The lateral curved osteotomy for cubitus varus deformity in children: A case report and literature review

Introduction

Cubitus varus deformity after malunited supracondylar humerus fracture has various surgical techniques, implant configurations, and approaches. We describe a combination of French and Dome osteotomy and novel internal fixation technique to deliver an easy, safe, fast and reproducible result based on the current best evidence.

Presentation of case

Two cases of malunited supracondylar humerus are described. The first case involves a 3-year-old girl who presented with outstretched and supinated left arm after falling during bike riding 3 weeks earlier. We found no abnormality in radial and median nerve function, but the left arm radiographs showed a callus formation and the early stages of a malunited fracture of the supracondylar humerus. We waited two months for further radiographic evaluation and the radiographs showed the malunited supracondylar humerus with elbow flexion of only 105° and elbow hyperextension of 20°. The cubitus varus was recorded with clinical carrying angle of varus 10°. We used a combination of original French and Dome osteotomy, lateral approach, and our novel fixation technique with excellent results. The second case involved a 8-year-old boy with malunited right elbow and the surgery was done in the same manner, with the result of restoration to normal elbow range of motion. We also assessed the pain score and disabilities of the arm, shoulder and hand (DASH) score and recorded satisfactory results.

Conclusions

The combination of French and Dome osteotomy for treatment of cubitus varus deformity can provide an easy, safe, and reproducible result.

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Cubitus varus deformity.

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Malunited supracondylar humerus.

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French osteotomy.

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Dome osteotomy.

A technical note

BACKGROUND

Cubitus varus is the most common delayed complication of pediatric supracondylar humerus fractures. We developed a new technique, the triple modified French osteotomy, that we believe may be the answer to this common but yet unsolved deformity.

MATERIALS AND METHODS

Ten patients aged between 6 and 12 years with post-traumatic cubitus varus deformity were operated on with the triple modified French technique. A varus angle of more than 10° measured on the radiograph was an indication for surgery.

RESULTS

The radiologic union at the osteotomy site took place in a mean period of 5.5 weeks (range, 4.5-7 weeks). The average correction achieved by the osteotomy was 27°. There were no cases with complications of radial or ulnar nerve palsy or joint stiffness.

CONCLUSION

The triple modified lateral closing wedge French osteotomy is a simple and cosmetically effective method of treating cubitus varus deformity in children. It may obviate the need for more complex procedures; at the same time, it also addresses the potential drawbacks of a simple closing wedge osteotomy.