Inner thigh or groin pain can cause discomfort on the inside of your leg that can be felt from the groin and all the way down to the knee. This type of injury is common in sports involving rapid acceleration, deceleration, and with rapid change in direction such as soccer, basketball, football, tennis, ice hockey, and martial arts. Often these injuries involve strains (tearing or stretching) of the adductor muscles or chronic damage to the adductor tendons.
The adductor muscles (adductor longus, brevis, magnus, and the gracilis) are responsible for bringing your legs together towards the midline, crossing your legs across the midline, play a part in internal and external hip rotation, hip flexion and extension, and assists with stability. These muscles are located on both inner thighs stretching from the groin and down to the inner part of the knees.
The symptoms associated with adductor muscle strain includes tenderness, stiffness, and pain at the origin of the muscle. The pain can be characterized as sharp, stabbing, or a constant dull ache that can make it difficult to perform daily activities. Pain and stiffness often resolve after a period of warming up but often recur after athletic activities have seized.
Muscle and tendon tear are graded based on the severity of the injury.
-Grade 1: tear of a small number of muscles and/or tendon fibers causing pain with minimal or no loss of strength or motion
-Grade 2: tear of a significant number of muscles and/or tendons causing pain, swelling, decreased motion, and decreased strength but not complete loss of function.
-Grade 3: complete disruption of the muscle-tendon unit with loss of function
Treatment includes RICE (rest, ice, compress, elevate), activity restrictions, physiotherapy (PT), platelet rich plasma (PRP)/steroid injection and surgery (for complete avulsions).
Other considerations includes…
Muscle and tendon injury
-Sports hernia or athletic pubalgia (has the same presentation but increased intra-abdominal pressure from valsava maneuver or sit-ups makes the pain worse)
-Osteitis pubis refers to an inflamed pubic symphysis which is the joint that connects the two-halves of your pelvic bone.
-Lower abdominal muscle strain
-Stress fractures of the pelvis or the thigh bone (femur)
-Inguinal (groin) nerve pain causes lower abdominal pain that can radiate to the groin and thigh
-Obturator nerve entrapment can cause sensory loss, paresthesia, inner thigh pain especially in sports that involves kicking or twisting
-Labral tear involves the ring of cartilage that follows outside rim of the socket of the hip joint
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