Introduction: Rupture of a Quadriceps Tendon (QT) following a Total Knee Arthroplasty (TKA) is a rare complication. The purpose of this study was to report outcomes and complications of QT repair following TKA. Methods: From a cohort of 437 QT repairs, 19 individuals were identified who had previously undergone a TKA on the ipsilateral leg. Data was collected on individuals with a minimum follow up of 3 months post QT repair (n=16), including Knee Society Scores, pre and post-operative lag, and pre and post-operative range of motion. Results: 13 patients were treated with End-to-End (EE) repairs and 6 were treated with transosseous or suture anchor repair (ATO). In the ATO group, there was no difference in pre (68.0 ± 22.5) and post KSS (82 ± 9.16) (p=0.231), but in the EE group, there was a significant improvement in KSS (pre=67.8 ± 13.1, post=86 ± 16.75, p=0.0027). There was significant difference in post-operative extension lag between ATO (26.0 ± 12.6) vs. EE (4.0 ± 2.74) (p=0.0083). Four out of six ATO patients had extension lag ≥10 degree extensor lag (66.7%) compared to 2 out of 13 (15.4%) patients in the EE group. Compared to EE, ATO repair had an 8.00 times odds of re-tear (95% CI: 0.53,120.6; p=0.133) and 2.75 times greater risk of infection (95% CI: 0.284, 26.61; p=0.382). Conclusion: Patients who underwent EE repair had better functional improvements compared to the ATO group and smaller extension lag.
Background: Patellar tendon rupture following Total Knee Arthroplasty (TKA) is rare. There is no consensus on optimal treatment. Methods: All patients who underwent a primary repair of a traumatic patellar tendon rupture following a TKA between 2008 and 2016, were retrospectively reviewed. Patient information, implant, repair type (anchor vs. bone tunnel), graft use, and complications were recorded. Results: Twenty-six patients met our inclusion criteria. The average age was 69.7+11 years. There were 19 females (73.1%). The average time from TKA to PT rupture was 13.6 months (range: 0- 135 months). The average incidence was 62.32 per 100,000 TKA. PT was repaired with anchors (A) in 9 (4 with a graft) and trans-osseous tunnels (TO) in 12 (5 required graft), and 5 with other methods. There was a significant improvement in KSS from 61 to 83 (P=0.023). There was a significant difference in time from PT tear to surgery in patients with grafts (42 days) and those without grafts (6 days) (P<0.001). Compared to A repair, TO had 2.39 times odds of re-tear (95% CI: 0.38,15.4; P=0.354) and 1.37 times odds of infection (95% CI:0.074,25.6; P=0.83). Repairs with a graft had a 1.90 times odds of re-tear (95% CI: 0.29, 12.19; P=0.49) and 6.3 time odds of infection (95% CI 0.26, 166.7; P=0.25). Conclusion: Surgical repair of PT tears following TKA leads to significant clinical improvement, regardless of the fixation method or graft use. We found no difference in outcomes between A and TO repairs and or with graft use.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.