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Gracilis Muscle: Anatomy, Function, Clinical Assessment & Therapy Introduction The gracilis muscle is a long, slender muscle located on the medial side of the thigh. It is part of the adductor group and plays an essential role in hip adduction , knee flexion , and internal rotation of the tibia . Despite being the most superficial muscle in the medial thigh, it serves multiple roles in movement and stability, especially during walking and sports activities. This article explores the anatomy, function, clinical testing, therapeutic exercises, and common conditions associated with the gracilis muscle. Anatomy of the Gracilis Muscle Origin Body and inferior ramus of the pubis (ischiopubic ramus) Insertion Medial surface of the tibia (just below the medial condyle), as part of the pes anserinus , along with the sartorius and semitendinosus muscles. Muscle Group Medial compartment of the thigh (Adductor group) Nerve Supply Anterior branch of the obturator ne...