X線北大病期分類(大腿・脛骨関節)

X線北大病期分類(大腿・脛骨関節)

Ⅰ Bone spur only

Ⅱ Narrowing of joint space(less than 1/2 normai joint space)

Ⅲ Narrowing of joint space(more than 1/2 normal joint space)

Ⅳ Obliteration of joint space or minor bone attriation (under 1 cm)

Ⅴ Major bone attriation (over 1 cm),’subluxation, or secondary lateral arthrosis