retinaculum (plural: retinacula)

(redirected from flexor retinaculum)
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Related to flexor retinaculum: extensor retinaculum

retinaculum (plural: retinacula)

restraining band of fibrous tissue
  • extensor retinaculum bands of thick, fibrous tissue within superficial fascia, at anterior ankle area (subdivided into superior and inferior extensor retinacula) overlying the extensor (dorsiflexor) tendons and synovial sheaths of the extrinsic musculature (i.e. tibialis anterior, extensor hallucis longus, extensor digitorum longus, peroneus tertius)

  • flexor retinaculum bands of thick fibrous tissue within deep fascia, at posterior ankle area, overlying the plantarflexor tendons and synovial sheaths of the extrinsic musculature (i.e. gastrocnemius, soleus, plantaris, tibialis posterior, flexor hallucis longus, flexor digitorum longus, peroneus longus, peroneus brevis); flexor retinaculum is continuous proximally with deep fascia of leg, and distally with deep fascia of the sole, acting as a point of origin of abductor hallucis

References in periodicals archive ?
Next, using a superficial to deep pecking motion, starting with the needle almost completely perpendicular to the skin at the entry point, and with the needle bevel turned to be in the sagittal plane, taking care to keep the needle inserted at the entry point, a series of about 150 perforations of the flexor retinaculum was made using ultrasound to visualize the needle tip to insure that the tip perforated the retinaculum on each pass, and did not contact the median nerve.
To current blind injection, our technique adds direct visual guidance under ultrasound, actual separation of the median nerve from the compressing flexor retinaculum throughout the carpal tunnel by hydrodissection, and mechanical partial disruption of the retinaculum to decrease wall tension-generated compression on the nerve.
Bowing of the flexor retinaculum was high only in 2% of the patients.
5 BFR 2/100 2 >3:5 mm CARUJ: Median nerve cross-sectional area at the radioulnar joint level, MNAP: Median nerve cross-sectional area at the level of the pisiform, MNAH: Median nerve cross-sectional area at the level of the hamate hook, FRRU: Flattening ratio at the radioulnar joint level, FRP: Flattening ratio at the level of the pisiform, FRH: Flattening ratio at the level of the hamate hook, MNSR: Median nerve swelling ratio, BFR: Bowing of the flexor retinaculum Table 4.