in this study 93 femoral heads of patients with primary osteoarthritis could be differentiated into three osteologic types using histomorphometry : ( 1 ) the osteosclerotic type ( 77 % of cases ) , ( 2 ) the hyperostotic type , with excessive neogenesis of bone all over the femoral head and increased formation of osteophytes ( 10 % of cases ) , and ( 3 ) the osteopenic type , with decreased bone mass and features of bone remodelling , a greater occurrence of subchondral cysts , and small osteophytes ( 8 % of cases ) .
C0020492
hyperostotic
C0262950
bone