## Overview A slab fracture of the third carpal bone extends through the full thickness of the bone from one joint surface to another. It is more serious than a chip fracture and is common in Thoroughbred racehorses. Acute lameness during fast work, marked carpal effusion, and a severe flexion response are typical. Surgical lag-screw repair is the treatment of choice. ## Causes High-speed loading. ## Diagnosis Radiographs. Computed tomography may be needed for full assessment. ## Treatment Lag-screw fixation under arthroscopic guidance for slabs thicker than about 10 mm. Thin fragments may be removed. ## Recovery and Prognosis Fair to good with accurate repair. Osteoarthritis can develop. ## Prevention Training management in racehorses.
acute lameness during racing or fast work; marked carpal effusion; severe flexion test; radiographic slab fracture
## Overview A slab fracture of the third carpal bone extends through the full thickness of the bone from one joint surface to another. It is more serious than a chip fracture and is common in Thoroughbred racehorses. Acute lameness during fast work, marked carpal effusion, and a severe flexion response are typical. Surgical lag-screw repair is the treatment of choice. ## Causes High-speed loading. ## Diagnosis Radiographs. Computed tomography may be needed for full assessment. ## Treatment Lag-screw fixation under arthroscopic guidance for slabs thicker than about 10 mm. Thin fragments may be removed. ## Recovery and Prognosis Fair to good with accurate repair. Osteoarthritis can develop. ## Prevention Training management in racehorses.
acute lameness during racing or fast work; marked carpal effusion; severe flexion test; radiographic slab fracture