Communicating foramen between the tendon sheaths of the extensor carpi radialis brevis and extensor pollicis longus muscles: imaging of cadavers and patients.

Objective: The purpose of this study was to examine the anatomic features and imaging appearance of the intersection of the extensor pollicis longus (EPL) tendon with the extensor carpi radialis brevis (ECRB) and longus (ECRL) tendons in cadavers and patients.

Materials And Methods: MR and CT tenography were performed on 10 cadaveric wrists, and tenosynovial endoscopy and dissection of the EPL tendon sheath were performed on five additional cadaveric wrists. A computer-assisted search of dictated MRI reports identified 12 wrists of patients with simultaneous EPL tenosynovitis and ECRB and ECRL tenosynovitis.

MRI diagnosis of tears of the hip abductor tendons (gluteus medius and gluteus minimus).

Objective: The purpose of our study was to determine the accuracy of MRI for diagnosing tears of the hip abductor tendons (gluteus medius and gluteus minimus) and to evaluate various signs of tendon disruption.

Materials And Methods: We retrospectively evaluated MRIs of 74 hips (in 45 patients) that were obtained using 35- to 42-cm fields of view and interpreted using primary and secondary signs of tendon disruption. Fifteen hips had surgically proven abductor tendon tears, and 59 hips were either asymptomatic or had surgically confirmed intact tendons.