What are the most common sports injuries? Here are some common injuries experienced by sports enthusiasts: BLISTERS Lesions on the skin that are similar to a burn that is usually caused by repeated or excessive friction. Blisters are often located on the feet and hands. MUSCLE ACHES Non-specific muscle pain that is usually not serious sometimes associated to significant physical effort, especially when returning to training. MUSCLE CRAMPS Painful, involuntary, and usually transient contractions to one or several muscles at rest or during effort. PULLED MUSCLE OR MUSCLE STRAIN Overstretched muscle (e.g., thigh or calf). A pulled muscle often occurs due to excessive stress during full extension of the muscle. In severe cases, it can lead to a partial muscle tear. The term "strain" usually refers to a more serious pulled muscle with several lesions to the muscle fiber. SPRAIN Joint injury usually caused by severely stretched ligaments most often to the ankle or knee. FRACTURES Violent break of the bone or hard cartilage following a blow and which requires medical attention as soon as possible. LOW BACK PAIN Low back pain is common in sports enthusiasts. LUXATION Abnormal displacement of an articular surface in relation to another, most often affecting the shoulder, elbow or knee. TENDINITIS Inflammation of a tendon caused by a repetitive movement.