How rotator cuff injuries occur

The world's top tennis player, Novak Djokovic, heads to Flushing Meadows for the US Open this week. Despite his recent dominance, he has complained of a shoulder injury over the past weeks. Shoulder injuries are common in tennis because the sport involves consistent rotation of the arm. This makes the bursa and rotator cuff rub against the shoulder bone, causing inflammation and pain. Source: WebMD, Orthoinfo, Orthogate