Avascular necrosis of the radial carpal bone
Avascular necrosis of the canine radial carpal bone is a rare orthopedic disease of the distal radial carpal bone characterized by osteolysis.
In humans, this disease is thought to be initiated by carpal fracture nonunion, but in dogs, the cause is unknown.
Resembling Preiser's disease of humans, this condition appears histologically as replacement of healthy bone with granulation tissue suggestive of ischaemic necrosis.
Diagnosis is usually suggestive from radiographic appearance but definitive diagnosis requires histological examination of bone biopsies.
Treatment is usually curative with pancarpal arthrodesis.
- Sunagawa T et al (2000) Role of conventional and vascularized bone grafts in scaphoid nonunion with avascular necrosis: A canine experimental study. J Hand Surg Am 25(5):849-859
- Aiken MJ et al (2013) Avascular necrosis of the canine radial carpal bone: a condition analogous to Preiser's disease? J Small Anim Pract Apr 26