ANKLE LIGAMENTS

ANKLE LIGAMENTS

Two joints within ankle Joint:

  • Ankle joint
  • Distal tibiofibular Joint

 

 

ANKLE JOINT 

 

consists of

  • Tibial plafond
  • medial malleolus
  • lateral malleolus
  • talus

 

MOVEMENTS: 

  • Ankle mortise widens when ankle goes from plantar to dorsiflexion

 

Main Motion  

Plantar flexion

Dorsiflexion

 

Secondary Motions

Inversion/eversion

Rotation

5 times body weight with walking on level surfaces

 

 

DISTAL TIBIOFIBULAR JOINT

consists of

Distal fibula

Incisura fibularis  

Concave surface of distal lateral tibia

 

MOVEMENTS

fibula rotates within incisura during gait

syndesmosis screws limit external rotation

 

 

Primary ligaments of ankle include:

Medial:

Deltoid ligament

Calcaneonavicular ligament (Spring Ligament)

Fig: Deltoid Ligament

Lateral Ligaments:

Syndesmosis (includes AITFL, PITFL, TTFL, IOL, ITL)

Anterior talofibular ligament (ATFL)

Posterior talofibular ligament (PTFL)

Calcaneal fibular ligament (CFL)

Lateral talocalcaneal ligament (LTCL)

 

 

Ankle ligaments

ATFL