Tendonitis is an inflammation or irritation of a tendon, a cord-like structure that connects muscles to bones. There are hundreds of tendons located throughout the body. Tendonitis can occur in any part of the body in which tendons are located, but most often occurs in certain locations such as the elbow, shoulder (rotator cuff), wrist, knee, hip and ankle (Achilles tendon). Tendonitis typically causes pain due to inflammation and swelling. In some cases, a loss of mobility of the joint will occur due to excessive inflammation.
Trochanteric bursitis, also known as hip bursitis, is an inflammation of the bursa, the fluid filled sac that is situated between the greater trochanter (the bone located in the outside of the hip) and a tendon that passes over the bone within the hip joint. When the bursa becomes inflamed, it causes pain in the hip in the area over the upper thigh.
There are many types of arthritis, a condition that primarily causes inflammation, pain and limited mobility in the joints. Symptoms of arthritis are caused by a breakdown of cartilage surrounding the joint, which normally acts like a shock absorber and prevents bones from rubbing together. Some types of arthritis are a result of regular or excessive wear and tear on the joints and cartilage surrounding the joints, while others are a result of metabolic or immune system abnormalities, infections or injury. Each type of arthritis has slightly different symptoms, causes and treatments.
A hip sprain or strain involves an injury to the soft tissues of the hip area. Sprains involve injury to ligaments (the bands of tissue that connect bones together) within the joint and strains refer to injuries of muscles and tendons. The bones of the hip anchor muscles that travel down the leg, across the abdomen and into the buttocks and when sprains and strains occur in the hip area, they can lead to symptoms in other locations as well.