Unusual Case of Extensor Indicis Attachment: Cadaveric Observation and Clinical Relevance

Variations in anatomical structure present challenges to patients as well as medical professionals. In reference to patients, it could affect their lifestyle in terms of function. As for the medical professionals, treatments such as surgery could be made more difficult. Knowing the rare variations leads to better medical care and patient satisfaction and prevents unexpected complications. We discuss the extensor indicis (EI) muscle and the extensor indicis brevis (EIB), an anatomical variation we found while dissecting. The EIB had an irregular origin and insertion. We will further discuss and explore the implications of the variation.