Abstract
Background. Congenital radial club hand is characterized by the radial deviation of the hand, the longitudinal underdevelopment of the forearm, and the dysfunction of the upper limb. The shortening of the ulna is observed in all types of congenital radial club hand. The average shortening of the ulna surgical treatment was 33.3% compared to the intact contralateral side.
 Aim. This study aimed to evaluate the results of ulna elongation by the method of external fixation, depending on the level of osteotomy, in patients with congenital radial club hand type IIIIV.
 Materials and methods. The treatment results of 36 patients with congenital radial club hand type IIIIV from 1998 to 2018 were analyzed. The average age of the patients was 7.4 years 3.5 years. The patients were divided into three groups, depending on the level of ulnar osteotomy. Shortening of the ulna, correction of the angle of deformity of the ulna, radial deviation of the hand, period of correction, elongation obtained, index of fixation and osteosynthesis, and associated complications were analyzed.
 Results. The observation period was an average of 5.8 years. Before surgical treatment, the ulna was 33.3% shorter, while after surgery, it was 16%. Before surgery, the angle of deformation was 20.5 14.8, while after surgery, it was 7.4 5.6; this gives an angle of deformity correction of 63.9%. The elongation of the ulna was 3.2 1.1 cm. In patients who underwent proximal osteotomy, the resulting elongation was 32% and 18.4% more, respectively, than in patients who underwent an osteotomy in the middle and distal sections of the ulna. In group 1, the correction period was 24.4% and 28.9% more than in groups 2 and 3, respectively. The index of fixation in group 1 was 53.6%, which was 45.7% less than in groups 1 and 3. Postoperative complications included a false joint (15%), inflammation (10%), and forearm deformities (7.5%).
 Conclusions. In patients with congenital radial club hand type IIIIV, the optimal part of an ulna osteotomy is the proximal section. With a hand deviation of more than 20, osteotomy is performed in the distal section with simultaneous correction of the deformity.
Highlights
Исследование показало, что для удлинения локтевой кости у пациентов с врожденной лучевой косорукостью III–IV типов оптимальной зоной остеотомии является ее проксимальный отдел
Congenital radial club hand is characterized by the radial deviation of the hand, the longitudinal underdevelopment of the forearm, and the dysfunction of the upper limb
The shortening of the ulna is observed in all types of congenital radial club hand
Summary
Удлинение локтевой кости методом дистракционного остеосинтеза у детей с врожденной лучевой косорукостью // Ортопедия, травматология и восстановительная хирургия детского возраста. Цель — оценить результаты удлинения локтевой кости методом дистракционного остеосинтеза в зависимости от уровня остеотомии у пациентов с врожденной лучевой косорукостью III–IV типов. Проведен ретроспективный анализ результатов лечения 36 пациентов с врожденной лучевой косорукостью III–IV типов в период с 1998 по 2018 г. Проанализированы основные показатели: процент укорочения и коррекция угла деформации локтевой кости, лучевая девиация кисти, период коррекции, полученное удлинение, индекс фиксации и остеосинтеза, осложнения. Процент укорочения локтевой кости по отношению к интактной конечности до оперативного лечения составлял в среднем 33,3 %, а после — 16 %. Исследование показало, что для удлинения локтевой кости у пациентов с врожденной лучевой косорукостью III–IV типов оптимальной зоной остеотомии является ее проксимальный отдел.
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