Two patients with complicated giant cell tumors of the distal ulna wer
e treated by resection of 7.5 and 5.5 cm of the ulna, respectively. Th
e proximal ulnar stump was stabilized with a lasso tendon graft, which
allowed the patients to return to presurgery activities. The techniqu
e described is a modification of a tendon loop reconstruction used by
Bunnell.