Body Parts Involved-

• Cartilage at the top of the tibia that normally cushions force to the knee.
• Knee joint.
• Ligaments that lend stability to the knee.
• Soft tissue that includes, nerves, tendons, ligaments, muscles, and blood vessels, lymph vessels and bursae of the knee joint.

• Pain and tenderness in the knee, especially when bearing weight.
• Locking of the knee joint.
• "Giving way" of the knee.
• "Water" on the knee (sometimes.)

• Direct blow to the knee.
• Prolonged overuse of an injured knee.
• Twisting or violent muscle contraction.

• Engage in vigorous pre-sport strengthening and conditioning.
• Avoid concrete or asphalt surfaces and other rigid surfaces.
• Warm up adequately before practice or competition.
• Tape the knee before practice or competition if you have had a previous knee injury.

• Prolonged disability, knee instability and pain without surgery.
• Arthritic changes in later years.
• Proneness to repeated knee injury.
• Postoperative complications, including: Bleeding, surgical-wound infection and slow healing.

First Aid-

• Follow instructions for R.I.C.E
• Keep the injured person warm to prevent shock.
• Immobilize the knee before transporting the injured person to an emergency facility or doctor's office.

Rehabilitation:

• Begin with non-weight bearing exercises after surgery.
• Begin normal rehab exercise when movement is comfortable.