Giant Cell Tumor in the Distal End of the Ulna Managed by Darrach's Procedure: A Case Report.

Giant cell tumors (GCTs) are rare, benign, and locally invasive tumors, typically found in the epiphysis of long bones, most commonly at the distal femur and proximal tibia. To date, GCTs of the distal end of the ulna have been very rare. We document a case of a 38-year-old female with a distal ulna GCT, managed with en-bloc resection of the tumor with flexor carpi ulnaris and extensor carpi ulnaris tendon stabilization. The main aim of the GCT treatment is to prevent local recurrence and to maintain the function of the limb. Physical therapy was also given to the patient which helped in relieving pain, reducing edema, and increasing strength and range of motion. The patient was able to perform activities of daily living with the help of physical therapies and exercises. More research is needed to determine if broad excision of the distal ulna alone is a successful therapy for primary bone cancers affecting the distal ulna, including GCTs.