptomatic discoid menisci. If tissue quality permits, meniscal preservation should be considered in all patients to avoid the consequences of subtotal meniscectomy. [Table: see text] Manzione M, Pizzutillo PD, Peoples AB, et al. Meniscectomy in children: a long-term follow-up study. Am J Sports Med 1983;11:111-115. Ahn JH, Kim KI, Wang JH, et al. Long-term results of arthroscopic reshaping for symptomatic discoid lateral meniscus in children. Arthroscopy 2015;31(5):867-873. Kocher MS, Tepolt FA, Vavken P. Meniscus transplantation in skeletally immature patients. J Pediatr Orthop B 2016;25(4)343-348. Steadman JR, Matheny LM, Singleton SB, et al. Meniscus suture repair: minimum 10-year outcomes in patients younger than 40 years compared with patients 40 and older. Am J Sports Med 2015;43(9):2222-2227. Paxton ES, Stock MV, Brophy RH. Meniscal repair versus partial meniscectomy: a systematic review comparing reoperation rates and clinical outcomes. Arthroscopy 2011;27(9):1275-1288. Shieh AK, Edmonds EW, Pennock AT. Revision meniscal surgery in children and adolescents: risk factors and mechanisms for failure and subsequent management. Am J Sports Med 2016;44(4):838-843.

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MENISCUS ROOT TEARS IN CHILDREN AND ADOLESCENTS

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967119s00032 ◽

2019 ◽

Vol 7 (3_suppl) ◽

pp. 2325967119S0003

Author(s):

S. Clifton Willimon ◽

Melissa Christino ◽

Michael Busch ◽

Crystal Perkins

Keyword(s):

Pediatric Patients ◽

Medial Meniscus ◽

Lateral Meniscus ◽

Posterior Root ◽

Associated Injuries ◽

Inclusion Criteria ◽

Root Tear ◽

Meniscus Root ◽

Meniscus Root Tear

Background: The medial and lateral menisci function to optimize force transmission across the knee by increasing contact area between the femur and tibia, absorbing shock, and transmitting loads. Injuries to the meniscus root attachments result in extrusion of the meniscus, impaired distribution of hoop stresses, and degenerative articular wear. The purpose of this study is to describe meniscus root tears, associated injuries, and treatment in a series of pediatric patients Methods: A single-institution retrospective review was performed of consecutive pediatric patients treated for meniscus root tears from 2013 – 2017. Inclusion criteria were patients less than 19 years of age, arthroscopic evidence of a meniscus root tear, and minimum 6 months clinical follow-up. The primary outcome was surgery for revision of the meniscus repair. Results: Twenty-seven patients were identified to fit inclusion criteria. There were 15 males and 12 females with a mean age of 15.2 years (range 7 – 18 years). Basketball, soccer, and football accounted for the majority (56%) of injuries. The lateral meniscus was involved in 21 patients (78%) and the medial meniscus in 6 patients (22%). The posterior meniscus root was torn in 25 patients (93%) and anterior meniscus root in 2 patients (7%). The most common injury pattern was a lateral meniscus posterior root tear (19 patients, 70%). Associated injuries included an ACL tear (19 patients, 70%), PCL tear (6 patients, 22%), and a tear of the opposite meniscus (7 patients, 26%). Two root tears occurred in isolation, and both were of the posterior root of the medial meniscus. All patients were treated surgically with an arthroscopic transosseous root repair in addition to simultaneous treatment for their associated injuries. Mean follow-up was 14 months (range 6 – 37 months). No patients required additional surgery for their meniscus root tear. Two patients had a second surgery on the affected knee: one for revision ACL reconstruction 2 years following the primary procedure and the other for chondroplasty of the patella 2.5 years following the primary procedure. Conclusions: Meniscus root tears occur in pediatric and adolescent patients, most commonly affecting the posterior root of the lateral meniscus and occurring in association with ACL tears. The adolescent meniscus root injury pattern is unique compared to the adult population in which the medial meniscus posterior root is often injured in isolation. Inspection of the meniscus root attachments with deliberate probing to assess the meniscus roots should be a routine part of every knee arthroscopy. In our case series, transosseous root repair resulted in successful outcomes in all patients without need for any additional meniscus treatment.

