scholarly journals TKR after posttraumatic and primary knee osteoarthritis: a comparative study

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Ong-art Phruetthiphat ◽  
Biagio Zampogna ◽  
Sebastiano Vasta ◽  
Benyapa Tassanawipas ◽  
Yubo Gao ◽  
...  
Keyword(s):  
Mechanical Axis ◽  
Level Of Evidence ◽  
Knee Oa ◽  
Outlier Group ◽  
Significant Difference ◽  
Axis Alignment ◽  
Lower Pain ◽  
Comorbidity Index ◽  
Total Knee

Abstract Background A few literatures reported that the outcomes of total knee replacement (TKR) in posttraumatic osteoarthritis (PTOA) were lower compared to TKR in primary osteoarthritis (primary OA). The study’s purpose was to compare the comorbidity and outcome of TKR among fracture PTOA, ligamentous PTOA, and primary OA. The secondary aim was to identify the effect of postoperatively lower limb mechanical axis on an 8-year survivorship after TKR between PTOA and primary OA. Methods Seven hundred sixteen patients with primary OA, 32 patients with PTOA (knee fracture subgroup), and 104 PTOA (knee ligamentous injury subgroup) were recruited. Demography, comorbidities, Charlson Comorbidity Index (CCI), operative parameters, mechanical axis, functional outcome assessed by WOMAC, and complications were compared among the three groups. Results PTOA group was significantly younger (p<0.0001) with a higher proportion of men (p=0.001) while the primary OA group had higher comorbidities than the PTOA group, including anticoagulant usage (p=0.0002), ASA class ≥3 (p<0.0001), number of diseases ≥ 4 (p<0.0001), and CCI (p<0.0001). Both the fracture PTOA group (p<0.0001) and ligamentous PTOA group (p = 0.009) had a significantly longer operative time than the primary OA group. The fracture PTOA group had significantly lower pain components and stiffness components than the primary OA group. There was no significant difference in the rate of an aligned group, outlier group, and an 8-year survivorship in both groups. Conclusion The outcome following TKR in the fracture PTOA was poorer compared to primary knee OA in the midterm follow-up. However, no difference was detected between the ligamentous PTOA and primary knee OA. The mechanical axis alignment within the neutral axis did not affect the 8-year survivorship after TKR in both groups. Level of evidence Level III; retrospective cohort study

scholarly journals Effect of Coronal Alignment on 10-Year Survivorship of a Single Contemporary Total Knee Arthroplasty

2021 ◽  
Vol 10 (1) ◽  
pp. 142
Author(s):  
Meagan E. Tibbo ◽  
Afton K. Limberg ◽  
Kevin I. Perry ◽  
Mark W. Pagnano ◽  
Michael J. Stuart ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Coronal Alignment ◽  
Radiographic Evidence ◽  
Outlier Group ◽  
Axis Alignment ◽  
Total Knee

Debate remains regarding the utility of mechanical axis alignment as a predictor of durability after total knee arthroplasty (TKA). Our study aimed to assess the effects of coronal alignment on implant durability, clinical outcomes, and radiographic results with a single fixed-bearing TKA design. All patients undergoing primary cemented TKA of a single design (Stryker Triathlon) from 2005–2007 with >10 years of follow-up and available pre-operative and post-operative hip–knee–ankle radiographs were included (n = 89). Radiographs were measured to determine coronal alignment and assessed for loosening. Mean preoperative mechanical axis alignment was −6° ± 6.7° (varus, range, −16°–23°), while mean post-operative alignment was −1° ± 2.7° (varus, range, −3°–15°). The aligned group was defined as knees with a post-operative mechanical axis of 0° ± 3° (n = 73) and the outlier group as those outside this range (n = 16). No patients underwent revision. Ten-year survivorship free from any reoperation was 99% and 100% in the aligned and outlier groups, respectively (p = 0.64). Knee Society scores improved significantly in both groups (p < 0.001) and did not differ at final follow-up (p = 0.15). No knees demonstrated radiographic evidence of loosening. Post-operative mechanical axis alignment within 3° of neutral was not associated with improved implant durability, clinical outcomes, or radiographic results at 10 years following primary TKA.

