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The popliteus muscle in the leg is used for unlocking the knees when walking, by laterally rotating the femur on the tibia during the closed chain portion of the gait cycle (one with the foot in contact with the ground). In open chain movements (when the involved limb is not in contact with the ground), the popliteus muscle medially rotates the ...
the fibular bursa between the lateral (fibular) collateral ligament and the tendon of the biceps femoris; the fibulopopliteal bursa between the fibular collateral ligament and the tendon of the popliteus; and the subpopliteal recess (or bursa) between the tendon of the popliteus and the lateral condyle of the femur
Flexes lateral four digits; plantarflexes ankle; supports longitudinal arches of foot Popliteus muscle: Lateral surface of lateral condyle of femur and lateral meniscus: Animation. Posterior surface of tibia, superior to soleal line
With the popliteus (see above) as the single exception, all muscles in the leg are attached to the foot and, based on location, can be classified into an anterior and a posterior group separated from each other by the tibia, the fibula, and the interosseous membrane. In turn, these two groups can be subdivided into subgroups or layers—the ...
The knee is a modified hinge joint, a type of synovial joint, which is composed of three functional compartments: the patellofemoral articulation, consisting of the patella, or "kneecap", and the patellar groove on the front of the femur through which it slides; and the medial and lateral tibiofemoral articulations linking the femur, or thigh bone, with the tibia, the main bone of the lower ...
The suprapatellar bursa, the largest bursa, extends the joint space anteriorly and proximally. The subpopliteal recess and semimembranosus bursa are located posteriorly and are much smaller; The lateral and medial subtendinous bursae of gastrocnemius are located at the origin of the two heads of the gastrocnemius muscle. Non-communicating bursae:
Pes anserinus tendinitis/bursitis syndrome, or pes anserine bursitis, is a cause of chronic knee pain and weakness. [ 3 ] [ 4 ] It occurs when the medial portion of the knee is inflamed . If the bursa underlying the tendons of the sartorius , gracilis , and semitendinosus gets irritated from overuse or injury, a person can develop this ailment.
Immediately below its origin is the groove for the tendon of the popliteus. [citation needed]The greater part of its lateral surface is covered by the tendon of the biceps femoris; the tendon, however, divides at its insertion into two parts, which are separated by the ligament.