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Is the present classification of discoid meniscus sufficient?

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967117s00049 ◽

2017 ◽

Vol 5 (2_suppl2) ◽

pp. 2325967117S0004

Author(s):

Hasan Bombaci ◽

Fatma Gökel ◽

Emrah Geçgel ◽

Suavi Aydoğmuş

Keyword(s):

Lateral Meniscus ◽

Partial Meniscectomy ◽

Posterior Horn ◽

Anterior Horn ◽

Meniscus Tear ◽

Discoid Lateral Meniscus ◽

Popliteus Tendon ◽

Discoid Meniscus ◽

The Stability

Introduction: Although uncommon, the discoid meniscus is quite prone to injury due to its abnormal shape and abnormal histology. The weak or absent peripheral attachment of the discoid meniscus causes instability even after partial meniscectomy. Therefore, recently, after resection of the central part of the meniscus, in which tears develop most frequently, the remnant of the meniscus is preferred to repair. In that time, the Watanabe classification, which classifies the discoid meniscuses in three groups, is used to plan treatment. However, discoid meniscus can develop in the different forms from these three main shapes. In the present study we aimed to analyse the discoid meniscuses, which we encountered during arthroscopic procedures in the knee, according to Watanabe classification. Patients and methods: The lateral discoid meniscuses in the 36 knees of 35 patients, who were operated on because of meniscus tear of either the discoid lateral meniscus itself or the normal medial meniscus, were classified according to Watanabe classification. Results: While the lateral discoid meniscuses were classified as “complete” in 13, “incomplete” in 15 knees, the meniscuses were very thin or absent in the central (one knee) or in the postero-lateral regions (seven knees) of discoid meniscus ( Figure 1 ). In this series this opening was next to the popliteus tendon except in one case. In these cases, the continuity of the meniscus between middle and posterior horn frequently was not possible after central partial meniscectomy (CPM). On the other hand, posterior horn has stable peripheral attachment unlike the Wrisberg type discoid meniscus. Of the 36 discoid meniscuses, CPM was performed in 21 knees, CPM with anterior horn repair in three, CPM with posterior horn repair in one and anterior horn repair without meniscectomy in two patients. In nine patients the lateral discoid meniscus was left alone. [Figure: see text] Discussion and conclusion: When meniscus sparing methods are intended to perform, both to decide the amount of resection and repair of the remnant, besides the shape of meniscus tear, the stability of discoid meniscus is crucial. This study shows that the Watanabe classification cannot be sufficient to include some specific type of lateral discoid meniscus. We believe that to add the discoid meniscuses, with opening in postero-lateral region next to the popliteus tendon, to the Watanabe classification might be useful to decide the amount of resection or repair of the discoid lateral meniscus.

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DEFINING A SAFE ZONE FOR ALL INSIDE LATERAL MENISCUS REPAIRS IN PEDIATRIC PATIENTS: A MAGNETIC RESONANCE IMAGING STUDY

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967119s00170 ◽

2019 ◽

Vol 7 (3_suppl) ◽

pp. 2325967119S0017

Author(s):

Jennifer Beck ◽

Kendall Shifflett ◽

Danielle Greg ◽

Edward Ebramzadeh ◽

Richard E. Bowen

Keyword(s):

