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The Influence of Elbow Position on the Range of Motion of the Wrist Following Transfer of the Brachioradialis to the Extensor Carpi Radialis Brevis Tendon.

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Presentation on theme: "The Influence of Elbow Position on the Range of Motion of the Wrist Following Transfer of the Brachioradialis to the Extensor Carpi Radialis Brevis Tendon."— Presentation transcript:

1 The Influence of Elbow Position on the Range of Motion of the Wrist Following Transfer of the Brachioradialis to the Extensor Carpi Radialis Brevis Tendon by Wendy M. Murray, Anne M. Bryden, Kevin L. Kilgore, and Michael W. Keith J Bone Joint Surg Am Volume 84(12):2203-2210 December 1, 2002 ©2002 by The Journal of Bone and Joint Surgery, Inc.

2 The passive properties of the wrist joint as a function of the position of the wrist. Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.

3 The model estimate of the operating range of the brachioradialis-extensor carpi radialis brevis tendon transfer between full extension of the elbow (0°) and 130° of flexion for the slack transfer (red), optimal transfer (blue), and tight transfer (y... Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.

4 The active range of motion of the wrist measured in eight wrists with the elbow extended (filled bars) and flexed 120° (open bars). Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.

5 The maximum extension of the wrist that could be achieved against gravity versus the resting position of the wrist against gravity when the elbow was extended (A) and when the elbow was flexed (B). Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.

6 Computer simulations of the active range of motion of the wrist against gravity for the slack (red), optimal (blue), and tight (yellow) transfers with the elbow in two postures. Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.

7 The active range of motion of the wrist estimated with use of the original model (the bars labeled 100%) and with the brachioradialis strength reduced in the model by 50% (the bars labeled 50%). Wendy M. Murray et al. J Bone Joint Surg Am 2002;84:2203- 2210 ©2002 by The Journal of Bone and Joint Surgery, Inc.


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