scholarly journals Effect Of Autograft Type On Recovery Of Knee Extensor Mechanism Function Following ACL Reconstruction

2021 ◽  
Vol 53 (8S) ◽  
pp. 131-132
Author(s):  
Tishya Wren ◽  
Tracy Zaslow ◽  
Mia Katzel ◽  
Veronica Beltran ◽  
Adriana Conrad-Forrest ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Mechanism Function ◽  
Knee Extensor Mechanism

scholarly journals Iliotibial Band Autograft Provides the Fastest Recovery of Knee Extensor Mechanism Function in Pediatric Anterior Cruciate Ligament Reconstruction

2021 ◽  
Vol 18 (14) ◽  
pp. 7492
Author(s):  
Tishya L. Wren ◽  
Veronica Beltran ◽  
Mia J. Katzel ◽  
Adriana S. Conrad-Forrest ◽  
Curtis D. VandenBerg
Keyword(s):  
Knee Flexion ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Iliotibial Band ◽  
Cruciate Ligament Reconstruction ◽  
Mechanism Function ◽  
Anterior Cruciate ◽  
Knee Extensor Mechanism

Iliotibial band autograft is an increasingly popular option for pediatric anterior cruciate ligament reconstruction (ACLR). The purpose of this study was to compare recovery of knee extensor mechanism function among pediatric patients who underwent ACLR using iliotibial band (IT), hamstring tendon (HT), quadriceps tendon (QT), and patellar tendon (PT) autografts. One hundred forty-five pediatric athletes (76 female; age 15.0, range 7–21 years) with recent (3–18 months) unilateral ACLR performed drop-jump landing and 45° cutting with 3D motion capture. Knee extensor mechanism function (maximum knee flexion angle, maximum internal knee extensor moment, energy absorption at knee) during the loading phase (foot contact to peak knee flexion) was compared among graft types (20 IT, 29 HT, 39 QT, 57 PT) and sides (ACLR or contralateral) using linear mixed models with sex, age, and time since surgery as covariates. Overall, knee flexion was significantly lower on the operated vs. contralateral side for HT, QT, and PT during both tasks (p < 0.03). All graft types exhibited lower knee extensor moments and energy absorption on the operated side during both movements (p ≤ 0.001). Kinetic asymmetry was significantly lower for IT compared with QT and PT during both movements (p ≤ 0.005), and similar patterns were observed for HT vs. QT and PT (p ≤ 0.07). Asymmetry was similar between IT and HT and between QT and PT. This study found that knee extensor mechanism function recovers fastest in pediatric ACLR patients with IT autografts, followed by HT, in comparison to QT and PT, suggesting that IT is a viable option for returning young athletes to play after ACLR.

Knee Extensor Mechanism Strength and Its Relationship to Patellofemoral Kinematics in Individuals With Arthrofibrosis Within 6 Months After Anterior Cruciate Ligament Reconstruction

2021 ◽  
pp. 1-6
Author(s):  
Ling Zhang ◽  
Shao-bai Wang ◽  
Shuai Fan ◽  
Jiling Ye ◽  
Bin Cai
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Knee Extensor Strength ◽  
Anterior Cruciate ◽  
Patellofemoral Kinematics ◽  
Patellar Mobility ◽  
Knee Extensor Mechanism

