Glossary

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Joint
The area of articulation of two or more bones that allows various types of motion, while some motion is practically non-existent.

Joint Stability
The resistance to displacement of the bones that make the joint. Five factors provide joint stability: (1) The shape of the bony structure. (2) Ligamentous Arrangement. (3) Fascia or Fibrous Connective Tissue. (4) Atmospheric Pressure. (5) Muscle Arrangement, Strength and Strength Balance.

Jumper's Knee
Patellar Tendinitis -- prevalent in jumping sports (basketball, volleyball and weightlifting where squatting is involved). This is an inflammation of the tendon that connects the tibia to the patella. The caudal (head) side of the patellar tendon connects to the powerful quadriceps muscle. Onset is usually gradual and worsens with overuse.

Jumping-Power Tests
Tests to measure leg power are sometimes a part of fitness or athletic evaluations. The short amount of time of these tests probably does not actually correlate with anaerobic power capacity. Two common tests are the Sargent Jump-and-Reach Test and the Standing Broad Jump.

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