Journal
JOURNAL OF HAND SURGERY-EUROPEAN VOLUME
Volume 42, Issue 8, Pages 789-793Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1753193417714207
Keywords
Vascularized joint transfer; vascularized joint transfer; optimal bone length; proximal interphalangeal joint reconstruction; proximal interphalangeal joint
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Funding
- Departmental Research Funds, Department of Orthopedic Surgery, Mayo Clinic
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Vascularized toe joint transfer for finger proximal interphalangeal joint reconstruction can result in sub-optimal arc of motion and extension lag due to inappropriate intercalated bony segment length. We investigated the impact of intercalated segment length on passive arc of motion and extension lag of the reconstructed proximal interphalangeal joint. Cadaveric intercalated joint grafts were harvested from lesser toes and transferred to cadaveric fingers. The pre-determined finger proximal interphalangeal joint defect size was 2cm. Three different intercalated segment lengths were inserted and resulting proximal interphalangeal joint arc of motion and extension lag were measured. The average arc of motion of finger proximal interphalangeal joints was 81 degrees and 54 degrees for toe proximal interphalangeal joints. Long intercalated segments had an average arc of motion of 30 degrees with 32 degrees extension lag. Equal-length intercalated segments had an average 49 degrees arc of motion with 15 degrees extension lag. Short intercalated segments had an average arc of motion of 71 degrees with 8 degrees extension lag. Shorter intercalated segments provide the greatest reduction in extension lag.
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