A classification system for anomalies of the extensor pollicis longus
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Variations of the long extensor tendon to the thumb are very rare.
Materials and Methods
We present three cases in which there was a supernumerary long extensor tendon to the thumb. In all three cases, the supernumerary tendon emerged from the fourth dorsal compartment and had a parallel course to the extensor pollicis longus.
Details of the anomalies are described along with a meta-analysis of relevant literature. A classification system of these anomalies is also proposed.
KeywordsExtensor tendon Thumb Supernumerary tendon Anomalies
No financial benefits or otherwise have been received by any of the authors for the whole or part of this study. There are also no conflicts of interest.
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