A 9 year old girl presented with abnormal gait and right sided hip pain.X ray shows the following features.What can be the most possible diagnosis?
A. Coxa Valga
B. Coxa Vara
D. Congenital Dislocation of Hip
Ans:B. Coxa Vara.
Image shows:Pelvis x-ray demonstrating a right hip deformity characterised by a reduced angle between the head and neck of the femur. Right angle= ~99 degrees; Left angle= ~125 degrees.
- Coxa vara describes a deformity of the hip where the angle formed between the head and neck of the femur and its shaft (Mikulicz angle) is decreased, usually defined as less than 120 degrees.
- It can be congenital or acquired. The common mechansim in congenital cases is a failure of medial growth of the physeal plate.
INFANTILE COXA VARA
- This is coxa vara resulting from some unknown growth anomaly at the upper femoral epiphysis.
- It is noticed as a painless limp in a child who has just started walking. In severe cases, shortening of the leg may be obvious.
- On examination, abduction and internal rotation of the hip are limited and the leg is short.
- Treatment is by a subtrochanteric corrective osteotomy.