Adhesive capsulitis, commonly known as frozen shoulder is a condition that causes severe stiffness, pain and loss of movement. It is usually spontaneous in nature, which progressively worsens, leading to disability that affects activities of daily living, work and leisure.
Osteoarthritis (or OA, for short) is a chronic condition that affects various joints of the body. In OA, the cartilage that covers the ends of bones breaks down over time, leading to direct contact of the adjacent bones. This may cause pain, swelling, and loss of motion over time.
The patellar tendon is a strong piece of tissue that attaches to the bottom of the kneecap (patella) to the top and front of the shin bone (tibia). Its job is to transmit forces generated by large quadricep muscles groups to the shin bone, which straightens your leg.