Pediatric Patients ◽

Age Groups ◽

Lateral Meniscus ◽

Safe Zone ◽

Neurovascular Bundle ◽

Posterior Horn ◽

Popliteus Tendon ◽

Anterior Edge ◽

Group I ◽

Significant Difference

Purpose All-inside posterior horn lateral meniscal (PHLM) repair puts the popliteal neurovascular bundle (PVNB) at risk of injury by meniscal repair devices. The purpose of this study was to establish a safe zone of all-inside meniscal fixation in pediatric patients using MRI measurements between the popliteus tendon (PT) and popliteal neurovascular bundle (PNVB). We hypothesize that males and older age groups will have a larger distance between PT and PNVB. Methods Axial MRIs of 250 pediatric (5-16 yrs.) patients were retrospectively reviewed. Patients were grouped by age: group I (5-7yrs.): 61; II (8-10yrs.): 59; III (11-13yrs.): 60; IV (14-16yrs.): 70. At the level of the lateral meniscus, two lines starting at the lateral patella tendon border ending at the medial edge of the PT (D1) and the lateral edge of the PNVB (D2) were made on an axial knee MRI. D3 connected D1 to D2 at the meniscocapsular junction of the PHLM. D4 was derived geometrically, parallel and 8 mm anterior to D3 simulating the anterior edge of the PHLM. Results Analysis showed significant correlation between age and sex for D3 (p<0.0001). For D3, there were significant differences among all age groups, except between groups III and IV. Average (STD) D3 for age groups was: 14.1mm(3.1), 15.8(2.5), 17.0(3.3), 17.2(3.1). For D4, the average (STD) was: 11.9 mm(2.9); 13.9(2.5); 15.4(3.0); 15.2(2.9). There was significant difference in D3 and D4 in males versus females (17.6 vs 15.7 mm; p <0.001; 14.9 vs 13.2; p <0.001), particularly in III and IV (17.0 vs 13.8 and 16.8 vs 13.9). Conclusions This study provides normative data of the distance between popliteal neurovascular bundle and popliteus tendon at the meniscocapsular junction (D3) and anterior edge of the posterior horn lateral meniscus (D4) with the knee in full extension. Combined with previous studies showing the addition of knee flexion increases the distance between the meniscus and the neurovascular bundle, surgeons can use this data to improve safety of posterior horn lateral meniscus repair in pediatric patients.

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MENISCUS REPAIR VERSUS DEBRIDEMENT FOR MENISCAL TEARS IN PEDIATRIC PATIENTS – PREDICTORS FOR TREATMENT BASED ON DEMOGRAPHICS

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967119s00169 ◽

2019 ◽

Vol 7 (3_suppl) ◽

pp. 2325967119S0016

Author(s):

Lauren Agatstein ◽

Alton W. Skaggs ◽

Matthew J. Brown ◽

Nicole Friel ◽

Brian Haus

Keyword(s):

Pediatric Patients ◽

Private Insurance ◽

Meniscal Repair ◽

Meniscus Repair ◽

Meniscus Tear ◽

Children's Hospitals ◽

Children's Hospital ◽

Children’S Hospitals ◽

Meniscus Tears ◽

Children’S Hospital

BACKGROUND: Pediatric and adolescent patients with meniscus tears have a relatively high rate of healing after meniscus repair – up to greater than 80% in the literature. Despite this fact, many patients undergo meniscus debridement for treatment of their meniscus tears. In this study, we investigated the demographic factors predictive of whether a pediatric patient would receive a meniscal repair or a meniscal debridement for their meniscal tear. METHODS: The California statewide ambulatory surgery database (OSHPD) was queried for all patients under 18 years old who underwent meniscus debridement or meniscus repair from 2008-2016. The effect of age, hospital setting (adult versus pediatric hospital), injury chronicity, gender, insurance type, race, and year of service was assessed using logistic regression. RESULTS: A total of 13,906 pediatric patients had meniscal surgery during the timeframe. 83% (11,561/13,906) underwent meniscal debridement and 17% (2,345/13,906) underwent meniscal repair. Age, hospital type, nature of injury, gender, private insurance, being Hispanic, and year of service were statistically significant in predicting the odds of having meniscus repair versus meniscus debridement. Surgery at a children’s hospital increases the odds of having meniscus repair (p < 0.001). Of the 82.6% of pediatric patients (11,491/13,906) treated at non-children’s hospitals, 16% (1839) had repair and 84% underwent debridement (9,652). Of the 17.4% (2,415) treated at children’s hospitals, 21% (506) had repair and 79% (1,909) underwent debridement. As patients age, the odds of receiving a meniscus repair decrease (p < 0.001). Acute meniscus injury (p < 0.001) or private insurance (p < 0.05) increase the odds of having meniscus repair. However, females (p < 0.05) and Hispanics (p < 0.01) had decreased odds of having meniscus repair. As time between injury and surgery progressed, the odds of having meniscus repair versus meniscus debridement increased (p < 0.001). CONCLUSIONS: There is increasing evidence that pediatric patients have successful outcomes after meniscal repair surgery. The results of this study demonstrate that the majority of pediatric patients with meniscus tears undergo a meniscal debridement rather than a repair. Treatment at a children’s hospital, private insurance, and a short time frame between injury and surgery were positive predictors of meniscus repair over debridement. The results of the study may help inform patients, families, and referring physicians about what type of treatment a patient may receive for a meniscus tear, based on their demographic profile.

