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The ischial tuberosity (or tuberosity of the ischium, tuber ischiadicum), also known colloquially as the sit bones or sitz bones, [1] or as a pair the sitting bones, [2] is a large posterior bony protuberance on the superior ramus of the ischium. It marks the lateral boundary of the pelvic outlet.
The soleal line marks the lower limit of the insertion of the popliteus muscle. [2] It is the attachment of the fascia covering this muscle. It is the origin of part of soleus muscle (along with a triangular area above it), [3] flexor digitorum longus muscle, and tibialis posterior muscle.
Upper surface of right tibia. (Anterior is at top.) ... It is the site of insertion for the semimembranosus muscle. See also ... Bones of the right leg. Posterior ...
The quadriceps muscles consist of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. These quadriceps muscles are innervated by the femoral nerve. [ 1 ] The tibial tuberosity thus forms the terminal part of the large structure that acts as a lever to extend the knee-joint and prevents the knee from collapsing when ...
The bone or other structure the muscle is attached to that remains immobile during the action. The term "bone" is omitted from bone names. Insertion The attachment point of the muscle, on a bone or otherwise, that moves during the action. Artery The artery which supplies the muscle with blood. The term "artery" is included to avoid confusing ...
The major bones of the leg are the femur (thigh bone), tibia (shin bone), and adjacent fibula, and these are all long bones. The patella (kneecap) is the sesamoid bone in front of the knee . Most of the leg skeleton has bony prominences and margins that can be palpated and some serve as anatomical landmarks that define the extent of the leg.
The sartorius muscle originates from the anterior superior iliac spine, [4] and part of the notch between the anterior superior iliac spine and anterior inferior iliac spine. It runs obliquely across the upper and anterior part of the thigh in an inferomedial direction. [3] It passes behind the medial condyle of the femur to end in a tendon.
A small part of bone with a piece of a tendon or ligament attached is avulsed (torn away). [3] Ischial bursitis (also known as weaver's bottom) is inflammation of the synovial bursa located between the gluteus maximus muscle and the ischial tuberosity, [4] and is usually caused by prolonged sitting on a hard surface.