[Lateral closing wedge osteotomy for treatment of traumatic cubitus varus deformity in children].

OBJECTIVE: To investigate the effectiveness of lateral closing wedge osteotomy for treatment of traumatic cubitus varus deformity in children.

METHODS: Between July 1996 and June 2010, 20 cases of traumatic cubitus varus deformity after humeral supracondylar fracture were treated by lateral closing wedge osteotomy. There were 13 boys and 7 girls, aged from 7 to 14 years (mean, 10.6 years). The left elbow was involved in 12 cases and right elbow in 8 cases. Thirteen cases had received closed reduction, percutaneous Kirschner wire fixation, and external fixation in other hospital, and 7 cases misdiagnosed as elbow luxation and soft tissue injury had given external fixation. Cubitus varus deformity occurred at 2-12 years after injury. Preoperatively, the elbow range of motion (ROM) in flexion and extension was 100-150 degrees (mean, 133.0 degrees) and 0-24 degrees (mean, 11.7 degrees), respectively. The angle of cubitus varus deformity was 20-50 degrees (mean, 32.1 degrees).

RESULTS: All incisions healed by first intention, and no related complication occurred. A total of 17 patients were followed up 1-14 years (mean, 5 years). X-ray films revealed that bone union was achieved in all cases within 5-8 weeks after operation (mean, 6 weeks). The deformity of cubitus varus was corrected in all cases. At last follow-up, the elbow ROM in flexion and extension was 110-150 degrees (mean, 135.9 degrees) and 0-27 degrees (mean, 12.9 degrees), respectively. According to Jupiter et al. elbow score system, the results were excellent in 14 cases, good in 2 cases, and fair in 1 case; the excellent and good rate was 94.1%. One patient underwent recurrence at 1 month after removal of the Kirschner wire, and lateral closing wedge osteotomy was performed again after 1 year.

CONCLUSION: Lateral closing wedge osteotomy is a safe and effective surgical procedure in correcting traumatic cubitus varus deformity in children, which is easy to operate and can be effective in reducing the complications.