Final answer:
The first step in musculoskeletal system assessment is to check for pain, which is pivotal for guiding further examination. Diseases like arthritis reveal why understanding joint and muscle function is vital in healthcare, and they highlight the importance of treatment options like joint replacement surgery.
Step-by-step explanation:
The first step in assessing the musculoskeletal system is to check for pain. Pain assessment helps to pinpoint areas of concern and can guide further examination, including checks for range of motion, muscle strength, and joint stability. Understanding the role of joints and muscles in the skeletal system is critical for diagnosing musculoskeletal disorders, which can be caused by malnutrition, and joint ailments like arthritis that hinder mobility. For example, joint replacement surgery, such as a total hip arthroplasty, is often necessary when a joint has been extensively damaged by conditions like osteoarthritis, the most common cause of hip disability. In rheumatoid arthritis, the body's immune system malfunctions and attacks the joints, leading to inflammation and pain. Musculoskeletal diseases like these underscore the importance of joint and muscle assessments within healthcare.