Total Knee Arthroplasty Is Safe in Jehovah's Witness Patients—A 12-Year Perspective

2019 ◽  
Vol 33 (01) ◽  
pp. 034-041 ◽  
Author(s):  
Theodore S. Wolfson ◽  
David Novikov ◽  
Kevin K. Chen ◽  
Kelvin Y. Kim ◽  
Afshin A. Anoushiravani ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Postoperative Complications ◽  
Knee Arthroplasty ◽  
Subgroup Analysis ◽  
Blood Management ◽  
Folate Supplementation ◽  
Level Of Evidence ◽  
Significant Difference ◽  
Total Knee

AbstractDespite the evolution of blood management protocols, total knee arthroplasty (TKA) occasionally requires allogeneic blood transfusion. This poses a particular challenge for Jehovah's Witnesses (JW) who believe that the Bible strictly prohibits the use of blood products. The aim of this study was to compare JW and a matched-control cohort of non-JW candidates undergoing TKA to assess the safety using modern blood management protocols. Fifty-five JW patients (63 knees) who underwent TKA at our institution between 2005 and 2017 were matched to 63 non-JW patients (63 knees). Patient demographics, intraoperative details, and postoperative complications including in-hospital complications, revisions, and 90-day readmissions were collected and compared between the groups. Additionally, subgroup analysis was performed comparing JW patients who were administered tranexamic acid (TXA) between the two groups. Baseline demographics did not vary significantly between the study cohorts. The mean follow-up was 3.1 years in both the JW and non-JW cohorts. Postoperative complications, including in-hospital complications (7.9 vs. 4.8%; p = 0.47), revision TKA (1.6 vs. 1.6%; p = 1.00), and 90-day readmission (1.6 vs. 4.8%; p = 0.31) were not significantly different between the JW and non-JW groups. Subgroup analysis demonstrated JW patients who received TXA had a significantly lower decline in postoperative hemoglobin (Hgb) (8.6 vs. 14.0%; p < 0.01). At a follow-up of up to 12 years, JW patients who underwent TKA have outcomes equivalent to non-JW patients without the need for transfusion. Our findings support that surgeons are more likely to optimize JW patients preoperatively with iron and folate supplementation. Despite these variations in preoperative optimization efforts, no significant difference with regard to Hgb or hematocrit levels was demonstrated. Level of evidence is III, retrospective observational study.

scholarly journals Evaluation of Accuracy of Preoperative Planning of the Femurofibular Angle in Open-Wedge High Tibial Osteotomy for Mild Medial Knee Osteoarthritis

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Peizhao Wang ◽  
Xiao Wang ◽  
Xiaotao Shi ◽  
Honglue Tan
Keyword(s):  
Lower Limb ◽  
Preoperative Planning ◽  
Mechanical Axis ◽  
Weight Bearing ◽  
Tibial Osteotomy ◽  
Medial Knee ◽  
Knee Oa ◽  
Significant Difference ◽  
Wedge High Tibial Osteotomy

