annular ligament

noun

Medical Definition of annular ligament

: a ringlike ligament or band of fibrous tissue encircling a part:
a : any of the transverse bands holding in place the extensor and flexor tendons of the wrist and ankle
b : a strong band of fibers surrounding the head of the radius and retaining it in the radial notch of the ulna

called also orbicular ligament

c : any of several strengthening bands of the tendon sheaths of the digits
d : a ring attaching the base of the stapes to the oval window

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