Functional outcome of en bloc resection and osteoarticular allograft reconstruction with locking compression plate for giant cell tumor of the distal radius

Background

Giant cell tumors of the distal radius at Campanacci grade III are particularly challenging to treat. We have treated 15 cases of giant cell tumor of the distal radius by en bloc excision and osteoarticular allograft reconstruction with locking compression plate (LCP). The purpose of this study was to assess the intermediate outcomes of all patients treated with this surgery.

Methods

From July 2002 to January 2009, we followed up 15 patients with giant cell tumors of the distal radius who were treated with en bloc excision and osteoarticular allograft reconstruction with LCPs that were long enough to approach the distal end of the allograft. All of the cases were evaluated based on clinical and radiologic examinations, the passive range of motion of the wrist joint, complications, Mayo wrist score, and short form (SF)-36.

Results

The clinical follow-up time after reconstruction averaged 5.2 years. The mean resected length of the radius was 8.1 cm. One patient had tumor recurrence in the soft tissues after 3 years (recurrence rate 6.67 %). No patient had allograft bone fracture, nonunion, or metastases. Subchondral bone alterations and joint narrowing were present in all cases, with 1 patient suffering from the pain, but the pain could be endured without the need for analgesics. The average range of motion of the wrist was 46.7° of dorsiflexion, 33.3° of volar flexion, 61.3° of supination, and 72.3° of pronation. The mean Mayo wrist score was 70 and the mean modified SF-36 score was 71.

Conclusions

En bloc excision and osteoarticular allograft reconstruction with an appropriate LCP for a Campanacci grade III giant cell tumor of the distal radius result in a reasonable functional outcome at intermediate follow-up evaluation. This method can excise the tumor integrally with a low rate of recurrence, good function, and a satisfactory range of motion.