In Vivo Radiocarpal Kinematics and the Dart Thrower's Motion

by Joseph J. Crisco, James C. Coburn, Douglas C. Moore, Edward Akelman, Arnold-Peter C. Weiss, and Scott W. Wolfe

J Bone Joint Surg AmVolume 87(12):2729-2740

December 1, 2005

©2005 by The Journal of Bone and Joint Surgery, Inc.

Palmar view of the reconstructed cortical surfaces of the carpal bones from a typical right wrist as well as the radius-based anatomic coordinate system used to describe carpal kinematics.

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

The wrist positions analyzed in the present study were distributed throughout the range of motion.

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

The direction of carpal bone rotation at each wrist position (see Figure 2) was visualized by plotting the directions of the rotation axes for the capitate (A), scaphoid (B), and lunate (C).

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

Three views of the scaphoid, lunate, capitate, and distal parts of the radius and ulna in wrist positions of flexion and extension (A), radial and ulnar deviation (B), dart thrower's radial

extension and ulnar flexion (C), and radial flexion and ulnar exten...

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

Graphs of the flexion-extension (A), supination-pronation (B), and radioulnar deviation (C) components of scaphoid rotation at each wrist position (see Figure 2).

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

Graphs of the flexion-extension (A), supination-pronation (B), and radioulnar deviation (C) components of lunate rotation at each wrist position (see Figure 2).

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.

Graphs of the scaphoid (A) and lunate (B) helical axis translations at each wrist position (see Figure 2).

Joseph J. Crisco et al. J Bone Joint Surg Am 2005;87:2729-2740

©2005 by The Journal of Bone and Joint Surgery, Inc.