| Extensor expansion | |
|---|---|
 Extensor expansion covers the tendon of extensor digitorum tendons over the proximal phalanges | |
| TA2 | 2502 |
| Anatomical terminology | |
An extensor expansion (extensor hood,[1] dorsal expansion, dorsal hood, dorsal aponeurosis[citation needed]) is the special connective attachments by which the extensor tendons insert into the phalanges.
These flattened tendons (aponeurosis) of extensor muscles span the proximal and middle phalanges.[2]
At the distal end of the metacarpal, the extensor tendon will expand to form a hood, which covers the back and sides of the head of the metacarpal and the proximal phalanx.
- ^ Blankenbaker, Donna G.; Davis, Kirkland W.; Sonin, Andrew; Crim, Julia R., eds. (2016-01-01), "Extensor Tendon Injury, Wrist and Fingers", Diagnostic Imaging: Musculoskeletal Trauma (Second Edition), Diagnostic Imaging, Elsevier, pp. 468–473, doi:10.1016/b978-0-323-39253-2.50118-x, ISBN 978-0-323-39253-2, retrieved 2021-01-04
- ^ "eMedicine - Hand, Tendon Lacerations: Extensors : Article by D Glynn Bolitho, MD, PhD, FACS". Retrieved 2008-01-20.[failed verification]