A 77-year-old man presents with a 3-month history of progres…
A 77-year-old man presents with a 3-month history of progressively worsening right hip pain that now intermittently radiates into the lateral thigh and down to the foot. The patient’s referral is for right hip pain, with radiographs showing no fracture but moderate joint space narrowing. He reports the pain began as a deep ache in the hip but has recently been accompanied by intermittent numbness along the dorsum of the foot. He also feels weaker when stepping up onto curbs. Although he remains active with woodworking and gardening, he has begun avoiding lifting and prolonged walking due to his symptoms. On examination, his low back pain is reproduced with lumbar active range of motion. Right foot tingling increases with repeated lumbar extension and is relieved with lumbar flexion. He has a positive slump bilaterally, with decreased motion on the right compared to the left. He also reports concordant right hip pain during passive hip flexion, internal rotation, and external rotation. You defer the FADIR test because its component motions are already provoked. Knee active range of motion with overpressure is full and pain-free. Which region should be further investigated during your tests and measures to help clarify the diagnosis and guide your interventions?