Objective. The purpose of this study was to evaluate the usefulness of preoperative planning of the femurofibular angle (FFA) in medial open-wedge high tibial osteotomy (OWHTO) for mild medial knee osteoarthritis. Methods. Thirty-two patients (32 knees) with mild medial knee OA were retrospectively reviewed. The patients underwent preoperative planning of the FFA for OWHTO. For preoperative planning, a full-length weight-bearing X-ray photograph of the lower limb was opened within Adobe Photoshop Software, and a targeted corrective mechanical axis line of the lower limb and its intersecting point at the lateral tibial plateau surface was drawn using rectangle selection and filling tools. A frame, which encircled the tibia and fibula, was created around the predicted osteotomy plane and then rotated until the ankle center was on the targeted mechanical axis line. Subsequently, a distal femoral condyle line and a proximal fibula axis line were drawn, and the angle between the two lines was measured and defined as the femurofibular angle (FFA). During biplane OWHTO, the preoperatively determined FFA was used to complete the correction of the mechanical axis. During follow-up, the postoperative mechanical weight-bearing line (WBL) of the lower limb, the mechanical femorotibial angle (mFTA), and the FFA were measured and compared with the preoperatively determined values. Results. The mechanical WBL shifted from a preoperative value of 25.36 ± 5.02 % to a postoperative value of 56.19 ± 0.10 % from the medial border along the mediolateral width of the tibial plateau, and it was 56.57 ± 0.08 % at the final follow-up ( P < 0.01 ). The preoperatively determined value was 56.25%, and no significant difference was found compared with postoperative week-one and final follow-up values ( P > 0.05 ). The mFTA was corrected from a preoperative varus of 4.02 ± 0.63 ° to a postoperative week-one valgus of 2.37 ± 0.28 ° , and it had a valgus of 2.48 ± 0.39 ° at the final follow-up ( P < 0.01 ). No significant difference in the valgus was found compared with the postoperative week-one, final follow-up and preoperatively determined valgus of 2.34 ± 0.26 ° ( P > 0.05 ). The postoperative week-one and final follow-up FFAs were 90.34 ± 1.53 ° and 90.33 ± 1.52 ° , respectively, and no significant difference was found compared with the preoperatively determined value of 90.12 ± 1.72 ° and the intraoperative setting value of 90.25 ± 1.67 ° ( P > 0.05 ). All corrected values were within the acceptable range of preoperative planning. Conclusion. Preoperative planning of the FFA may be useful in OWHTO for patients with mild medial knee OA. Satisfactory correction of the postoperative targeted mechanical axis line of the lower limb can be obtained.

scholarly journals Reoperations are few and confined to the most valgus phenotypes 4 years after unrestricted calipered kinematically aligned TKA

2021 ◽  
Author(s):  
Stephen M. Howell ◽  
Manpreet Gill ◽  
Trevor J. Shelton ◽  
Alexander J. Nedopil
Keyword(s):  
Mechanical Axis ◽  
Oxford Knee Score ◽  
Patellofemoral Instability ◽  
Level Of Evidence ◽  
Primary Tkas ◽  
Wide Range ◽  
Total Knee ◽  
Alignment Angle ◽  
Component Loosening

Abstract Purpose The present study determined the postoperative phenotypes after unrestricted calipered kinematically aligned (KA) total knee arthroplasty (TKA), whether any phenotypes were associated with reoperation, implant revision, and lower outcome scores at 4 years, and whether the proportion of TKAs within each phenotype was comparable to those of the nonarthritic contralateral limb. Methods From 1117 consecutive primary TKAs treated by one surgeon with unrestricted calipered KA, an observer identified all patients (N = 198) that otherwise had normal paired femora and tibiae on a long-leg CT scanogram. In both legs, the distal femur–mechanical axis angle (FMA), proximal tibia–mechanical axis angle (TMA), and the hip–knee–ankle angle (HKA) were measured. Each alignment angle was assigned to one of Hirschmann’s five FMA, five TMA, and seven HKA phenotype categories. Results Three TKAs (1.5%) underwent reoperation for anterior knee pain or patellofemoral instability in the subgroup of patients with the more valgus phenotypes. There were no implant revisions for component loosening, wear, or tibiofemoral instability. The median Forgotten Joint Score (FJS) was similar between phenotypes. The median Oxford Knee Score (OKS) was similar between the TMA and HKA phenotypes and greatest in the most varus FMA phenotype. The phenotype proportions after calipered KA TKA were comparable to the contralateral leg. Conclusion Unrestricted calipered KA’s restoration of the wide range of phenotypes did not result in implant revision or poor FJS and OKS scores at a mean follow-up of 4 years. The few reoperated patients had a more valgus setting of the prosthetic trochlea than recommended for mechanical alignment. Designing a femoral component specifically for KA that restores patellofemoral kinematics with all phenotypes, especially the more valgus ones, is a strategy for reducing reoperation risk. Level of evidence Therapeutic, Level III