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Evaluation of Meniscal Tissue after Meniscal Repair Using Ultrahigh Field MRI

The Journal of Knee Surgery ◽

10.1055/s-0040-1709135 ◽

2020 ◽

Author(s):

Beate Stelzeneder ◽

Bernhard Michael Trabauer ◽

Silke Aldrian ◽

David Stelzeneder ◽

Vladimir Juras ◽

...

Keyword(s):

T2 Mapping ◽

Lateral Meniscus ◽

Posterior Horn ◽

Anterior Horn ◽

7 Tesla ◽

Control Group ◽

White Zone ◽

Meniscal Tissue ◽

Lateral Posterior

AbstractThe study evaluates the meniscal tissue after primary meniscal suturing using 7-Tesla (T) magnetic resonance imaging with T2* mapping at 6 and 12 months after surgery to investigate the differences between repaired meniscal tissue and healthy meniscal tissue in the medial and lateral compartment. This prospective study included 11 patients (9m/2f) with a mean age of 30.6 years (standard deviation 9.0). Patients with a meniscal tear that was treated arthroscopically with meniscus suturing, using an all-inside technique, were included. All patients and seven healthy volunteers were imaged on a 7-T whole-body system. T2* mapping of the meniscus was applied on sagittal slices. Regions-of-interest were defined manually in the red and white zone of each medial and lateral meniscus to measure T2*-values. In the medial posterior and medial anterior horn similar T2*-values were measured in the red and white zone at 6- and 12-month follow-up. Compared with the control group higher T2*-values were found in the repaired medial meniscus. After 12-months T2*-values decreased to normal values in the anterior horn and remained elevated in the posterior horn. In the red zone of the lateral posterior horn a significant decrease in the T2*-values (from 8.2 milliseconds to 5.9 milliseconds) (p = 0.04), indicates successful repair; a tendency toward a decrease in the white zone between the 6 and 12 months follow-up was observed. In the red zone of the lateral anterior horn the T2*-values decreased significantly during follow-up and in the white zone of the lateral anterior horn T2*-values were comparable. In comparison to the control group higher T2*-values were measured at 6-months; however, the T2*-values showed comparable values in the repaired lateral meniscus after 12 months. The T2* mapping results of the current study indicated a better healing response of the red zone of the lateral posterior horn compared with the medial posterior horn.

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Prospective Short-term MRI controlled investigation of the healing properties of the Meniscus

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967117s00146 ◽

2017 ◽

Vol 5 (4_suppl4) ◽

pp. 2325967117S0014

Author(s):

Lukas Willinger ◽

Felix Förschner ◽

Andreas Imhoff ◽

Elmar Herbst

Keyword(s):

