[A study of vascular changes on disintegration and repair of the femoral head with advanced osteoarthritis of the hip].
Microangiography was performed on 65 femoral heads with advanced osteoarthritis to investigate the vascular changes on disintegration and repair of the femoral head. Affected femoral heads were removed during prosthetic replacement. A needle was inserted into the nutrient vessel of the extraosseous area and the contrast medium was injected by manual pressure through the needle. After slicing the femoral head, decalcification was performed and Spalteholz's preparations were prepared. Anastomosis between the superior and inferior retinacular arteries was found in all cases. Hypertrophy and hypervascularity of the retinacular arteries were observed on the weight bearing region. On the cystic lesion corresponding to the weight bearing region, numerous arteries were extended around the cyst. On the surface of the eburnated femoral head, the peripheral arteries coursing to the joint was not tapered and dilatation of these arteries was demonstrated. On some areas of the head, however, repairing arteries reaching to the joint surface lay horizontally. From this result, it was assumed that numerous arteries proliferated to the eburnated area and to around the cyst for repairing reaction, but that these were damaged by mechanical stress.
Yamano
K
K
Department of Orthopaedic Surgery, Showa University, Fujigaoka Hospital, Kanagawa, Japan.
D000328:Adult; D000368:Aged; D000792:Angiography; D001158:Arteries / Q000473:pathology*; D005260:Female; D005270:Femur Head / Q000098:blood supply* / Q000473:pathology; D006621:Hip Joint; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000473:pathology*