See below. Rhomboid muscle strains are treated conservatively (non-surgically). You will have to avoid any activity that makes the condition worse, which may involve temporarily changing your sport to one that does not involve using the strained muscles. The application of ice to the affected area will help to reduce inflammation and pain. Ice can be crushed in a bag, covered with a towel, and placed under the back when you lie down. You can apply ice every few hours for the first two or three days after the injury, and keep the ice in position for as long as is comfortable. After a couple of days of treating the area with ice, hot showers can often be an effective treatment for pain associated with rhomboid muscle strain. You can take over-the-counter NSAIDs (non-steroidal anti-inflammatory drugs) according to instructions, or your doctor may prescribe stronger medication if necessary. Examples of NSAIDs are ibuprofen (Advil), naproxen (Aleve) and aspirin. Massage can provide relief, and can be done at home quite easily by placing a tennis ball on the floor, lying down and rolling the ball under the rhomboid muscles. Physical therapy in the form of exercises will be recommended. You will be advised when it is safe to start performing the exercises. Go carefully and do not continue to exercise if you are finding it painful. When you are able to move your arms and shoulders without pain, you can resume your normal activities. Recovery times depend on the individual, but the sooner you start treatment after the injury, the shorter the recovery time will be.