retinaculum

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retinaculum

 [ret″ĭ-nak´u-lum]
a structure that retains an organ or tissue in place.
flexor retinaculum of hand a fibrous band forming the carpal tunnel, through which pass the tendons of the flexor muscles of the hand and fingers.
retinaculum morga´gni a ridge formed by the coming together of segments of the ileocecal valve.
retinaculum ten´dinum a tendinous restraining structure, such as an annular ligament.

ret·i·nac·u·lum

, gen.

ret·i·nac·u·li

, pl.

ret·i·nac·u·la

(ret'i-nak'yū-lŭm, -lī, -lă), [TA]
A frenulum, or a retaining band or ligament.
[L. a band, a halter, fr. retineo, to hold back]

retinaculum

/ret·i·nac·u·lum/ (ret″ĭ-nak´u-lum) pl. retina´cula   [L.]
1. a structure that retains an organ or tissue in place.
2. an instrument for retracting tissues during surgery.

extensor retinaculum of foot, inferior  a thickened band of the crural fascia passing from each malleolus across the front of the ankle joint, there crossing the other and passing onto the dorsum of the foot.
extensor retinaculum of foot, superior  the thickened lower portion of the fascia on the front of the leg, attached to the tibia on one side and the fibula on the other, and holding in place the extensor tendons that pass beneath it.
extensor retinaculum of hand  the distal part of the antebrachial fascia, overlying the extensor tendons.
fibular retinaculum, inferior  inferior peroneal r.
fibular retinaculum, superior  superior peroneal r.
flexor retinaculum of foot  a strong band of fascia that extends from the medial malleolus down onto the calcaneus, holding in place the tendons of the posterior tibial and flexor muscles as they pass to the sole of the foot, and protecting the posterior tibial vessels and tibial nerve.
flexor retinaculum of hand  a fibrous band forming the carpal canal through which pass the tendons of the flexor muscles of the hand and fingers.
peroneal retinaculum, inferior  a fibrous band that arches over the tendons of the peroneal muscles and holds them in position on the lateral side of the calcaneus.
peroneal retinaculum, superior  a fibrous band that arches over the tendons of the peroneal muscles and helps to hold them in place below and behind the lateral malleolus.
retinaculum ten´dinum  a tendinous restraining structure, such as an annular ligament.

retinaculum

(rĕt′n-ăk′yə-ləm)
n. pl. retinacu·la (-lə) Biology
A band or bandlike structure that holds an organ or a part in place.

ret′i·nac′u·lar (-lər) adj.

retinaculum

[ret′inak′yələm] pl. retinacula
Etymology: L, halter
1 a structure that retains an organ or tissue.
2 an instrument for retracting tissues during surgery.

ret·i·nac·u·lum

, pl. retinacula (ret'i-nak'yū-lŭm, -lă) [TA]
A frenum, or a retaining band or ligament.
[L. a band, a halter, fr. retineo, to hold back]

retinaculum

A fibrous band, strap or ligament that holds another part in place. The flexor retinaculum prevents the flexor tendons from springing away from the front of the wrist when it is bent.

retinaculum

  1. a hook-like structure on the forewings of moths that contacts the bristlelike frenulum on the hindwing, thus linking the two.
  2. the hook-like structure that retains the springing organ (furcula) in Collembola.

retinaculum

pl. retinacula [L.]
1. a structure that retains an organ or tissue in place.
2. an instrument for retracting tissues during surgery.

carpal retinaculum
a superficial transverse ligament passing obliquely across the palmar aspect of the carpus, completing the carpal tunnel.
hock retinaculum
one of three transverse ligamentous bands across the dorsal aspect of the hock, holding the digital extensor tendons in place.
retinaculum morgagni
a ridge formed by the coming together of segments of the ileocecal valve. Called also frenulum of ileocecal valve.
patellar retinaculum
medial and lateral patellar ligaments.
retinaculum tendinum
a tendinous restraining structure, such as an annular ligament.