Bilateral Bifid Tendon of Palmaris Longus – Advantageous in Tendon Transfer?

Abstract

Background: Variable insertions of Palmaris longus (PL) muscle tendon is described by various authors. Mention of extra PL tendon is also described in literature. As autologus tendon grafting is a blooming arena of clinical research at present time, an additional tendinous slip of PL has promising scope for use as an autograft.

Case Report: We report here bilateral bitendinous distal attachment of PL muscle encountered during routine cadaveric dissection. The additional PL tendon in a multitendinous insertion pattern with optimum length and thickness is indeed an additional advantage from the point of view of auto graft harvesting. This has also importance in understanding the unusual altered symptomatology in compressive conditions.

Conclusion: Although relatively common, surgeons should be well aware of the various possible aversion of distal attachment of PL which might have significant impact in alteration of symptomatology of neurovascular compressions in the wrist and while choosing an appropriate tendon autograft.

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