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Journal of Hand Surgery (European Volume)
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Articles

Forces Transmitted Along Human Flexor Tendons – The Effect of Extending the Fingers Against the Resistance Provided by Rubber Bands

E. S. POWELL
I. A. TRAIL

From the Department of Hand and Upper Limb Surgery, Wrightington Hospital NHS Trust, Wrightington, Nr Wigan, UK

Correspondence: Dr E.S. Powell, The Department of Hand and Upper Limb Surgery, Wrightington Hospital NHS Trust, Hall Lane, Wrightington, Nr Wigan, WN6 9EP, UK. Tel.: +44 1257 256413; fax: +44 1257 256248. E-mail:esp3{at}cyberwise.co.uk.

We wished to test the hypothesis that postoperative extension of repaired flexor tendons against rubber bands will reduce the stress on the repairs, and therefore the risk of rupture. During 24 routine carpal tunnel decompression operations the force in flexor tendons was measured using a load cell. The patients flexed and extended their fingers with and without a rubber band providing resistance to extension. We found no statistically significant difference between the force measured in the tendon with or without the presence of rubber bands. To conclude, we have shown that if the application of rubber band dynamic splintage after flexor tendon repair has any advantage, it is not by reducing the forces transmitted along the tendon during resisted extension or by aiding flexion.

Key Words: forces • flexor tendons • extension resistance • hand • in vivo

This version was published on April 1, 2009

Journal of Hand Surgery (European Volume), Vol. 34, No. 2, 186-189 (2009)
DOI: 10.1177/1753193408096016
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