M91.4

Clinical Causes: Legg-Calvé-Perthes disease, which involves disrupted blood flow to the femoral head, leading to deformity and enlargement. Developmental dysplasia of the hip, where the hip joint develops abnormally during fetal development. Previous hip infections or trauma that result in abnormal healing or growth patterns. Idiopathic causes, with no clear underlying reason identified. Genetic factors influencing bone growth and development, which may predispose some individuals to coxa magna.

Key Symptoms: Persistent pain in the groin, thigh, or buttock area. Stiffness or limited range of motion in the affected hip. Visible swelling or enlargement around the hip region. Limping while walking or an abnormal gait. Muscle weakness around the hip. Difficulty performing activities that involve hip movement, such as walking or climbing stairs.

Diagnosis Path: The diagnosis of coxa magna generally involves a combination of physical examinations and imaging studies. Key diagnostic steps include: - Medical history assessment to identify past hip problems or injuries. - Physical examination to evaluate joint range of motion, swelling, deformity, and pain. - Imaging tests such as X-rays to visualize bone structure and confirm hip enlargement or deformity. - Advanced imaging like MRI or CT scans may be used to assess soft tissues and cartilage and to evaluate the extent of joint damage or deformation. - Differential diagnosis to distinguish coxa magna from other hip conditions with similar features.

Treatment Protocols: Management of coxa magna depends on the severity of the condition and the symptoms experienced. Common treatment approaches include: - Conservative therapies such as physical therapy to improve joint function and strengthen surrounding muscles. - Pain management using medications like NSAIDs. - Activity modification to reduce stress on the affected hip. - Use of assistive devices like crutches or walkers to facilitate mobility. - In cases of significant deformity or joint dysfunction, surgical interventions such as osteotomy or hip reconstruction may be necessary. - Regular follow-up to monitor joint health and prevent further deformity or deterioration.