Abstract
The distal end of ulna is an extremely uncommon site for primary bone tumors in general and giant cell tumor in particular. Wide resection is usually indicated in such cases and at times it may be necessary to remove of a long segment of the distal ulna. Any ulnar resection proximal to the insertion of pronator quadratus can lead to instability in the form of radio-ulnar convergence and dorsal displacement (winging) of the ulnar stump. This can result in diminution of forearm rotation and weakness with grasp. Stabilization of the ulnar stump after resection for a giant cell tumor was described by Kayias & Drosos. We are adding two more cases to the literature. Both patients had excellent functional outcome and there were no instances of recurrence at three years of follow-up.
Highlights
Giant cell tumour (GCT) of bone is a rare, benign, locally invasive tumour, accounting for approximately 3% to 5% of all primary bone tumours [1]
Stabilization of the ulnar stump after resection for a giant cell tumor was described by Kayias & Drosos
We present two patients with GCT of the distal ulna, both treated by wide resection of the distal ulna followed by stabilisation of the remaining ulna using one half of the extensor carpi ulnaris (ECU) tendon
Summary
Giant cell tumour (GCT) of bone is a rare, benign, locally invasive tumour, accounting for approximately 3% to 5% of all primary bone tumours [1]. Case report 1 A 22-year-old Indian male, painter by occupation, presented to us with a painless swelling along the ulnar aspect of his right distal forearm since the last four months. The patient had a normal function and muscle strength, no pain and no ulnar instability He had restriction of forearm pronation - supination of approximately 15 degrees. The post operative protocol was similar as described for Case #1 This patient had normal function and muscle strength, no pain or ulnar instability and full range forearm flexion - extension and pronation - supination. He scored 18 out of 18 points on the Ferracini scale. There were no instances of recurrence in either case at three years of follow-up
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