ArticleInternational orthopaedics2021
Clinical outcomes after medial patellofemoral ligament reconstruction: an analysis of changes in the patellofemoral joint alignment.
Article in International orthopaedics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 4 of them syntheses that pooled it.
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10 citing papers in PubMed, 4 syntheses or guidelines pooled it, 12 citations in OpenAlex.
- The incidence and epidemiology of patellar fractures following medial patellofemoral ligament reconstruction: a systematic review and meta-analysis.Archives of orthopaedic and trauma surgery · 2026Pooled it
- Isolated medial patellofemoral ligament reconstruction results in similar postoperative outcomes as medial patellofemoral ligament reconstruction and tibial-tubercle osteotomy: a systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Pooled it
- Protocols of rehabilitation and return to sport, and clinical outcomes after medial patellofemoral ligament reconstruction with and without tibial tuberosity osteotomy: a systematic review.International orthopaedics · 2022Pooled it
- Femoral tunnel malposition is the most common indication for revision medial patellofemoral ligament reconstruction with promising early outcomes following revision reconstruction: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Pooled it
- Comparable clinical and functional outcomes between biological and synthetic grafts for medial patellofemoral ligament reconstruction: A systematic review and meta-analysis.Journal of experimental orthopaedics · 2026Review
- Variable Guidelines for Pediatric Medial Patellofemoral Ligament Reconstruction Rehabilitation Exists Across PRiSM Member Organizations.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2024Review
- Stiffness and Instability After MPFL Reconstruction Using a Fluoroscopic Versus Open Technique to Localize the Femoral Attachment Site: A Systematic Review and Meta-analysis.Orthopaedic journal of sports medicine · 2023Review
- Change of the cross-sectional area of vastus medialis oblique in patients with recurrent patellar dislocation treated by tibial tubercle transfer combined with medial patellofemoral ligament reconstruction on axial CT.Journal of orthopaedic surgery and research · 2022Article
- Patellar instability MRI measurements are associated with knee joint degeneration after reconstruction of the medial patellofemoral ligament.Skeletal radiology · 2022Article
- Analysis of Hemodynamic Changes After Medial Patellofemoral Ligament Reconstruction.Sports medicine international open · 2022Article
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeMedial patellofemoral ligament (MPFL) reconstruction using the hamstring tendon is widely performed to treat recurrent patellar dislocation. MPFL reconstruction includes a post-operative process of necrosis and reperfusion of the hamstring tendon graft. We hypothesise that the patella gradually shifts laterally because of this process, ultimately affecting the patellofemoral joint alignment. This study aimed to analyse the chronological changes in the patellofemoral joint alignment and the outcomes of MPFL reconstruction.
methodsIn this retrospective case-series study, the Knee Society, Lysholm, and Kujala scores were evaluated in 24 consecutive patients (27 knees). To evaluate patellar tracking defects, radiographic indices including the tilting angle, the lateral shift ratio, and the congruence angle were measured before, immediately after, and three, 12, and 36 months after MPFL reconstruction.
resultsPost-operative Kujala, Knee Society, and Lysholm scores for the study population significantly improved relative to the pre-operative scores. The tilting and congruence angles at three months after the operation significantly increased relative to those recorded immediately after the operation. The tilting and congruence angles were not significantly different at three, 12, and 36 months after the operation.
conclusionsThe post-operative outcomes of MPFL reconstruction for recurrent patellar dislocation were favourable. Insufficient union between the bone tunnel and tendon graft, along with an elongation of the necrotic tendon graft, may change the alignment of the patellofemoral joint within three months after the operation. Therefore, we believe it is necessary to refrain from knee rotation that places lateral stress on the patella until three months after the operation.
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