The vastoadductor membrane is a strong aponeurotic sheet stretching from vastus medialis to adductor longus and adductor magnus, forming the roof of the lower adductor (Hunter) canal beneath sartorius. The femoral vessels pass through the canal beneath it and then leave through the adductor hiatus, an opening in adductor magnus, to become the popliteal vessels.
An expanded entry for Vastoadductor Membrane.
| Location | Lower part of the adductor canal on the medial thigh |
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Closes the front of the adductor canal so that the femoral vessels pass through a protected tunnel in the middle of the thigh.
The hiatus marks the femoral-popliteal transition, the site of above-knee popliteal bypass anastomosis. Fibrous bands here produce popliteal artery entrapment in young athletes.
The adductor hiatus marks the transition from femoral to popliteal artery and is the reference for above-knee bypass anastomosis.
Fibrous band at the hiatus compressing the femoral artery producing popliteal entrapment syndrome, managed by band release.
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