Abstract
Digits 2 through 5 (index, middle, ring, and small) all have a distal, middle, and proximal phalanx. Digit 1, the thumb, has a distal and proximal phalanx only. A neurovascular bundle is on each side of the finger. Each of the five digits has both flexor and extensor tendons. There are six dorsal extensor tendons of the wrist. The extensor tendon inserts on the base of the distal phalanx of the finger and broadens out to a wider “hood” that laps over the PIP joint (proximal interphalangeal joint). Each finger has two flexor tendons – the profundus or deep tendon inserts on the base of the proximal aspect of the distal phalanx, while the superficial flexor tendon inserts on the base of the middle phalanx. Figure 6.1 demonstrates how to check both the profundus and superficial tendons.
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Daniels, J.M., Neumeister, M.W., Humphrey, J., Brenham, C. (2015). The Fingers. In: Daniels, J. (eds) Common Musculoskeletal Problems. Springer, Cham. https://doi.org/10.1007/978-3-319-16157-0_6
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DOI: https://doi.org/10.1007/978-3-319-16157-0_6
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