Fig. 1From: Hand strenght and dexterity in interphalangeal hand osteoarthritis and effects of osteophyte formationsa Probe positioning for dorsal longitudinal view of proximal interphalangeal joint. Same positioning applied for examination of distal interphalangeal and 1st interphalangeal joints. b An osteophyte formation (arrowhead) observed as a cortical protrusion in proximal interphalangeal joint. MP: middle phalanx, PP: proximal phalanxBack to article page