The musculature of the lower leg is arranged anatomically and functionally in three compartments (Fig. 12-6): anterior (extensor), lateral (fibular or peroneal), and posterior (flexor). The compartments are separated by fascial septa. The anterior compartment contains four flexor muscles. The lateral compartment includes two muscles. The posterior or flexor compartment contains muscles that are arranged in superficial and deep groups (Table 12-3). It is very important for practitioners to understand the structure of the compartments when treating compartment syndrome.
A muscle group that is very important for jumping and running is the triceps surae. This muscle has three parts: the gastrocnemius, with its two heads of origin (one from each of the femoral condyles), and the soleus. Together these three parts converge into the Achilles tendon, which is inserted into the calcaneus. The gastrocnemius flexes both the knee and the ankle so that the body can be raised on its toes (plantar flexion). The soleus muscle acts only on the ankle joint.
Was this article helpful?
Everything you wanted to know about. How To Cure Tennis Elbow. Are you an athlete who suffers from tennis elbow? Contrary to popular opinion, most people who suffer from tennis elbow do not even play tennis. They get this condition, which is a torn tendon in the elbow, from the strain of using the same motions with the arm, repeatedly. If you have tennis elbow, you understand how the pain can disrupt your day.