Revision rates are similar after surgical treatment of acute chondral and osteochondral injuries following patellar dislocation: A multicentre cohort study
Year: 2026
Type: article
Study design: Observational Study
Abstract: PURPOSE: Optimal treatment strategies for (osteo-)chondral injuries following patellar dislocation remain unclear. This retrospective multicentre study aimed to compare outcomes between chondral and osteochondral lesions and to explore factors associated with revision surgery. METHODS: Patients who underwent surgical treatment for (osteo-)chondral injuries secondary to patellar dislocation over a 10-year period were included. The primary endpoint was revision surgery; secondary endpoints included patient-reported outcome measures (PROMs) (Banff Patellofemoral Instability Instrument 2.0, EuroQol 5-Dimension [EQ-5D], International Knee Documentation Committee [IKDC-2000] and Marx Activity Rating Scale). Outcomes were compared between chondral and osteochondral lesions using multivariable regression models to adjust for clinically relevant confounders. RESULTS: A total of 208 patients with chondral and/or osteochondral defects were included (chondral: 27.4%; osteochondral: 71.2%; combined chondral and osteochondral: 1.4%). Only patients with purely chondral or osteochondral lesions were further analysed (n = 205). Treatment strategies differed between groups, with fragment refixation more commonly performed in osteochondral lesions (62.8% vs. 19.3%, p < 0.001). Overall, 11.2% of patients underwent revision surgery, with no significant difference between lesion types. Concomitant stabilising procedures were associated with lower odds of revision surgery (adj. p = 0.005). Patients with chondral lesions had higher scores in the Marx Activity Rating Scale (adj. p = 0.017). CONCLUSIONS: No significant difference in revision rates was observed between chondral and osteochondral lesions following patellar dislocation. Concomitant stabilising procedures were associated with lower odds of revision surgery. Given the retrospective design and limited number of events, these findings should be considered exploratory and require confirmation in prospective studies. LEVEL OF EVIDENCE: Level III.
DOI: 10.1002/ksa.70546
Authors: Andrea Maria Hediger, Thomas Lustenberger, Emanuel Francis Liechti, Pierre Hepp, Marie Samland, Ralf Henkelmann, Thomas Armin Schildhauer, Matthias Königshausen, Thomas Rosteius, Till Orla Klatte, Hendrik Fahlbusch, Johannes Zellner, Thomas Habereder, Christoph Kittl, Marion Laumann, Elmar Herbst, Thorben Briese, Tobias Johannes Gensior, Robert Roenick, Bastian Mester, Richard Glaab
Institutions: University of Bern, University Hospital of Bern, Kantonsspital Winterthur, University Hospital Leipzig, BG University Hospital Bergmannsheil Bochum, University Medical Center Hamburg-Eppendorf, Albertinen Diakoniewerk, Caritas-Krankenhaus St. Josef, Asklepios Orthopädische Klinik Lindenlohe, University Hospital Münster, Gelenkpunkt, BG Klinikum Duisburg, Essen University Hospital
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,300
OpenAlex ID: W7171562152