what is the origin and insertion of quadratus lumborum?
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Quadratus lumborum originates from the iliolumbar ligament and iliac crest. It runs craniomedially, attaching to the inferior border of 12th rib and the transverse processes of the 1st to 4th lumbar vertebrae. All fibers together give the muscle a rectangular appearance.
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This muscle originates from the lateral supracondylar ridge, which is a raised ridge of bone that is located at the bottom of the humerus, right above the lateral epicondyle. This muscle then inserts onto the base of the 2nd metacarpal, which is the bone of the index finger that is located in the hand.
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It originates from the maxilla, attaching superolateral to the incisive fossa. Its fibers then course superomedially, expanding into a thin aponeurosis at the bridge of the nose. Via this aponeurosis, the muscle inserts at the dorsum of the nose by blending with its counterpart from the opposite side.
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Anatomy. The rectus femoris has its origin on the iliac spine of the hip bone. The other quadriceps muscles have their origins on the femur. ... All four quads insert on the patella (the kneecap) via the quadriceps tendon and on the tibial tuberosity via the patellar ligament.
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The vastus medialis muscle originates from a continuous line of attachment on the femur, which begins on the front and middle side (anteromedially) on the intertrochanteric line of the femur. ... The fibers converge onto the inner (medial) part of the quadriceps tendon and the inner (medial) border of the patella.
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Iliocostalis lumborum muscle originates from three points; lateral crest of sacrum, medial end of iliac crest and thoracolumbar fascia. It attaches to the angle of ribs 5-12, transverse processes of vertebrae L1-L4 and adjacent thoracolumbar fascia.
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Elbow bursitis occurs in the olecranon bursa, a thin, fluid-filled sac that is located at the boney tip of the elbow (the olecranon). There are many bursae located throughout the body that act as cushions between bones and soft tissues, such as skin.
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The gluteus minimus muscle originates from the gluteal surface of the ilium, between the anterior and inferior gluteal lines. The muscle fibers converge towards a narrow tendon that takes an anteroinferior course towards the femur. ... Finally, the tendon inserts onto the anterolateral aspect of the greater trochanter.
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It originates at the anterolateral iliac tubercle portion of the external lip of the iliac crest and inserts at the lateral condyle of the tibia at Gerdy's tubercle. ... The tensor fasciae latae effectively tightens the iliotibial band around the area of the knee.
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Vastus lateralis It originates via a broad aponeurosis from various sites on the femur, such as the proximal half of the intertrochanteric line, anterior and inferior borders of the greater trochanter, lateral lip of the gluteal tuberosity and proximal half of the lateral lip of linea aspera.
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The lateral head originates from the back surface of the humerus, just above the radial groove. The long head originates from the infraglenoid tubercle of the scapula.
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A gomphosis (“fastened with bolts”) is the specialized fibrous joint that anchors the root of a tooth into its bony socket within the maxillary bone (upper jaw) or mandible bone (lower jaw) of the skull. A gomphosis is also known as a peg-and-socket joint.
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Origin and insertion The rectus abdominis muscle is composed of a pair of vertically oriented muscles. ... The medial head originates from the pubic symphysis, interlacing with the fibres of the muscle on the contralateral side. It inserts onto the xiphoid process of the sternum and onto the costal cartilages of ribs 5-7.
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Origin and insertion Originating from the lateral surface of the spinous process of the axis (second cervical vertebra), obliquus capitis inferior passes in a superolateral direction to insert onto the posterior aspect of the transverse process of the atlas (first cervical vertebra).
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The sternal head originates from the manubrium sterni, while the clavicular head from the medial third of the clavicle. The insertion is the lateral surface of the mastoid process of the temporal bone and the lateral half of the superior nuchal line of the occipital bone.
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Introduction. The quadratus lumborum (QL) muscle resides in the deep and posterior, lateral and inferior areas of the spine, involving the iliac crest, the transverse processes of the lumbar vertebrae and the 12th rib. ... There is still no certainty that an abnormality of QL is the primary source of back pain.
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What causes quadratus lumborum pain? Pain in the quadratus lumborum can be due to overuse, stress, and strain. Sometimes muscles cause pain and stiffness when they're weak or too tight. Activities such as sitting for long periods of time can reduce blood flow to an area, especially in the QL and surrounding areas.