Research Results For 'Patella'

BICEPS FEMORIS TENDON

The biceps femoris tendon connects the patella to the femur. It is responsible for extension of the knee joint and is given its name because it features two muscular heads, one at the femur and one at the patella.
Research Biceps Femoris Tendon

KNEE JOINT

The knee joint is the hinge-like synovial joint formed by the lower end of the femur, the upper ends of the tibia and fibula, and the patella. The patella is connected to the joint by the medial and patellar retinaculum ligaments and to the tuberosity of the tibia by the patellar ligament. The knee is a joint which is subjected to tremendous lateral stress during normal activity and is guarded by a number of transverse and cruciate ligaments to help lend it support. Even so, however, the increased stresses placed upon this joint during extreme athletic activity (for example, in football, basketball, or tennis) which require the competitor to alter direction rapidly, the knee often bears the brunt of intolerable shearing force. Such incidences often result in torn ligaments within the knee which require corrective surgery.
Research Knee Joint

PATELLA

The patella (kneecap) is a small bone of the knee joint which resembles an inverted teardrop. The patella is connected to the joint by the medial and patellar retinaculum ligaments and to the tuberosity of the tibia by the patellar ligament.
Research Patella

RECTUS FEMORIS

The rectus femoris is one of the four bellies of the quadriceps muscle group. The quadriceps muscle group consists of four muscles: the rectus femoris, the vastus lateralis, the vastus intermedius, and the vastus medialis. The rectus femoris is a large fleshy mass that originates at the back of the inferior iliac spine and covers the front and sides of the femur. It inserts in the top of the patella. This muscle is innervated by the femoral nerve and supplied by the circumflex artery. The quadricep muscles work together as the primary extensor of the knee. The rectus femoris is the only two- joint muscle in the group, crossing both the knee and the hip joint. This long, flat muscle extends the leg at the knee joint and flexes the thigh at the hip joint. When the rectus femoris is contracted, the knee joint is straightened and the lower leg is extended. When it is relaxed, the lower leg is flexed.
Research Rectus Femoris

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