ArticleSurgical and radiologic anatomy : SRA2025
Anatomical presentation of the nerve to vastus medialis within the adductor canal and femoral nerve branch insertions into thigh muscles: a cadaveric study.
Article in Surgical and radiologic anatomy : SRA, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07703293 (Chronic Knee Pain Beyond the Genicular Nerves), which is not on this map. Not yet cited in PubMed.
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The trial behind it
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Chronic Knee Pain Beyond the Genicular Nerves: The Role of Distal Sensory Branches of the Nerve to Vastus Medialis
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Authors and funding
5 authors.
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Abstract
purposeThis study aimed to (1) investigate the prevalence of the nerve to vastus medialis within the adductor canal, (2) characterize the anatomical features of the canal, and (3) assess correlations between canal characteristics and anthropometric data. Additionally, the number and motor entry points of femoral nerve branches supplying the anterior thigh muscles were examined.
methodsThirty-two lower limbs (16 fresh-frozen cadavers) were dissected. The adductor canal was identified, and its proximal and distal ends were measured from the anterior superior iliac spine (ASIS). Prevalence of the nerve to vastus medialis within the canal was recorded. Motor entry points of femoral nerve branches were identified and measured along a reference line from the ASIS to the center of the tibiofemoral joint using a measuring tape. Correlations between adductor canal anatomy and height, weight, body mass index, and thigh length were analyzed using Pearson's or Spearman's correlation tests.
resultsThe nerve to vastus medialis was located within the adductor canal in 34.38% of cases. The mean canal length was 7.20 ± 2.86 cm, corresponding to 55-71% of the ASIS-to-knee distance. Distances to the canal's proximal and distal ends correlated significantly with height and thigh length (r = 0.421-0.653, p < 0.05). Femoral nerve branches to each anterior thigh muscles ranged from one to five.
conclusionAnatomical variation in the nerve to vastus medialis may influence outcomes of adductor canal procedures. Knowledge of canal location and motor entry points may assist clinicians in performing adductor canal blocks or surgical interventions.
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