Final answer:
Option c is the correct answer. Bursitis causes pain due to the inflammation of a synovial membrane sac at friction sites near joints, leading to swelling and tenderness. Treatment options vary depending on the cause of the inflammation and can include antibiotics, NSAIDs, or corticosteroids.
Step-by-step explanation:
The athlete coming to the clinic with bursitis is experiencing pain due to inflammation of the synovial membrane sac at friction sites. Bursitis is a condition where a bursa near a joint becomes inflamed, leading to pain, swelling, or tenderness, and could result in joint stiffness. The condition is not caused by the tearing of a ligament, stretching of muscle and fascia sheath, or incomplete separation of articular surfaces of the joint due to ligament injury, but rather by inflammation in one of the many fluid-filled sacs that cushion joints, muscles, or tendons where they slide across bone. Treatments may include antibiotics if caused by an infection, or anti-inflammatory agents like NSAIDs or corticosteroids for cases due to trauma or overuse. In chronic cases, draining fluid from the bursa might be necessary, though additional surgery is usually not required.