Classification System ◽

Statistical Significance ◽

Lateral Meniscus ◽

Meniscus Repair ◽

Lysholm Score ◽

Joint Fluid ◽

Short Term ◽

Meniscus Tears ◽

Meniscus Healing

Aims and Objectives: The purpose of the study was to prospectively investigate signal alterations in short-term follow-up after acute meniscus repair on specific magnetic resonance imaging (MRI) scan sequences. It was hypothesized that 1) there are different meniscus healing properties depending on lesion configuration and size, and 2) the tear zone has an influence on the healing properties of the meniscus. Materials and Methods: We conducted this prospective short-term clinical and radiological study to investigate the healing properties of acute meniscus tears. Inclusion criteria were patients (age 18-45 years) with traumatic meniscus lesion, subsequent arthroscopic meniscus repair within 6 weeks and preoperative MRI. Exclusion criteria were age < 18 or >45 years, arthrosis > grade III and multiligamentous knee injuries. Clinical examination and outcome scores (IKDC, KOOS, Lysholm Score) were surveyed preoperatively and 12 weeks after surgery. Meniscus tears were classified according to the ISAKOS meniscus classification system on MRI scans. Radiological assessment using a 3T-MRI was performed preoperatively and 2, 4, 6 and 12 weeks after operation. Meniscus healing were classified according to Henning’s criteria in A) healed, B) partially healed (> 50%) and C) not healed. Data were analyzed using SPSS statistics software version 21 (IBM, New York, USA). Statistical significance was set at a p value of < 0.05. Results: These are preliminary results of 14 patients (13 m, 1w) with a total of 16 meniscus tears. According to the ISAKOS meniscus classification system 9 medial and 7 lateral meniscus tears were included and average tear length was 21.5 mm (6 - 40 mm). 12 tears were located in the rim zone 1 and 4 tears were more medially in zone 2. In 8 (57%) patients an additional anterior cruciate ligament (ACL) reconstruction was performed. Six weeks postoperatively 8 menisci (50%) were deemed healed, 6 menisci (37%) partially healed whereas 2 menisci were not healed (13%). After 12 weeks 9 menisci (56%) were considered healed, 4 menisci (25%) partially healed and 3 menisci (19%) showed intrameniscal joint fluid in more than 50% of meniscus thickness. Two bucket handle tears of the medial meniscus and one radial tear of the lateral meniscus, all located in the red-red zone sized 35 mm, 25 mm and 12 mm, were not healed after 12 weeks. Clinical scores improved significantly 12 weeks after surgery: IKDC Score (preOP: 46.7, postOP: 67.8), KOOS (preOP: 49.7, postOP: 79.1) and Lysholm Score (preOP: 49.5, postOP: 77.7) (p < 0.05). Conclusion: Clinical and radiological follow-up showed good short-term results after meniscus repair. MRI revealed signal alteration in all menisci after 12 weeks, in most instances considered as scar tissue without intrameniscal joint fluid. In this cohohrt tear size and location was not correlated with non-healing. Arthroscopic meniscus repair achieves a high healing response of the meniscus and good clinical outcomes.

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An 11-Year-Old Girl Presenting with Chronic Knee Pain: A Case Report with Diagnostic Dilemma

Acta Medica (Hradec Kralove Czech Republic) ◽

10.14712/18059694.2016.86 ◽

2010 ◽

Vol 53 (4) ◽

pp. 247-249

Author(s):

Muhammad Kamal Maj ◽

Abdul Halim Ar ◽

Syed A. Faisal ◽

Johan Ahmad ◽

Srijit Das

Keyword(s):

Lateral Meniscus ◽

Knee Extension ◽

Posterior Horn ◽

Discoid Meniscus ◽

Diagnostic Challenge ◽

Diagnostic Dilemma ◽

Chronic Knee Pain ◽

Sport Activities ◽

Partial Deficiency ◽

Joint Line Tenderness

Discoid meniscus is the commonest anatomical aberration of the knee joint, among rare cases such as bilateral separated lateral meniscus, accessory lateral meniscus, partial deficiency of the lateral meniscus and double-layered lateral meniscus. An 11-year- old girl presented with history of chronic pain in her right knee for the last 6 months. The problem disturbed her involvement in the sport activities at school. Clinical examination revealed a clicking sensation on knee extension with lateral joint line tenderness. Magnetic resonance imaging (MRI) of her right knee showed torn posterior horn of lateral meniscus. Arthroscopy examination revealed a discoid meniscus with absence posterior horn. Posterior horn deficient discoid meniscus is a rare form of a congenital meniscus anomaly. We as clinicians believe that the abnormal shaped meniscus may pose a diagnostic challenge clinically and radiologically. Presentation of this case may be beneficial for orthopaedicians in their daily clinical practice.

