SynthesisJournal of orthopaedic surgery and research2026
Quadriceps recovery after subvastus total knee arthroplasty in valgus deformity: a systematic review and pooled descriptive analysis.
Synthesis in Journal of orthopaedic surgery and research, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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5 authors.
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Abstract
backgroundThe subvastus approach preserves the extensor mechanism, but its efficacy in total knee arthroplasty (TKA) for valgus deformity remains unclear. This systematic review synthesizes available evidence on quadriceps recovery and clinical outcomes after subvastus TKA specifically in patients with valgus deformity.
methodsA systematic search of PubMed, Cochrane Library, and Embase (2000-2025) was performed. Studies reporting outcomes of the subvastus approach in valgus TKA were included. The primary outcome was time to straight leg raise (SLR). Secondary outcomes included functional scores, range of motion (ROM), pain (VAS), and complications. Due to single-arm designs and high heterogeneity, a formal meta-analysis was not appropriate; results are presented descriptively with pooled means for illustrative purposes only.
resultsThree retrospective studies (286 valgus knees) were included. Time to SLR ranged from 0.92 to 2.0 days across studies (pooled descriptive mean: 1.35 days; I
conclusionThe subvastus approach appears viable for selected valgus knees, associated with rapid quadriceps recovery, functional improvement, and low complications within the available evidence. However, these findings derive from only three retrospective, single-arm studies with substantial heterogeneity. High-quality prospective comparative studies are required.
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