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    WebMD Symptom Checker

    Joint instability, Tenderness to touch and Unable to bear weight

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms joint instability, tenderness to touch and unable to bear weight including Osteoarthritis, ACL knee injury, and Hematoma.

    There are 10 conditions associated with joint instability, tenderness to touch and unable to bear weight. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

    • Osteoarthritis

      Osteoarthritis happens when the cartilage in your joints breaks down causing pain, stiffness, and swelling.

    • ACL knee injury

      An ACL injury happens when you tear or overstretch the anterior collateral ligament on the inside of the knee.

    • Hematoma

      A hematoma is a collection of blood in the tissue outside of a damaged blood vessel, usually after an injury.

    • Tendinitis

      Tendinitis symptoms include muscle and tendon pain or stiffness close to a joint, and pain with movement.

    • Bursitis (anserine)

      Anserine bursitis is a swelling of the bursa at the inside of the knee and causes pain, redness and stiffness.

    • Cellulitis

      Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm.

    • Dislocated knee

      Symptoms of knee or kneecap dislocations include pain and swelling in the knee, stiffness, and deformity.

    • Abscess

      A skin abscess, or boil, is a swollen, painful, red and warm lump of skin that may rupture and drain pus.

    • Bruise or contusion

      Bruises, or contusions, cause skin discoloration, swelling and tenderness.

    • Posterior cruciate ligament (PCL) injury

      A posterior cruciate ligament injury causes pain, swelling, weakness and instability of the knee.

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