Final answer:
When symptoms are reproduced during active RoM but not during PRoM, it usually implicates the muscles or tendons that are being engaged by the patient. Tests like MRI, ultrasound, or EMG may be ordered to diagnose the specific problem with the musculoskeletal or neuromuscular system.
Step-by-step explanation:
If the symptoms of a patient are reproduced during active range of motion (RoM) and are not reproduced during passive range of motion (PRoM), this typically suggests that the issue may be with the muscles or tendons that the patient is activating themselves, rather than the joints or ligaments. During active RoM, the patient is actively using their muscles to move the joint, whereas passive RoM involves the clinician moving the joint and the patient's muscles are not actively engaged.
Given this information, the possible implicated structures are the muscles and tendons responsible for the movement of the joint. It is also possible that the issue could be neuromuscular, involving the nerves that supply the muscles. In some cases, the problem could even originate from the central nervous system, depending on the pattern of weakness or symptom reproduction.
To diagnose the issue more precisely, a healthcare provider might order tests such as an MRI or an ultrasound to look at the soft tissues, electromyography (EMG) to test muscle activity, or nerve conduction studies to evaluate the health of the peripheral nerves. These tests help in identifying any musculoskeletal abnormalities, such as strains, tears, or other injuries to the muscles or tendons, as well as any neuromuscular issues that could explain the symptoms.