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Knee

Anterior Cruciate Ligament (ACL).
A primary stabilizing ligament within the center of the knee joint that prevents hyperextension and excessive rotation of the joint.
Baker’s Cyst.
Localized swelling of a bursa sac in the posterior knee. A Baker’s Cyst indicates that there is trauma inside the knee joint.
Chondromalacia.
Roughening of the articular cartilage. Best known for roughening on the underside of the patella, which can occur in any patellofemoral injury.
Derotation Brace.
A customized knee brace worn by players with a history of rotational instability of the knee.
Femur.
Thighbone; longest bone in the body.
Fibula.
Smaller of the two bones in the lower leg; it runs from the knee to the ankle along the outside of the lower leg.
Hamstring.
Group of muscles that run from the buttocks to the knee along the back of the thigh. The hamstring muscles work to flex the knee and extend the hip and are often injured as a result of improper conditioning or lack of flexibility.
Iliotibial Band.
A thick, wide fascial layer that runs from the iliac crest to the knee joint that is occasionally inflamed as a result of excessive running.
Jumper’s Knee.
Inflammation of the patellar ligament associated with overuse of the knee from jumping and running.
Lateral Collateral Ligament.
Ligament on the lateral aspect of the knee that connects the femur to the fibula and provides lateral stability to the joint.
Medial Collateral Ligament.
Ligament on the medial aspect of the knee that connects the femur to the tibia and provides medial stability to the joint.
Meniscectomy.
An intra-articular surgical procedure of the knee by which all or part of the damaged meniscus is removed.
Meniscus.
Crescent-shaped cartilage located within the knee that works to absorb weight and provide stability.
Patella.
The kneecap. The patella functions to protect the distal end of the femur as well as to increase the mechanical advantage and force-generating capacities of the quadriceps muscle group.
Patella Tendinitis.
Inflammation of the patellar ligament; also know as jumper’s knee.
Patellofemoral Joint.
Articulation of the kneecap and femur. Inflammation of this joint can lead to chondromalacia and is caused by an acute injury to the patella, excessive running, chronic wear and tear of the knee or poor foot mechanics.
Plica.
Fold of tissue in the joint capsule.
Posterior Cruciate Ligament.
A primary stabilizing ligament of the knee that prevents backward displacement of the tibia.
Q-Angle.
Normal angle of quadriceps relative to the patella. The normal angle for males is 10 degrees.
Quadricep Muscles.
A group of four muscles in the thigh that works to extend the knee.
Tibia.
Larger of the two bones of the lower leg and the weight-bearing bone of the shin; it runs medially to the fibula.
Fast Facts
  • NBATA records indicate that during the course of a regular season, more playing time will be lost because of inflammation of the knee, patella and patellar tendon, than from any other injury.