ArticleJournal of experimental orthopaedics2026
Quadriceps tendon autograft with patellar bone block and semitendinosus augmentation demonstrates predictable midterm outcomes for patellar tendon disruption following primary total knee arthroplasty.
Article in Journal of experimental orthopaedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: Patellar tendon (PT) disruption following primary total knee arthroplasty (TKA) is an uncommon but devastating complication, with current available surgical options reporting fair to poor long-term results. We report our experience using the quadriceps tendon autograft with patellar bone block and semitendinosus augmentation (QTPBSTA) as an alternate graft option, at a mean follow-up of 6.9 ± 3.6 years. Methods: This retrospective study cohort included 29 patients with isolated PT ruptures following primary TKA with unresurfaced patellae, between January 2010 and December 2023, treated using the QTPBSTA technique. The diagnosis was confirmed using ultrasonography in 21 patients and magnetic resonance imaging in 8 patients. All the patients were retrospectively evaluated for outcomes at a midterm follow-up. Data collection included pre- and post-operative extensor lag, Oxford Knee Score (OKS), Knee Society Score (KSS), pre- and post-operative ambulatory status and post-operative complications. All evaluations were done by an independent physiotherapist. Results: Patients treated with this technique achieved reproducible and predictable midterm outcomes with no reported failures and minimal donor site morbidity at a mean follow-up of 6.9 Conclusion: QTPBSTA is a viable alternative for reconstruction of the ruptured PT following primary TKA. Midterm follow-up at 6.9 ± 3.6 years demonstrated good outcomes, and it may be considered as a reliable option in PT disruption following TKA. The biggest strength of this technique has been a significant reduction in extensor lag. Level of Evidence: Level IV.
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