Medial and lateral malleolus

The superior aspect of the talus articulates against the inferior aspect of the tibia. Eversion Plantar flexion The tendon goes under the foot from the lateral to the medial surface thus aiding in support for the transverse arch.

The medial aspect of the lateral malleolus articulates with the lateral surface of the talus while the lateral aspect of the medial malleolus articulates with the medial side of the talus.

Medial and lateral malleolus. The medial malleolus and lateral malleolus are bones located in the lower part of your extremities. The medial malleolus is formed by the lower part of your tibia and makes up the inner side of the ankle. The lateral malleolus is formed by the lower section of.

Any fracture involving the most distal portions of the fibula or tibia commonly known as the lateral and medial malleoli respectively Synonyms. The Acutrak Advantage in Medial Lateral Malleolus Fracture Fixation Released in 1994 the original Acutrak Headless Compression Screw was the first fully-threaded headless compression screw with continuously variable thread pitch on the market. The medial malleolus extends distally to approximately onethird of the height of the talus whereas the lateral malleolus extends distally to approximately two-thirds the height of the talus.

The fibrous capsule of the ankle joint is relatively thin on its anterior and posterior aspects. A medial malleolus fracture is a break in the tibia at the inside of the lower leg. Fractures can occur at different levels of the medial malleolus.

Medial malleolar fractures often occur with a fracture of the fibula lateral malleolus a fracture of the back of the tibia posterior malleolus. The lateral malleolus of the fibula is positioned more distally and posteriorly than the medial malleolus of the tibia. The malleoli of the tibia and fibula together with the inferior transverse tibiofibular ligament form a rectangular socket mortise into which the trochlea of the talus fits into.

The medial malleolus is the largest of the three bone segments that form your ankle. The other two are the lateral and the posterior malleolus. When a medial malleolus fracture occurs by itself.

Passes posterior to lateral malleolus. Eversion Plantar flexion The tendon goes under the foot from the lateral to the medial surface thus aiding in support for the transverse arch. The medial side of the joint is quite rigid because the medial malleolus - unlike the lateral malleolus - is attached to the tibia and the medial collateral ligaments are very strong.

On the lateral side there is a flexible support by the fibula syndesmosis and lateral collateral ligaments. Small well corticated bony fragments lies at the anterior aspect of the medial malleolus. Marked soft tissue swelling over the lateral malleolus with a small bony fragment and increased lucency at the tip which is suspicious for an avulsion fracture.

The medial aspect of the lateral malleolus articulates with the lateral surface of the talus while the lateral aspect of the medial malleolus articulates with the medial side of the talus. The superior aspect of the talus articulates against the inferior aspect of the tibia. Os subfibulare occurs in 1 of children but usually fuses by adulthood.

Shape of ossicle as well as normal size and configuration of adjacent lateral malleolus help to distinguish ossicle from nonunited fracture. Medial malleolus anterior colliculus. Medial malleolus posterior colliculus.

Some fractures of the medial malleolus may not be apparent on the AP and lateral views but are readily visible on the internal oblique projection. The AP view Figure 11-1 A shows the ankle mortise. However the lateral margin of the talus and lateral portions of the joint are obscured by the underlying lateral malleolus.

Structure and Function of the Ankle and Foot. The medial malleolus is the medial projection of bone from the distal tibia. The lateral malleolus projects laterally from the distal fibula Fig.

Both malleoli serve as the proximal attachments for the collateral ligaments of. If the lateral injury involves an avulsion fracture of the tip of the lateral malleolus with a medial malleolar fracture oblique or vertical this is classified as an AOOTA 44A22 fracture. Complete radiological evaluation AP lateral and AP with internal rotation is crucial for.

Sically refer to malleolar injuries. The distal fibula or lateral malleolus the distal medial tibia or medial malleolus and the posterior distal tibia or posterior malleolus. Fractures that involve multiple sides are referred to as bimalleolar or trimalleolar.

The injury may also involve the deltoid liga-. We will start by looking at the medial side of the ankle and identify the. Structures passing anterior to the medial malleolus tendon of the tibialis anterior.

Structures passing posterior to the medial malleolus pneumonicTom Dick Harry tibialis posterior T flexor digitorum longus D flexor hallucis longus H. Pattern 1 Lateral fibular buttress infrasyndesmotic adduction mechanism of injury The medial malleolus has been pushed off by the adducting talus. The traction fracture of the lateral malleolus or the osseo-ligamentous injury has left a lateral fibular buttress.

The lateral malleolus is a bony prominence on the fibula one of the long bones that makes up the lower leg. The fibula is the narrowest of the long bones situated on the outside of the leg with this prominence creating the distinctive bump on the outside of the ankle. It is frequently involved in ankle fractures.