Flexor tendon repair using a stainless steel external splint. Biomechanical study on human cadaver flexor tendons |
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Authors: | Gordon L Dysarz F A Venkateswara K T Mok A P Ritchie R O Rabinowitz S |
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Institution: | Department of Orthopedic Surgery, California Medical Center, San Francisco, USA. lghand@aol.com |
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Abstract: | A stainless steel external tendon splint was used in repair of cadaver tendons and compared with standard tendon repairs with suture. The splint was combined with a Kessler repair and tested against the Kessler, Becker, and Savage repairs in fresh human cadaver flexor digitorum profundus tendons. Biomechanical testing was done on a tensile testing machine, and load-displacement curves were generated. The repairs using the external tendon splint demonstrated a range of improvement of 32 to 146% in mean maximal tensile strength and a 20 to 185% improvement of mean ultimate tensile strength compared with all other repairs. The external tendon splint is relatively easy to apply to a tendon. The repair is strengthened and becomes capable of withstanding early active range of motion exercises. In vivo testing will be needed to assess the potential clinical usefulness of such a device. |
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