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Table 1 Measurement errors of model-based RSA of the metacarpal and Trapezium component of the SR™TMC prosthesis after repeated measurements of five cadaveric hands in ten different positions. X,Y,Z: translations along the x-axis (medial-lateral), y-axis (distal-proximal) and z-axis (posterior-anterior). Rx,Ry,Rz: rotations around the x-axis (flexion-extension), y-axis (internal-external) and z-axis (abduction-adduction)

From: Feasibility of model-based Roentgen Stereophotogrammetric Analysis to evaluate early migration of the trapeziometacarpal joint prosthesis

Metacarpal Component X (mm) Y (mm) Z (mm) Rx (°) Ry (°) Rz (°)
 Average 0,006 -0,003 0,055 -0,034 0,502 0,043
 SD 0,098 0,181 0,133 1,759 1,617 1,069
 Min -0,156 -0,272 -0,150 -3,495 -1,699 -2,242
 Max 0,152 0,319 0,225 2,958 3,295 0,830
Trapezium Component X (mm) Y (mm) Z (mm) Rx (°) Ry (°) Rz (°)
 Average 0,025 0,003 -0,034 -0,148 -0,045 -0,474
 SD 0,093 0,057 0,082 0,749 0,762 1,085
 Min -0,057 -0,077 -0,117 -1,272 -0,703 -2,666
 Max 0,253 0,104 0,142 1,157 1,830 1,045