Lieber RL, Fridén J. Intraoperative measurement and biomechanical modeling of the flexor carpi ulnaris-to-extensor carpi radialis longus tendon transfer. J Biomech E 119:386-391, 1997.
Sarcomere length was measured intraoperatively in five patients undergoing tendon transfer of the flexor carpi ulnaris (FCU) to the extensor carpi radialis longus (ECRL) for radial nerve palsy. All measurements were made with the elbow in 20 deg of flexion. Prior to tendon transfer, FCU sarcomere length ranged from 2.84 +/- .12 microns (mean +/- SEM) with the wrist flexed to 4.16 +/- .15 microns with the wrist extended.
After transfer into the ECRL tendon, sarcomere length ranged from 4.82 +/- .11 microns with the wrist flexed (the new longest position of the FCU) to 3.20 +/- .09 microns with the wrist extended, resulting in a shift in the sarcomere length operating range to significantly longer sarcomere lengths (p <>
After transfer into the ECRL tendon, sarcomere length ranged from 4.82 +/- .11 microns with the wrist flexed (the new longest position of the FCU) to 3.20 +/- .09 microns with the wrist extended, resulting in a shift in the sarcomere length operating range to significantly longer sarcomere lengths (p <>