Does Kinematic Alignment Improve Short-Term Functional Outcomes after Total Knee Arthroplasty Compared with Mechanical Alignment? A Systematic Review and Meta-analysis

2017 ◽  
Vol 31 (01) ◽  
pp. 078-086 ◽  
Author(s):  
Yanhong Li ◽  
Yuliang Wang ◽  
Mingxuan Yang ◽  
Shuanke Wang
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Functional Outcomes ◽  
Mechanical Axis ◽  
Meta Analysis ◽  
Mechanical Alignment ◽  
Short Term ◽  
Significant Difference ◽  
Total Knee

AbstractThis meta-analysis was conducted to study whether kinematically aligned total knee arthroplasty (TKA) improves short-term functional outcomes compared with mechanical alignment without changing the hip–knee–ankle angle. Prospective cohort studies were searched from electronic literature databases, including PubMed, Web of Science, Embase (Ovid interface), and Cochrane Library (Ovid interface). Total 1,159 records were identified. Six trials involving 561 patients were eligible for data extraction and meta-analysis. The included studies recorded outcomes in the follow-up range from 6 to 34 months. Primary outcomes were to assess the functional outcomes in follow-up, and KA group achieved better performance on WOMAC score (mean difference [MD] = −18.82, 95% CI: −16.06 to −5.58), knee function score (MD = 7.23, 95% CI: 0.52–13.94), Oxford knee score (MD = 4.76, 95% CI: 0.40–9.12), and knee range of flexion (MD = 4.48, 95% CI: 2.09–6.86), whereas other parameters including Knee Society score, knee range of extension, VAS pain score, and the occurrence of the complications were without significant difference (p > 0.05). Second outcomes evaluated the perioperative clinic indexes. Our meta-analysis showed that KA group had a shorter time of operation (MD = −15.44, 95% CI: −27.47 to −3.71) and a longer walk distance before discharge (MD = 53.24, 95% CI: 21.32–85.15) when compared with the MA group, whereas the change in hemoglobin, incision length, knee range of flexion before discharge, and length of stays were without significant difference (p > 0.05). Third outcomes were used to analyze the alignment data. Our study showed that KA had larger angles of femoral component and mechanical axis of the femur (MD = −1.95,95% CI: −2.77 to −1.13), tibial component and mechanical axis of tibia (MD = 2.06, 95% CI: 1.43–2.70), anatomic knee angle (MD = −0.72, 95% CI: −1.33 to −0.11), and operative limb alignment (MD = −1.97, 95% CI: −2.50 to −1.45,) compared with the MA group, but the hip–knee–ankle angles between the two groups were similar. KA provided better functional outcomes and better flexion following short-term follow-up of TKA. However, longer-term follow-up and larger sample studies are needed to put into research in the future.

scholarly journals The effect of postoperative mechanical axis alignment on the revision rate of primary total knee arthroplasty after a follow up of 10 years

10.29007/3c7w ◽  
2018 ◽  
Author(s):  
Eun-Kyoo Song ◽  
Jongkeun Seon ◽  
Dong-Hyun Lee ◽  
Je-Hyoung Yeo
Keyword(s):  
Total Knee Arthroplasty ◽  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Revision Rate ◽  
Primary Total Knee Arthroplasty ◽  
Outlier Group ◽  
Primary Tkas ◽  
Total Knee