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Meniscal Root Repair in Pediatric Patients: Minimum 2-Year Outcomes (196)

Orthopaedic Journal of Sports Medicine ◽

10.1177/2325967121s00307 ◽

2021 ◽

Vol 9 (10_suppl5) ◽

pp. 2325967121S0030

Author(s):

S. Clifton Willimon ◽

Michael Busch ◽

Asahi Murata ◽

Crystal Perkins

Keyword(s):

Patient Satisfaction ◽

Pediatric Patients ◽

Medial Meniscus ◽

Lateral Meniscus ◽

Injury Pattern ◽

Posterior Root ◽

Root Tear ◽

Meniscus Root ◽

Root Repair

Objectives: The medial and lateral menisci function to optimize force transmission across the knee by increasing contact area between the femur and tibia, absorbing shock, and transmitting loads. The anterior and posterior meniscus roots anchor the meniscus to bone. Injuries to the meniscus root attachments result in extrusion of the meniscus, impaired distribution of hoop stresses, and progressive degenerative articular wear. As a result of these deleterious effects, there has been increasing emphasis on repair of meniscus root injuries to restore structure and function. The purpose of this study is to describe meniscus root tears, associated injuries, and minimum 2-year treatment outcomes in a series of pediatric patients. Methods: A single-institution, IRB approved, retrospective review was performed of consecutive pediatric patients less than 19 years of age with a meniscus root tear treated with transosseous root repair over a 4-year period. All patients had minimum 24-month clinical follow-up. Partial root tears treated with partial meniscectomy or irreparable root tears were excluded. All meniscus root tears were classified arthroscopically based on the tear types described by LaPradeADDIN EN.CITE 9. The primary outcomes were revision meniscus surgery and patient reported outcome scores (PROs) (Lysholm, Patient Satisfaction, and Tegner activity). Results: Twenty-one patients, 11 males and 10 females with a mean age of 15 years (range 7 – 18 years), met inclusion criteria. There were 15 lateral meniscus root tears and 6 medial meniscus root tears. The tears occurred in the posterior root in 20 patients (95%). The most common injury pattern was a lateral meniscus posterior root tear (14 patients, 67%). 18 patients (86%) had an associated ligament tear: 13 ACL tears and 5 PCL tears. Two root tears occurred in isolation, and both were the posterior root of the medial meniscus. The majority of meniscus root tears (15 patients, 71%) were root avulsions (type 5). Mean follow-up was 42 months (range 25 – 71 months). Three patients had a second surgery on the affected knee. In two patients, one with revision ACL reconstruction and one treated with chondroplasty of the patella, the meniscus root repair was noted to be well healed. A third patient sustained a new injury to the knee 4 years following medial meniscus posterior root repair and underwent partial medial meniscectomy. At final follow-up, PROs were obtained for 17 patients (81%). Mean Lysholm score was 91 (range 51 – 100). Mean patient satisfaction score was 8.7 (range 5 – 10). Fourteen of 16 patients (88%) reported returning to the same or higher level of activity following surgery. Conclusions: Meniscus root tears occur in pediatric patients, most commonly as root avulsions of the posterior root of the lateral meniscus and in association with ACL tears. This is unique as compared to the adult population, in which the medial meniscus posterior root is often injured in isolation and radial tears adjacent the root are the most commonly described injury pattern. In our case series, transosseous root repair resulted in successful outcomes in the majority of patients with durable results at midterm follow-up.

