- May 6, 2026The hamstrings (biceps femoris long head, semimembranosus, and semitendinosus) are the primary knee flexors and important hip extensors. They work…
- May 6, 2026The vastus intermedius is the deepest quadriceps component, lying directly on the anterior femur. It is the component responsible for…
- May 6, 2026The vastus medialis extends distally as the VMO (vastus medialis oblique) which has distinct fibres angled 50-55 degrees to the…
- May 6, 2026The pectineus is the most anterior hip adductor and is uniquely flat rather than fusiform. Its dual innervation from both…
- May 6, 2026The rectus femoris is unique among the quadriceps in crossing both the hip and knee joints. Its dual origin (AIIS…
- May 6, 2026The semimembranosus has five distinct insertional expansions, including the oblique popliteal ligament which reinforces the posterior knee capsule. Its broad…
- May 6, 2026The semitendinosus has an exceptionally long thin tendon (relative to its belly) making it ideal for tendon graft harvest. It…
- May 6, 2026The biceps femoris has two distinct heads with different nerve supplies (tibial vs common peroneal), making it a key muscle…
- May 6, 2026Adductor minimus is the uppermost portion of adductor magnus, sometimes described as a separate muscle when its pubic origin is…
- May 6, 2026The VLO is the distal oblique fibre bundle of VL, angled 40-50 degrees relative to the femoral shaft. It acts…