The purpose of this study is to evaluate the effect of postoperative mechanical alignment on clinical outcomes and revision rate by comparing acceptable mechanical axis group from neutral and an outlier mechanical axis.Between 2000 and 2006, clinical and radiographic data of 334 primary TKAs were retrospectively reviewed. Post-operative mechanical axis was investigated within 1 month after TKA. The first group was an acceptable group of 286 knees (85.6%, with mechanical axis of 0°±3°). The second group was an outlier group of 48 knees (14.4%, with mechanical axis of beyond 0°±3°). Clinical outcomes before surgery and at the final follow up were analyzed using scoring method such as Hospital for Special Surgery, Knee Society Score, and Western Ontario &amp; McMaster Universities Osteoarthritis Index (WOMAC) score. Radiologic outcomes including changes of mechanical axis between immediate postop and last follow-up were evaluated. Postoperative complications and revision rates were also evaluated.The mean degrees in change of mechanical axis between immediate postop and last follow-up were greater in the outlier group (1.6°±2.7) than acceptable group (0.8°±2.4). No significance difference in clinical outcome was found between the two groups. The incidence of aseptic loosening, instability, polyethylene wear, polyethylene breakage, and periprosthetic fracture was 2/4/2/2/2 each in the acceptable group and 1/1/2/0/0 each in the outlier group. Six (2.1%) of 286 in the acceptable group and 4 (8.3%) of 48 in the outlier group were revised (p=0.04). The Kaplan-Meier survival analysis showed a tendency towards improved survival with restoration of neutral mechanical axis. However, such improvement was not statistically significant (p=0.25).Restoration of neutral limb alignment is a factor of total knee arthroplasty that can result in less revision rate and higher longevity. However, there are no significant differences in clinical outcomes between the two groups.

A Prospective Comparison of 3 Hamstring ACL Fixation Devices - Rigidfix, BioScrew and Intrafix - Randomized Into 4 Groups with a Minimum Follow-Up of 5 Years.

2021 ◽  
Author(s):  
Leena Metso ◽  
Ville Bister ◽  
Arsi Harilainen ◽  
Jerker Sandelin
Keyword(s):  
Cruciate Ligament ◽  
Interference Screw ◽  
Controlled Clinical Trial ◽  
Level Of Evidence ◽  
Tibial Fixation ◽  
Fixation Group ◽  
Prospective Comparison ◽  
Group I ◽  
Significant Difference

Abstract Background: This is a five years follow-up report of some of the new devices for graft fixation. A two years follow-up data was published previously. As there were no statistically or clinically relevant differences in the results two years postoperatively, we hypothesize that after five years of follow-up there is no difference in the outcome after either cross-pin or absorbable interference screw fixation in ACL (anterior cruciate ligament) reconstruction with hamstring tendon autografts.Methods: 120 patients were randomized into four different groups (30 each) for ACL reconstruction with hamstring tendons: group I femoral Rigidfix cross-pin and Intrafix tibial extension sheath with a tapered expansion screw; group II Rigidfix femoral and BioScrew interference screw tibial fixation; group III BioScrew femoral and Intrafix tibial fixation; group IV BioScrew fixation into both tunnels. The evaluation methods were clinical examination, knee scores, and instrumented laxity measurements. Results: In this 5 years follow-up there were 102/120 (85%) patients available, but only 77 (64,2%) attended the clinical examinations. No significant difference between the groups in the clinical results was detected. There was a significant difference in additional procedures between the 2 and 5 years follow-up, group I had six additional procedures between the 2 and 5 years follow-up (P=.041). Conclusion: There was a statistically significant difference in the additional procedures, most in group I (six). None of these procedures found problems with the ACL graft. Other statistically or clinically significant differences in the 5 years follow-up results were not found. Study design: Randomized controlled clinical trial; Level of evidence, 1.Trial registration: ISRCTN registry with study ID ISRCTN34011837. Retrospectively registered 17.4.2020.

scholarly journals Direct Comparison of Modified Jobe and Docking Ulnar Collateral Ligament Reconstruction at Midterm Follow-up

2018 ◽  
Vol 47 (1) ◽  
pp. 144-150 ◽  
Author(s):  
Justin W. Arner ◽  
Edward S. Chang ◽  
Stephen Bayer ◽  
James P. Bradley
Keyword(s):  
Reconstructive Surgical Procedures ◽  
Ulnar Collateral Ligament ◽  
Return To Play ◽  
Shoulder Injuries ◽  
Collateral Ligament ◽  
Level Of Evidence ◽  
Overhead Athletes ◽  
Additional Surgery ◽  
Significant Difference

