A nurse practitioner treating a patient with chronic/recurrent right biceps tendonitis should evaluate which of the following to aid in diagnosis after a reported "snapping" sensation?

Evaluating for the presence of a right upper arm bulge, commonly referred to as the "Popeye muscle," alongside assessing biceps strength, is crucial in diagnosing chronic or recurrent biceps tendonitis, especially following a reported "snapping" sensation. This symptom may suggest an acute or chronic rupture of the biceps tendon, particularly at the distal insertion, where significant abnormalities in muscle appearance and strength can be noted.

The term "Popeye muscle" describes the characteristic appearance of the biceps when the tendon has ruptured, as the muscle belly retracts and bulges outwards, similar to the cartoon character Popeye. This sign is indicative of a significant biceps injury and calls for focused physical examination to assess functional strength and integrity of the biceps muscle.

While other evaluations like range of motion and general strength in the shoulder can provide insights into the overall function of the shoulder joint and surrounding muscles, or assessing the radial pulse can help rule out vascular issues, they do not specifically target the biceps tendon pathology as effectively. Additionally, evaluating supination and pronation is important for assessing forearm motion but remains less specific to the concern of biceps tendonitis when "snapping" is reported. Hence, assessing for specific changes