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

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.

computed tomography, leg, lengthening, distracted regeneration

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