tibio fibular joints
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Tibiofibular Joints
Tibiofibular Joint•Introduction
•Relatively immobile structure•Joins the two shin bones; the tibia (outer)
and the fibula (inner)•Separated into two parts•The Superior tibiofibular (Proximal or upper
joint) just below the knee•The Inferior tibiofibular (Distal or ankle
joint) which lies above the ankle joint
Tibiofibular Joints•Introduction
•Function is to limit the movement between the two shin bones caused in particular by twisting movements of the leg
•Composed of strong ligamentous bands that pass diagonally between the tibia and fibula bones
Tibiofibular Joints•Two in number,• present between the opposing surfaces of
the extremities of Tibia and Fibula•Fibula forms a lateral support for the
ankle joint and is not required to have any independent movement
•Provide a certain amount of elasticity•Are highly gliding
Tibiofibular Joints
Tibiofibular Joints•Superior Tibiofibular Joint•Formed between the small oval facet on
the inner surface on the head of the fibula•And the facet on the posterior part of the
external tuberosity of the tibia•Surrounded by a capsule•And several strengthening ligaments
Superior Tibiofibular Joints
Inferior Tibiofibular Joints•Synonyms•Distal Tibiofibular Joint•Ankle syndesmoses
•Proximal Component•Concave facet of the distal tibia
•Distal Component•Convex component of the distal fibula
Inferior Tibiofibular Joints
Inferior Tibiofibular Joint•Type of Joint•Syndesmoses rather than synovial joint
•Motion•Anterolateral glide with dorsiflexion•Posteromedial glide with ankle
planterflexion
Tibiofibular Joints•Anterior Inferior Tibiofibular
Ligament
•A strong band of fibres attached to the front of the lower end of the tibia and outer malleolus
•Posterior Anterior Tibiofibular Ligament
A strong band of fibres attached to the lower end of the tibia on the outer mallealus on the posterior aspect of bones
Tibiofibular Joints•Tranverse Inferior Tibiofibular
Ligament
•Attached to the posterior inferior border of the tibia and the pit or fossa on the posterior part of the inner surface of the external malleolus
Tibiofibular Joints• Interosseus Membrane
• Attached to the interosseus borders• May be considered an accessory ligament to
these joints• Joints the inferio tibular joints below• May join the inferio-tibular joint above• But there is always an opening in the upper part
for the anterior tibial vessels• Fibers are mainly directed downwards and
outwards
Tibiofibular Joints•Interosseus Membrane
•Connects the opposing surfaces•Is continuous above the interosseus
membrane•Attached in front and behind to the
ligaments
Tibiofibular Joints•Synovial Membrane
•Lines the joint cavity•Is continuous with that of ankle joint
Clinical Significance •Proximal Tibiofibular Joints Ganglion
Cysts
•Are rare entities that can cause disability•Excision remains the main surgical
treatment•Cyst recurrance has been a problem•Proximal tibiofibular joint arthrodesis
appears to be a more effective surgical option after a recurrance
Clinical Significance•Proximal Tibiofibular Joint
Dislocation
•Occurs most commonly when the athlete sustains an impact or falls with their knee in a fully flexed position with their foot pointing inwards (inversion) and downwards
•This puts added strain on the muscles which connect fibula to the foot and toes such as the peroneal muscles
Clinical Significance•Proximal Tibiofibular Joint
Dislocation
•In this position the tibia is pulled forwards
•And if the force is sufficient it may cause the joint to become dislocated
•This injury should be treated quite seriously as it may sometimes be associated with injury to the peroneal nerve
Inferior Tibiofibular Joint (AP)
Inferior Tibiofibular Joint (PA)