Posterior intermuscular septum of leg

Looks like

A sheet of fascia between the outer (fibular) and back compartments of the lower leg, attached to the fibula.

What it does

Separates the fibularis muscles from the calf muscles.

Keeping it well

Relevant when surgeons open leg compartments to relieve pressure.

Related conditions

• Achilles tendon rupture
• Chronic venous insufficiency
• Compartment syndrome
• Growing pains
• Lymphangitis
• Lymphatic filariasis (elephantiasis)
• Lymphoedema
• Restless legs syndrome
• Superficial thrombophlebitis
• Varicose veins
• Venomous snakebite