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Title: [Epiphyseal Bar Resection for Correction of Clinodactyly].
Author: Winkler FJ, Mann M, Habenicht R, Hülsemann W.
Journal: Handchir Mikrochir Plast Chir; 2016 Feb; 48(1):41-7. PubMed ID: 26895519.
Abstract:
BACKGROUND: Clinodactyly is a digital angulation in the radio-ulnar plane. Mostly it is seen on the little finger. The middle phalanx typically has a triangular or trapezoid shape (delta phalanx), resulting in radial deviation of the distal phalanx. Resection of the longitudinal epiphyseal bracket (physiolysis) with fat graft interposition is a possible surgical technique, which uses children's growth potential to correct the axial deviation. AIM: The purpose of our study was to review the degree of correction at least 2 years postoperatively and after an average of 5 years postoperatively, and to find out if children´s age influences the results. PATIENTS AND METHODS: 23 children (43 little fingers) underwent physiolysis and were retrospectively analyzed after a median follow-up of 5 years (2.1-7.9 years). The active range of motion of the little finger's MP, PIP and DIP joints and finger-palm-distance were measured. Lateral deviation was determined by using standardized radiographs and subsequently compared with preoperative values. Patients were divided into 2 subgroups: younger than 3 years (16 fingers, group A), older than 3 years (27 fingers, group B). The achieved correction of the lateral deviation was compared between both groups. RESULTS: All patients showed full active range of motion in all joints of treated fingers. Finger-palm-distance was 0 cm. No complications occurred. The mean preoperative deviation of all patients was 37°±11, which improved after surgery by 17°±11 (i. e. 44.0%±23.1 of initial findings). Group A demonstrated a mean preoperative lateral deviation of 40°±9, and group B a mean deviation of 36°±12. In both groups we saw a similar improvement (group A mean: 17°±10, group B mean: 17°±11). In group A there was a wider dispersion of postoperative results. In the age group 7 to 10, the results of individual cases show the large variability of the corrective potential. X-rays revealed the following incidental findings after surgery: a premature fusion of the proximal radial epiphyseal plates in 2 fingers and a sinuous-shaped proximal radial epiphyseal plate in 12 other fingers. CONCLUSION: Resection of the longitudinal epiphyseal bracket with fat graft interposition is a technically simple and effective treatment option for clinodactyly, particularly in children of 3 to 6 years of age.

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