Figure 1: Tc 99m methylene diphosphonate scintigraphic images of the hand in the delayed phase (a) dorsumand (b) palmar views showing diffusely increased periarticular tracer uptake in the wrist joint, carpal bones and metacarpal and interphalangeal joints of right hand indicating bone scan positive (BSP) complex regional pain syndrome. Images (c and d) represent images of a patient with negative bone scan. Bone scan images of the foot (e) medial, (f) lateral, (g) dorsal and (h) plantar also show diffusely increased periarticular tracer uptake in the distal tibia, tarsal bones and metatarso-phalangeal and interphalangeal joints on left siderepresenting BSP foot