ArticleJournal of clinical orthopaedics and trauma2025
Does patellar height influence functional outcomes after reconstruction in distal femur tumours?
Article in Journal of clinical orthopaedics and trauma, 2025. 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
Background: Patellar height plays a critical role in maintaining knee biomechanics and extensor mechanism efficiency. While its significance after total knee arthroplasty is well documented, its impact following distal femoral endoprosthetic reconstruction remains underexplored. The objective of this study was to evaluate the relationship between patellar height and functional outcomes using the Musculoskeletal Tumour Society-93 (MSTS) score and to assess the influence of patellar height on extensor lag and knee range-of-motion (ROM). Methods: This retrospective single-centre study included 61 patients who underwent intra-articular resection and endoprosthetic reconstruction for primary malignant and benign aggressive distal femur tumours between January 2018 and December 2023. Patellar height was measured using the modified Caton-Deschamps (mCD) index and categorized into baja, norma and alta. Clinical assessment included measurement of extensor lag, knee ROM and MSTS-93 scores. To evaluate intergroup differences and correlations, statistical analysis was performed. Results: Mean age was 27.52 ± 13.27years, including 36 males(59 %) and 25 females(41 %). Median follow-up was 13months(IQR6.5-32.5). Mean femoral resection length was 15.43 ± 3.23 cm and mean tumour volume resected was 450.48 ± 288.63 cm Conclusion: Although not statistically significant, patients with patella norma and alta demonstrated better functional outcomes. While no definitive correlation was established, the findings suggest that patellar height may influence functional recovery after distal femoral endoprosthesis reconstruction, and larger prospective studies are needed to validate these findings.
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