Context: Performance in strength and assessment of patellar tracking is important for patients with arthrofibrosis after anterior cruciate ligament (ACL) reconstruction. Objective: The study was to examine the difference of patellofemoral kinematics between the affected and the contralateral limb and to evaluate the relationship between knee extensor strength and patellofemoral kinematics in patients with arthrofibrosis after ACL reconstruction. Design: Cohort study (diagnosis); level of evidence, 3. Setting: Laboratory. Patients: A prospective cohort of 20 patients with arthrofibrosis after ACL reconstruction was recruited. Interventions: A total of 20 patients who underwent arthroscopic reconstruction of the double-bundle ACL with a hamstring tendon autograft received standardized patellofemoral kinematics testing and knee extensor strength testing within 6 months after primary ACL reconstruction. Computed tomography and dual fluoroscopic imaging were used to evaluate in vivo patellofemoral kinematics of affected and contralateral knees during a lunge task. Knee extensor mechanism strength was measured using a handheld dynamometer. Main Outcome Measures: A limb symmetry index of knee strength and patellar mobility was calculated and satisfactory performance defined as ≥90%. Results: There was a statistically significant decrease in the range of patellar inferior shift (P = .020; d = 0.81), flexion (P = .026; d = 0.95), lateral tilt (P = .001; d = 1.04), and lateral rotation (P < .001; d = 0.89) in the affected knee compared with the contralateral knee from 15° to 75° of knee flexion. There was a strong positive linear correlation between knee extensor strength and patellar inferior shift (r = .747; P = .008). A knee extensor strength limb symmetry index <90% was 89% sensitive and 9% specific for limited patellar inferior shift. Conclusions: Patients with arthrofibrosis after ACL reconstruction presented decreased patellar mobility in the arthrofibrotic knee compared with the contralateral knee. The strong correlation between knee extensor strength and patellar inferior shift of the arthrofibrotic knee demonstrates the importance of knee extensor strength in the diagnosis and treatment of patients with knee arthrofibrosis. The knee extensor mechanism strength has high sensitivity but low specificity in identifying a decrease in patellar inferior shift in patients with arthrofibrosis after ACL reconstruction.

Comparison of adverse events and postoperative mobilization following knee extensor mechanism rupture repair: A systematic review and network meta-analysis

Injury ◽  
2017 ◽  
Vol 48 (12) ◽  
pp. 2793-2799 ◽  
Author(s):  
Joseph Serino ◽  
Amin Mohamadi ◽  
Sebastian Orman ◽  
Brian McCormick ◽  
Philip Hanna ◽  
...  
Keyword(s):  
Systematic Review ◽  
Adverse Events ◽  
Meta Analysis ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Knee Extensor Mechanism

scholarly journals Quadriceps reconstruction with suture anchor and Achilles allograft combination in quadriceps tendon re-rupture after primary surgical repair: A novel technique

2021 ◽  
Author(s):  
Erhan Okay ◽  
Mehmet Cenk Turgut ◽  
Abbas Tokyay
Keyword(s):  
Suture Anchor ◽  
Surgical Repair ◽  
Primary Repair ◽  
Full Range ◽  
Knee Extensor ◽  
Quadriceps Tendon ◽  
Extensor Mechanism ◽  
Surgical Options ◽  
Knee Extensor Mechanism

Quadriceps ruptures are one of the pathological conditions of the knee extensor mechanism, accounting for 3% of all tendon injuries. These injuries cause substantial disability of the extensor mechanism. Primary repair is the treatment of choice in acute presentation. In the setting of chronic conditions, the treatment becomes more challenging. Available surgical options include lengthening procedures, and reconstruction with auto graft or allografts. The traditional Scuderi and Codivilla techniques are challenging to perform in degenerative or traumatic retracted ruptures. There is no standard effective treatment in these patients, which yields the best clinical and biomechanical outcomes. An 18 - year-old male patient with quadriceps re-rupture after a primary repair was managed with allograft reconstruction using suture anchors. At six years of follow-up, the patient gained a full range of motion with excellent clinical outcomes. He returned to his previous work. In conclusion, quadriceps reconstruction using suture anchor and Achilles allograft combination is a feasible technique in neglected cases who present with quadriceps tendon re-rupture after primary surgical repair.

Local tendon transfer for knee extensor mechanism reconstruction after soft tissue sarcoma resection

2015 ◽  
Vol 68 (5) ◽  
pp. 729-735 ◽  
Author(s):  
Sebastian Fischer ◽  
Silke Soimaru ◽  
Tobias Hirsch ◽  
Maximilian Kueckelhaus ◽  
Christoph Seitz ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Sarcoma ◽  
Tendon Transfer ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Knee Extensor Mechanism

scholarly journals SIMULTANEOUS BILATERAL TEAR OF THE KNEE EXTENSOR MECHANISM IN A PRE-ADOLESCENT: CASE REPORT

2012 ◽  
Vol 47 (5) ◽  
pp. 659-661
Author(s):  
Rodrigo Pires Albuquerque ◽  
Vincenzo Giordano ◽  
Maria Isabel Pires Albuquerque ◽  
Antonio Carlos Pires Carvalho ◽  
Ney Pecegueiro do Amaral ◽  
...  
Keyword(s):  
Case Report ◽  
Knee Extensor ◽  
Extensor Mechanism ◽  
Knee Extensor Mechanism
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