MULTISLICE COMPUTED TOMOGRAPHY OF DISTRACTED REGENERATION IN PATIENTS WITH SUBJECTIVELY SHORT STATURE AND VARUS DEFORMITY OF THE LOWER LIMB

Abstract

Objective. To investigate the characteristics of lengthening the lower limb in its proximal portion in patients with subjectively short stature and varus deformity.Material and methods. Computed tomography was used to analyze the features of distracted regeneration in the proximal tibia in 65 patients with subjectively short stature, limb shortening and deformity secondary to various etiologies at different stages of leg lengthening.Results. Regeneration in lengthening the leg and eliminating varus deformity was characterized by its anatomical features while maintaining the typical zonal structure. 85% of patients older than 30 years of age had a characteristic mass over the anterior surface of the low-density regeneration area that was subsequently manifested by a reduction in the bone diameter, by a marginal defect, or by formation of a cyst. Bone organotypic remodeling after lengthening came to an end 1–3 years later, depending on the etiology of the disease and the magnitude of lengthening.Conclusion. The findings showed that bone regeneration during distraction in patients with any etiology of shortening had a clearly marked zonal structure with bone portions and growth areas – a connective tissue layer. Bone regeneration during fixation was presented by a trabecular bone with longitudinally or obliquely oriented bone trabeculae. In patients with subjectively short stature at the age of over 35 years, the bone organotypic remodeling period lasted two or three years. The findings should be kept in mind during treatment and rehabilitation.

Keywords

• computed tomography
• leg
• lengthening
• distracted regeneration