Background: The modified Jobe and docking techniques are the 2 most commonly employed techniques for ulnar collateral ligament (UCL) reconstruction among overhead athletes. However, no study has directly compared these techniques performed by a single surgeon. Current comparisons of these techniques have relied solely on systematic reviews and biomechanical studies. Hypothesis: There will be no difference in outcomes or return to play between the modified Jobe and docking techniques in elbow UCL reconstruction surgery. Study Design: Cohort study; Level of evidence, 3. Methods: Twenty-five modified Jobe and 26 docking UCL-reconstructive surgical procedures were performed by a single surgeon, each with a minimum 2-year follow-up. Kerlan-Jobe Orthopaedic Clinic (KJOC) score, Conway Scale, years played, sex, handedness, sport, position, palmaris versus gracilis graft type, concomitant or future arm/shoulder injuries, and need for additional surgery were compared between the groups. Patients who underwent future shoulder or elbow surgery, no matter the cause, were included. Results: No difference was seen between the modified Jobe and docking reconstruction cases in regard to KJOC scores (mean ± SD: 78.4 ± 19.5 vs 72.0 ± 26.0, P = .44), Conway Scale (return to play, any level: 84% vs 82%, P = .61), years played (14.7 ± 6.2 vs 15.2 ± 5.8, P = .52), sex ( P = .67), handedness ( P ≥ .999), sport ( P = .44), position ( P = .60), level of competition ( P = .59), and future surgery (12% vs 4%, P = .35). Palmaris graft type had significantly higher KJOC scores than hamstring grafts (82.3 ± 20.0 vs 57.9 ± 21.2, P = .001). The mean follow-up was 6.1 years in the modified Jobe group and 7.3 years in the docking group (mean = 6.7, P = .47). Conclusion: The modified Jobe and docking techniques are both suitable surgical options for elbow UCL reconstruction. There was no statistically significant difference between the techniques in regard to return to play, KJOC score, or need for subsequent surgery at 6.7-year follow-up. This is the first direct clinical comparison of these 2 techniques by a single surgeon at midterm follow-up.

DOES NAVIGATION TOTAL KNEE REPLACEMENT REALLY MAKE A DIFFERENCE?

2013 ◽  
Vol 16 (02) ◽  
pp. 1350007
Author(s):  
P. Motwani ◽  
A. Jariwala ◽  
N. Valentine
Keyword(s):  
Total Knee Replacement ◽  
Tibial Component ◽  
Sagittal Plane ◽  
Computer Navigation ◽  
Component Alignment ◽  
Tibial Component Alignment ◽  
Significant Difference ◽  
Total Knee ◽  
The Mean

Background: Computer Navigation in Total Knee Replacement (TKR) has completed more than a decade since its inception. From that time, numerous studies have been done to see its effect on the variables of surgery and its outcome. Some studies have shown that it is definitely beneficial while others have negated its superiority over conventional techniques. This is an early outcome study on the results of navigation TKR in terms of alignment and clinical outcome at three years post-operatively. Methods: In the present study, 128 patients who had undergone navigation TKR (128 TKR) between January 2006 and November 2009 were included. The navigation system used was orthoPilot®. Patients were assessed post-operatively at one and three year using knee society score (KSS) and knee function score (KFS). All patients completed one year follow-up and 55 patients completed three year follow-up. From 128 patients, 40 navigated TKR patients operated between November 2007 and 2009 and were compared with 40 patients operated by conventional TKR operated between July 2007 and December 2008. Results: The mean KSS at 1 year post-operatively was 85.60 and at 3 years was 85.87. The mean KFS at 1 year post-operatively was 69.30 and at 3 years was 68.00. There was no statistically significant difference between navigation TKR and conventional TKR in terms of anatomical femoro-tibial alignment, femoral component alignment in coronal and sagittal plane and tibial component alignment in coronal plane. However, there was statistically significant difference between tibial component alignment in sagittal plane (p = 0.000) between both the groups. Conclusion: Computer navigation TKR affords a possibility to place both the femoral and tibial component very precisely without the risk of any greater axis deviation from ideal value. It helps in reducing the outliers in alignment of the limb and that of component and that improves the overall implant survival for a long time post-operatively.

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