Cubitus Varus Deformity - Rationale of Treatment and Methods

Cubitus varus is commonest complication of paediatric supracondylar humerus fracture. These deformities are most commonly result of malunion, however avascular necrosis of trochlea or growth arrest of medial physis may also cause the deformity. Cubitus varus mostly presents as cosmetic deformity but it may also cause posterolateral instability, increased risk of secondary fractures, tardy ulna nerve palsy and snapping elbow. Current trend is to offer surgical correction for cubitus varus deformity in form of supracondylar osteotomy of the humerus. Various kinds of surgical approaches, osteotomy configuration and fixation methods are described in literature. The main guiding principles in deformity correction should be complete correction of sagittal varus deformity, correction of hyperextension deformity in older children. Rotational deformities may not be corrected but some authors do recommend triplanar correction. In our view lateral closed wedge oblique equal limb osteotomy fixed with reconstruction plate offers best results and is enough to treat most of the cubitus varus cases with minimal complication.