The (Extensor Expansion) receives insertion of :.Each compartment contains specific nerves, arteries and veins, muscles, and bony structures that with injury contribute to the unique clinical presentations in ACS. Two Lateral parts: inserted into the Base of Distal ph. There are four compartments in the lower leg and these include the anterior, lateral, superficial posterior and deep posterior compartments.Central part: inserted into the Base of Middle ph.a Fascial Expansion (Extensor Expansion) on the dorsum of each toe.Each tendon to the 2nd, 3rd & 4th toes is joined on its lateral side by a tendon of Extensor digitorumbrevis.The tendons of Extensor digitorumlongus pass to the lateral four toes.thickened to formInferior extensorretinaculum.Diagnosis is made with the presence of severe and progressive leg pain that worsens with passive ankle motion. It is very thin, but just distal to ankle joint, it is Leg Compartment Syndrome is a devastating lower extremity condition where the osseofascial compartment pressure rises to a level that decreases perfusion to the leg and may lead to irreversible muscle and neurovascular damage.deep to inferior peronealretinaculum, they have separate sheaths.Tendons of peronei are surrounded by a single common tubular synovial sheath,.Peroneal Retinacula Superior peroneal retinaculum Connects the lateral malleolus to calcaneum & holds the tendons of peroneus longus & brevis Inferior peroneal retinaculum Synovial Sheaths of Peroneal Longus & Brevis: PeroneusTertius, & Extensor Hallucis Longus Tibialis Anterior & Extensor DigitorumLongus Structures Passing Deep to Extensor Retinacula From medial to lateral: 1.Tom 2.Has 3.Very (vessels) 4.Nice ( nerve) 5.Dog & 6.Pigion Y-shaped band located inferior to ankle.Attached to anterior borders of tibia & fibula above ankle.A thickening of deep fascia that keeps the long tendons around ankle joint in position.It binds the two bones and provides attachment for muscles.įascial Compartments of Leg Together with the interosseus membrane, the septa divide the leg into (3) Compartments :1-Anterior 2-Lateral (peroneal) 3-Posterior Each has its own Muscles, Blood and Nervesupply. A thin & strong membrane, that binds the interosseous borders of tibia & fibula.Posterior border offibula(Posterior fascial septum).Anterior border of fibula(Anterior fascial septum).Pass from the deep aspect of this fascia to be attached to :.The deep fascia surrounds the leg and attached to Anterior & Medial borders of Tibia.OBJECTIVES At the end of the lecture, student should be able to Identify the deep fascia of leg Identify the fascial compartments of the leg Describe the anatomy of the anterior & lateral compartments List the contents of each compartment (muscles, vessels & nerves) Describe the anatomy and contents of the dorsum of the foot Severe damage to the nerve and blood vessels around a muscle can cause the muscle to die and amputation might be necessary.ANTERIOR, LATERAL COMPARTMENTS OF THE LEG & DORSUM OF THE FOOT Dr SAEED VOHRA Dr JAMILA EL MEDANY & If the pressure becomes great enough, blood flow to the muscle can be blocked, leading to a condition known as compartment syndrome. Blood vessels and nerves can also be affected by the pressure caused by any swelling in the leg. The thickness of the fascia can give problems when any inflammation present in the leg has little room to expand into. Due to the great pressure placed on the leg, from the column of blood from the heart to the feet, the fascia is very thick in order to support the leg muscles. The fascia also separates the skeletal muscles from the subcutaneous tissue. The septa are formed from the fascia which is made up of a strong type of connective tissue. Įach compartment contains connective tissue, nerves and blood vessels. The lower leg is divided into four compartments by the interosseous membrane of the leg, the anterior intermuscular septum, the transverse intermuscular septum and the posterior intermuscular septum.
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