Differential Diagnosis
- Single most likely diagnosis
- Femoroacetabular Impingement (FAI): The patient's symptoms, including limited range of motion, pain at end range, and positive FADIR impingement test, are consistent with FAI. The antalgic gait and tenderness over the greater trochanter and anterior hip joint line also support this diagnosis.
- Other Likely diagnoses
- Greater Trochanteric Bursitis: The patient's tenderness over the left greater trochanter and mild tenderness over the right greater trochanter suggest bursitis, which can coexist with FAI.
- Hip Labral Tear: The patient's limited range of motion, pain at end range, and positive FADIR impingement test could also be indicative of a hip labral tear.
- Osteoarthritis: Although the patient's age is not specified, the limited range of motion and pain at end range could be early signs of osteoarthritis.
- Do Not Miss diagnoses
- Avascular Necrosis (AVN) of the Femoral Head: Although less likely, AVN is a serious condition that can present with hip pain and limited range of motion. It is essential to consider this diagnosis to avoid missing a potentially devastating condition.
- Septic Arthritis: Although the patient does not have visible swelling, erythema, or deformity, septic arthritis is a medical emergency that requires prompt diagnosis and treatment.
- Stress Fracture: A stress fracture of the femoral neck or pelvis could present with hip pain and limited range of motion, and is a condition that should not be missed.
- Rare diagnoses
- Synovial Chondromatosis: A rare condition characterized by cartilaginous nodules in the synovial membrane, which can cause hip pain and limited range of motion.
- Pigmented Villonodular Synovitis (PVNS): A rare condition characterized by inflammation of the synovial membrane, which can cause hip pain and limited range of motion.
- Hip Infection (e.g., Tuberculosis or Fungal Infection): Although rare, hip infections can present with hip pain and limited range of motion, and require prompt diagnosis and treatment.