Histomorphometric analysis of subchondral bone of the femoral head in osteoarthritis and osteoporosis

Marin Marinović, Edo Bazdulj, Tanja Celić, Tedi Cicvarić, Dragica Bobinac
Collegium Antropologicum 2011, 35 Suppl 2: 19-23
There have been reports both supporting and refuting an inverse relationship between hip fracture and hip osteoarthritis (OA). We have investigated this relationship using histomorphometric study of femoral head subchondral bone. We studied 74 subjects with hip fracture (74% females) and 24 subjects with osteoarthritis (45% females). By histomorphometric analysis of parafined sections, we analysed followed subhondral trabecular bone parameters bone volume (BV), bone volume/tissue volume (BV/TV), trabecular thickness (Tb.Th.), trabecular number (Tb.N.) and trabecular separation (Tb.S.). The subjects with osteoarthritis and subjects with hip fracture had BV/TV 31.3% and 19.6% respectively. BV/TV of osteoarthritis group was rather uniform whereas BV/TV of hip fracture group was greatly ranged and we divided it into three subgroups, 13.2%, 19.8% and 25.9% respectively. The OA group and hip fracture groups had Tb.Th. as followed 0.205 mm, 0.148 mm, 0.170 mm and 0.183 mm respectively. The OA group and hip fracture three subgroups had Tb.N. as followed 1.454/mm, 0.897/mm, 1.170/mm and 1.425/mm respectively. The OA group and hip fracture three subgroups had Tb.S. as followed 0.518 mm, 0.681 mm, 0.620 mm and 0.550 mm respectively. The results of our study support an inverse relationship between hip fracture and hip osteoarthritis.

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