Groin muscle strains -- sometimes called pulled muscles -- are painful injuries, caused by forceful movements of your leg, such as stepping off a curb while off balance or falling with your leg stretched out to the side. Female athletes whose sports require running, jumping and kicking are prone to these injuries. Groin muscle strains have distinct signs and symptoms.
Pain and Bruising
Groin muscle strains range in severity from mild overstretching to severe tears of the muscle fibers. These injuries cause pain in your inner thigh, near your pubic bone, which may radiate to the front of your thigh. You'll feel sharp pain at the time of the injury and whenever you put weight on your leg. Your groin area may ache at rest. Using the injured muscles can cause pain for weeks. Internal muscle bleeding may cause bruising on the inside of your thigh.
Weakness and Popping
Severe groin strains can cause significant muscle damage, making it difficult to move your leg. Weakness can cause difficulty with lifting your leg to get into bed or climbing stairs. In severe cases, you may have to use your hands to lift your leg. If your muscle tears completely, you will be unable to perform these movements. You may feel a dent in your upper thigh where the tear occurred. Groin muscle strains may also cause a popping sensation. Get immediate medical attention if you have these symptoms or if the injury does not get better within a week.