calcaneofibular ligament

(redirected from ligamentum calcaneofibulare)

cal·ca·ne·o·fib·u·lar lig·a·ment

[TA]
the middle of the three fascicles that form the lateral ligament of the ankle joint, reinforcing the lateral side of the ankle joint and resisting excessive inversion of the foot; the remaining two ligaments of the lateral ligaments are the anterior and posterior talofibular ligaments.
Synonym(s): ligamentum calcaneofibulare [TA]

calcaneofibular ligament

The narrow rounded middle fascicle of the 3-part lateral ankle ligament, which counters excess foot inversion. It courses from the apex of the fibular malleolus inferoposteriorly to a tubercle on the lateral calcaneus. Sprains cause 85% of ankle injuries, of which 85% are inversion injuries involving the lateral ligaments, primarily the anterior talofibular ligament, closely followed by the calcaneofibular ligament.
 
Management
RICE—rest, ice, compression, and elevation—are the mainstays of early management; surgery for grade-III sprains, especially for young professional athletes.

calcaneofibular ligament

Abbreviation: CFL
An extracapsular ligament of the lateral ankle joint. The calcaneofibular ligament originates from the inferior apex of the lateral malleolus and courses at approximately a 133° angle to attach to the calcaneus. It is the primary restraint against talar inversion when the ankle is in its neutral position.
See also: ligament

calcaneofibular ligament

; CFL extra-capsular, cord-like ligament crossing ankle and subtalar joints; originates at distal inferior surface of fibula and inserts into tubercle on lateral aspect of calcaneum, deep to the peroneal tendons; strongly resists calcaneal inversion (see Table 1)
Table 1: Classification of ankle ligament inversion injuries
TypeCharacteristics of the injury to the ankle ligament
Grade IHistory of mild inversion injury
Overstretching of lateral collateral ligament + microscopic tears of ATFL fibres
Stable ankle joint but some restriction in range of motion/weight-bearing
Mild local swelling without bruising/ecchymosis along lateral border of ankle
Pinpoint area of tenderness overlying area of ligament injury
Grade IIHistory of moderate inversion injury
Complete tear of ATFL and partial tear of CFL
Mild/moderate ankle instability with restricted range of motion
Moderate swelling over anterior lateral aspect of ankle with marked soft-tissue bruising/ecchymosis or haemorrhage in area of injury
Marked pain on direct palpation of ATFL
Grade IIIHistory of severe inversion injury
Complete tear of ATFL, CFL and underlying joint capsule
Marked instability and laxity of ankle with positive anterior drawer test, talar inversion tilt and inability to evert foot at subtalar joint
Severe swelling along lateral border of ankle and heel with marked haemorrhage and ecchymosis
Discrete pain and tenderness of soft tissues overlying ATFL, CFL and anterolateral joint capsule

ATFL, anterior talofibular ligament; CFL, calcaneofibular ligament.

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