Laboratory Studies
- Generally, laboratory studies are unnecessary.
Imaging Studies
If significant trauma is present, obtain radiographs of the hip and femur to assess for possible fracture(s).
If metastatic cancer is suspected (even in the setting of normal femur radiographic findings), a bone scan can be used to assess for lesions in the proximal femur.
MRI and ultrasonography (US) can potentially be used to differentiate between gluteus medius tendinitis and trochanteric bursitis (greater trochanteric pain syndrome, GTPS) in patients with GTPS.[7]
A study performed by Blankenbaker et al reported all patients with trochanteric bursitis (greater trochanteric pain syndrome, GTPS) demonstrate peritrochanteric T2 abnormalities and have a higher incidence of abductor tendinopathy on MRI. However, MRI is a poor predictor of trochanteric bursitis (greater trochanteric pain syndrome, GTPS), because such findings are not specific for this pathology.[8]
A study by Fearon et al concluded that ultrasound appears to be clinically useful in greater trochanteric pain syndrome (GTPS).[9]
Procedures
- Occasionally, diagnostic injection of local anesthetic into the trochanteric bursa may be helpful, particularly in an obese individual in whom the diagnosis is not yet certain.
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