Stress fracture of the ulna in a softball pitcher.

Background/aims: We present a rare case of stress fracture of the diaphysis of the ulna in a softball pitcher.

Case: A thirteen-year-old girl felt pain over the distal third of the right forearm during pitching. Stress fracture was detected as callus formation of the ulna before fracture displacement.

Localized naviculocuneiform arthrodesis combined with osteosynthesis of fracture nonunion of the tarsal navicular bone using a locked plating system.

Aims: Navicular fracture is still challenging disorder to treat because there is a risk of nonunion, avascular necrosis and symptomatic osteoarthritis.

Patients Methods And Results: A 40-year-old woman with an ununited fracture of the tarsal navicular bone was treated with localized naviculocuneiform arthrodesis (arthrodesis of the navicular, the middle cuneiform, and the lateral cuneiform). Fusion with the navicular, the middle cuneiform, and the lateral cuneiform as well as union of fracture of the navicular was confirmed on the radiographs.

Surgical treatment of posterior interosseous nerve paralysis in a tennis player.

We report a rare case of posterior interosseous nerve (PIN) paralysis in a tennis player. The PIN, a 2 cm section from a bifurcation point of the radial nerve, presented increased stiffness in the surgical findings and treated with free sural nerve grafting after excision of the degenerative portion of the PIN. We speculate that PIN paralysis associated with hourglass-like constriction can be caused and exacerbated by repetitive forearm pronation and supination in playing tennis.

Treatment of stress fracture of the olecranon in throwing athletes with internal fixation through a small incision.

The present study is a report of retrospective case series of stress fracture of the olecranon. Six patients presented posterior elbow pain in throwing in baseball and softball, but fracture was not diagnosed in radiographs. We detected stress fracture of the olecranon using computed tomographic (CT) scan and treated the patient with internal fixation with a headless cannulated double threaded screw through a small skin incision.