Tendon Ossifications of Adductor longus and Gluteus Maximus muscles: A case report.

Gluteus maximus is a hip extensor, originating from the posterior surface of ilium and inserting on the gluteal tuberosity and ilio-tibial tract. Adductor longus is a thigh adductor which inserts to the middle- 1/3 of linea aspera. Overuse, repetitive use as well as some pathological conditions may predispose to tendon ossification of these muscles. We present a rare case of co- existing tendon ossifications of gluteus maximus and adductor longus observed as a bony spur (bony piece) attached to the gluteal tuberosity and middle-1/3 of Linea aspera respectively. The bony insertion tendon of gluteus maximus measured 61.77 mm in length, 10.63 mm in maximum breadth and 6.06 mm in height while that of adductor longus measured 29.46 mm in length, 10.13 mm in breadth and 7.86 mm in height. Both bony spurs had short grooves on their posterior surfaces. Ossification of insertion tendon of gluteus maximus may exert pressure effect on left circumflex femoral artery while that of adductor longus may compress on the perforating arteries. Knowledge of these ossified tendons is required to prevent damage to neurovascular structures during orthopaedic procedures, misinterpretation of radiological films and misdiagnosis of malignant lesions.

Key Words: Tendon, Ossification, Adductor Longus, Gluteal Maximus, Muscles