What is a primary symptom associated with biceps tendonitis?

Biceps tendonitis is primarily characterized by pain experienced in the anterior shoulder region, particularly during activities that involve abduction and flexion of the shoulder. This condition often arises from overuse or repetitive stress on the biceps tendon, which becomes inflamed or irritated.

When the shoulder is abducted, particularly beyond 90 degrees, the position can effectively compress the biceps tendon against the structures in the shoulder joint, leading to increased pain. Patients often report discomfort when performing overhead activities or reaching out to the side, making pain during abduction a significant hallmark of biceps tendonitis.

Weakness in shoulder flexion and internal rotation may occur due to pain and guarding, but they are not primary symptoms. Similarly, swelling around the elbow joint is not typically associated with biceps tendonitis, as the pathology primarily affects the shoulder region, not the elbow.