Accidental finding on bone scan: isolated upper sternal cleft in an adult.

Cleft sternum is an extremely rare anomaly of development. It results from failure of fusion of midline structures that contribute to the formation of the sternum. The defect may affect the upper sternum, the lower sternum, or the whole sternum.

Open fracture as a rare complication of olecranon enthesophyte in a patient with gout.

Enthesophytes are analogous to osteophytes of osteoarthritis. Enthesopathy is the pathologic change of the enthesis, the insertion site of tendons, ligaments, and joint capsules on the bone. In gout, the crystals of monosodium urate monohydrate may provoke an inflammatory reaction that eventually may lead to ossification at those sites (enthesophytes).

The triple PCL sign: bucket handle tears of both medial and lateral menisci in a chronically ACL-deficient knee.

Bucket handle tears of both menisci in the setting of acute or chronic anterior cruciate ligament (ACL) tears of the same knee have rarely been reported in the literature. This article presents a case of a bucket handle tear affecting both the medial and lateral menisci in a patient with chronic ACL rupture. Both bucket handle tears were displaced and locked in the intercondylar notch.

Pediatric trigger thumb in identical twins: congenital or acquired?

Pediatric trigger thumb is an uncommon condition with a calculated incidence of 3 per 1000 live births or less. Some reports have suggested a congenital etiology while others could not find a single case of pediatric trigger thumb at birth. This article reports the occurrence of bilateral trigger thumbs in identical twins, age 3 years and 9 months, affecting their thumbs to similar extents, which may suggest a congenital etiology.