Avtor/Urednik		Antolič, V
Naslov		Biomehanika kolka pri Perthesovi bolezni
Prevedeni naslov		Biomechanics of the hip in Perthes' disease
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Medicinska fakulteta
Leto izdaje		1995
Obseg		str. 88
Jezik		slo
Abstrakt		Legg-Calve-Perthes' disease (PD) is characterized by infarction of the ossifying nucleus of the femoral head occurring for reasons yet unknown. Restoration of the head by resorption of the necrotic bone and new bone formation takes several years to be complete. During the period of healing, lateral protrusion of a part of the femoral head with a consequent indentation of the acetabular edge into the head may occur, leading to the development of early hip arthrosis. Varisation osteotomy is performed to decrease the collodiaphyseal (CDD) angle, which affords better anchorage of the extruded part of the femoral head in the acetabulum, and reduces the risk of the development of non-spherical femoral head. We studied retrospectively two groups of patients with unilateral PD, as follows: a group treated conservatively (n=30, 24 boys and 6 girls, average age on the onset of PD 4,8 years), and a group of children treated by surgery (n=69, 55 boys and 14 girls, average age on the onset PD being 6.5 years, average age at the time of operatin- 7.3 years). The extent of vascular lesion was smaller in the group receiving conservative therapy. Lateral protrusion was observed in 42 operated patients and in only one non-operated child. The patients' clinical records were examined and x-ray measurements of the normal and affected side were carried out prior to surgery, immediately upon surgery and 6 years postoperatively. The group of conservatively treated patients had up to 6 measurements during the 6-year follow-up period. Post-PD biomechanical status was evaluated using mathematical mod elling. Children who were operated on at on older age showed greater limitation of the range of motion and more pronounced leg shortening 6 years after the operation. The hip sphericity was similar in both groups, shortening of the limb was more pronounced in the operated group, and the range of motion was less limited in the group treated conservatively.(trunc.)
Deskriptorji		LEGG-PERTHES DISEASE HIP JOINT BIOMECHANICS RETROSPECTIVE STUDIES CHILD HIP BIOMETRY OSTEOTOMY MODELS, THEORETICAL