When assessing a client's range of motion, the nurse notes crepitation with movement of the left knee. Which information in the client's history is most likely related to this finding?

A. A history of a fractured patella could potentially cause crepitation if there were long-term damage or improper healing. However, it is more likely that crepitation is related to degenerative changes, such as osteoarthritis. B. Needle aspiration of the synovial space may have been performed to relieve fluid buildup or inflammation, but it would not directly explain the crepitation in the joint. Crepitation is more commonly seen in conditions that affect cartilage or joint surfaces. C. Crepitation following knee arthroplasty is possible if there are complications, but it is more likely due to arthritis or degenerative joint disease if the patient has not undergone surgery. Arthroplasty would usually be associated with reduced crepitation. D. Degenerative diseases, such as osteoarthritis, are the most likely cause of crepitation. As the cartilage wears away, the bone surfaces rub together, causing the characteristic crunching or grating sound when the joint is moved.