CARPAL TUNNEL

SUMMARY

1. The flexor surface of the carpus is deeply concave and is converted into a tunnel by the flexor retinaculum.

2. The 4 tendons of the FDP lie deep, whereas the 4 tendons of the FDS lie superficial. These share a common synovial sheath.

3. The tendon of the FPL lies within its own synovial sheath.

4. The tendon of the FCR lies within its own fibro-osseous tunnel.

5. The median nerve passes beneath the flexor retinaculum between the FDS tendon (medial to n.) and FCR tendon (lateral to n.).

Image: Case courtesy of Dr Craig Hacking, Radiopaedia.org. From the case rID: 47155 [Accessed 20 Apr 2020].

Reference(s)

R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone.
Gray, H., Carter, H.V. and Davidson, G. (2017). Gray’s anatomy. London: Arcturus.