ADDUCTOR (GROIN STRAIN) An adductor (groin strain) is a tear or rupture to any one of the adductor muscles on the inside of the thigh. Symptoms include a sudden sharp pain and depending on how bad the groin strain is swelling and bruising may occur. An adductor (groin) strain is a common problem among many individuals who are physically active, especially in competitive sports. The most common sports that put athletes at risk for adductor strains are football, soccer, hockey, basketball, tennis, figure skating, baseball, horseback riding, karate, and softball.