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Posterior-approach single-level apical spinal osteotomy in pediatric patients for severe rigid kyphoscoliosis: long-term clinical and radiological outcomes

Journal of Neurosurgery Pediatrics ◽

10.3171/2017.12.peds17404 ◽

2018 ◽

Vol 21 (6) ◽

pp. 606-614 ◽

Cited By ~ 1

Author(s):

Ankit Patel ◽

Sameer Ruparel ◽

Tarun Dusad ◽

Gaurav Mehta ◽

Vishal Kundnani

Keyword(s):

Blood Loss ◽

Cobb Angle ◽

Pediatric Patients ◽

Inclusion Criteria ◽

Single Level ◽

Loss Of Correction ◽

Spinal Osteotomy ◽

Average Loss ◽

The Mean

OBJECTIVESpinal osteotomy in pediatric patients is challenging due to various factors. For correction of severe rigid kyphoscoliosis in children, numerous techniques with anterior or posterior or combined approaches, as well as multilevel osteotomies, have been described. These techniques are associated with prolonged operative times and large amounts of blood loss. The purpose of this study was to evaluate the clinical and radiologically confirmed efficacy of a modification of the apical spinal osteotomy (ASO) technique—posterior-only single-level asymmetric closing osteotomy—in pediatric patients with severe rigid kyphoscoliosis.METHODSThe authors performed a retrospective study of a case series involving pediatric patients with severe spinal deformity operated on by a single surgeon at a single institution over a period of approximately 5 years. The inclusion criteria were age < 14 years, rigid thoracic/thoracolumbar/lumbar kyphosis (> 70°) with or without neurological deficit and with or without scoliosis, and a minimum of 2 years of follow-up. Patients with cervical or lumbosacral kyphoscoliosis were excluded from the study. Demographic and clinical parameters, including age, sex, etiology of kyphoscoliosis, neurological examination status (Frankel grade), and visual analog scale (VAS) and Oswestry Disability Index (ODI) scores, were noted. Operative parameters (level of osteotomy, number of levels fused, duration of surgery, blood loss, and complications) were also recorded. Radiological assessment was done for preoperative and postoperative kyphosis and scoliosis as well as the final Cobb angle. Similarly, sagittal vertical axis (SVA) correction was calculated. Fusion was assessed in all patients at the final follow-up evaluation.RESULTSA total of 26 pediatric patients (18 male and 8 female) with a mean age of 9 years met the inclusion criteria and had data available for analysis, and all of these patients had severe scoliosis as well as kyphosis. Comparison of preoperative and postoperative values showed a significant improvement (p < 0.05) in radiological, clinical, and functional parameters (Cobb angle for scoliosis and kyphosis, SVA, VAS, and ODI). With respect to kyphosis, the mean preoperative Cobb angle was 96.54°, the mean postoperative angle was 30.77°, and the mean angle at final follow-up was 34.81° (average loss of correction of 4.23°), for a final average correction of 64.15%. With respect to scoliosis, the mean preoperative angle was 52.54°, the mean postoperative angle was 15.77°, and the mean angle at final follow-up was 19.42° (average loss of correction of 3.66°), for a final average correction of 60.95%. The preoperative SVA averaged 7.6 cm; the mean SVA improved to 3.94 cm at the end of 2 years. Bony fusion was achieved in all patients. The mean number of levels fused was 5.69. The mean operative time was 243.46 minutes, with an average intraoperative blood loss of 336.92 ml. Nonneurological complications occurred in 15.39% of patients (2 dural tears, 1 superficial infection, 1 implant failure). At the 2-year follow-up, 25 of the 26 patients had maintained or improved their neurological status. One patient developed paraplegia immediately after the operation and recovered only partially.CONCLUSIONSAnalysis of data from this series of 26 cases indicates that this posterior-approach single-level technique is effective for the correction of severe rigid kyphoscoliosis in pediatric patients, providing good clinical and radiological results in most cases.

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