[Humeral lengthening: case report].

Introduction: Difference in length of upper extremities has mainly esthetic significance and is therefore not so often a subject of operative treatment, compared to lower extremities.

Case Outline: We are presenting a case of a 16-year-old patient in whom a shortening of 9 cm of the right humerus was determined at the end of growth. This shortening was the result of surgical treatment of solitary bone cyst at the proximal end of the humerus done at the age of 10 years. In order to correct the length of the humerus we applied distraction osteogenesis with a compressive-distracting device according to Mitkovic (Traffix), and we achieved the lengthening of 7.5 cm. During the period of distraction we encountered the following complications: minimal suppuration at the site of the wedges that was successfully resolved with intensive local treatment, while pain and paresthesias along the N. radialis were resolved with a temporarily slowing of the distraction process. Fixation with a plate, i.e. bone grafting was not necessary, and final functional and esthetic result was excellent.

Conclusion: Successful lengthening of the shortened humerus can be achieved with a unilateral compressive-distracting device according to Mitkovic as its application up to a complete bone reconstruction does not require additional plate fixation or bone grafting. The patient was capable of performing usual daily activities during application of the device.