Contractures are a condition where muscles or tendons become tight and stiff. They can occur due to a variety of reasons, such as prolonged immobilization, disease, or injury. Synonyms for contracture include tightness, stiffness, rigidity, limited range of motion, immobility, and inflexibility. The term "frozen shoulder" is often used to describe contractures in the shoulder joint. Other synonyms for contractures include muscle spasms or cramps, joint contractures, and postural abnormalities. People who suffer from these conditions may experience discomfort, pain, or disability. Treatment may involve physical therapy, stretching, medication, surgery, or other interventions aimed at improving mobility and restoring function to affected areas.