Groin Pain in Footballers: More Than Just a Strain

Why "just rest it" doesn't work

Groin strains often get treated like ankle sprains: stop playing, wait for the pain to settle, go back once it feels fine. For adductor-related groin pain — pain in the muscles that pull your leg inward, on the inside of the thigh — that approach is a major reason it keeps coming back.

Rest lets pain settle. It doesn't rebuild the strength the muscle lost during the injury. Players who return once they're "pain-free," but before that strength is rebuilt, are walking back onto the pitch with a weaker inner thigh than before. Adductor injuries have one of the highest reinjury rates in football, and most of it happens in the first few weeks after returning.

What's actually going on down there

The adductors are a group of muscles running from your pelvis to the inside of your thigh bone. They control every sideways cut, every time you plant your foot to change direction, and every kick.

Adductor-related groin pain shows up as tenderness along the inner thigh, pain when you squeeze your knees together against resistance, or a pulling sensation when the leg stretches out to the side. It's one of several groin pain patterns clinicians look for — others involve the hip, the pubic bone, or the lower abdominal muscles — but adductor strain is the most common in footballers, usually from sprinting, cutting, or kicking.

The first two weeks: load it, don't just rest it

The outdated approach is complete rest until pain disappears, then a sudden jump back into training. The current approach starts loading the muscle almost immediately, just at a level that doesn't provoke pain.

In the first days after injury, that means gentle, pain-free isometric holds — pushing the legs together against something solid (a pillow, a partner's hand) and holding, without moving the joint. This keeps the muscle working without stressing the healing tissue. As pain settles, usually within one to two weeks for a mild strain, loading progresses to resistance band work and bodyweight exercises through a full range of motion.

Skipping this phase is one of the most common mistakes. Players — and sometimes coaches — treat "pain-free" as the finish line, when it's really the start of the strength-building phase.

Rebuilding strength: the exercise that matters most

The Copenhagen Adduction exercise is the single most researched exercise for this injury. It's a side-plank-style movement with your top leg supported on a bench, working the inner thigh through a long, controlled range. Research consistently shows it builds inner-thigh strength and reduces reinjury risk when done consistently — how often and how many reps matters more than any single session.

It belongs in the middle-to-late stage of rehab, once basic pain-free strength work is tolerated — not in the first week, and not as a test to "pass" before returning. That's a common point of confusion: being able to do a pain-free Copenhagen Adduction is a good sign, but on its own it isn't proof you're ready for match play. It's a training tool, not a readiness test.

Return to play: five checks, not one

"Can you run without pain?" isn't enough. The current standard for clearing a footballer to return looks at several things together:

A player can pass four of these and still not be ready if the fifth — often movement quality when tired, or confidence under match pressure — isn't there. Professional clubs use GPS tracking and simulated match drills to check this; at an amateur level, a graded return through training drills that mimic match intensity does the same job.

Why the comeback matters as much as the rehab

Most reinjuries happen in the first few weeks after returning, not because the rehab failed, but because the jump back to full training or competition was too sudden. The safest path is staged: controlled training first, then full training, then match minutes — each stage a deliberate step up in intensity, not a single cutover the day symptoms disappear.