CMC OA is diagnosed based on clinical findings and radiologic imaging. Classification CMC OA can be divided into different stages which show the progression of the disease. The most commonly used classification is the radiological staging protocol according to Eaton and Littler. Four different stages are distinguished on radiological evidence of synovitis, joint space and capsular laxity. Stage 1: :::::::::::* "synovitis phase" :::::::::::* slight widening of the joint space :::::::::::* articular contours are normal :::::::::::* 1/3 subluxation of the joint * Osteophytes, in diameter, are present (usually adjacent to the volar and dorsal facets of the trapezium) * Slight joint space narrowing Stage 4<unk> , with major subluxation of the joint. Stage 4: * Major subluxation of the joint. * Very narrow joint space * Cystic and sclerotic subchondral bone changes are present * Significant erosion of the scaphotrapezial joint.
Trapeziometacarpal osteoarthritis
Median rhomboid glossitis
Carpal coalition
Olecranon bursitis
Metatarsophalangeal joint sprain
Back strain
Tarsal tunnel syndrome
Retrocalcaneal bursitis