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Groin · Acute Adductor Strain

Groin Strain

You've strained one of the muscles on the inner side of your thigh — you've overstretched it and partly torn it, usually near where it attaches at the top of your thigh. It's the classic 'groin pull' from kicking and quick changes of direction. Most are partial tears that recover well with the right exercises.

The adductors get injured when they're loaded hard while lengthening — a kick, a sharp cut, a slip where the leg gets dragged outward. For decades groin strains were rested and stretched, and they lingered. The landmark Hölmich trial flipped that: an ACTIVE strengthening programme (squeezes, then the Copenhagen progression, plus hip and core) got athletes back to sport where passive treatment didn't. Load, don't rest.

How it typically shows up

Medial groin / inner-thigh pain at the adductor origin after an acute kick, change-of-direction, slip, or sprint — with adductor tenderness AND pain reproduced on resisted adduction (the squeeze test), the Doha-agreement definition of adductor-related groin pain — once a sports/inguinal hernia, an iliopsoas (hip-flexor) source, deep hip-joint (FAI) pain, and the visceral/avulsion warning signs are excluded.

How long recovery takes

Expect a step-by-step comeback over a few weeks. You'll settle things down and start with gentle squeezing holds, then gradually build up the strength of that inner-thigh muscle alongside balanced hip and core work, then practice cutting and sprinting before going back to sport. Each stage is unlocked by being pain-free, not by the calendar — and most people get back to full activity.

The phased recovery approach

  1. Phase 1 · 1–2 weeks

    Calm

    Calm the strain, restore pain-free walking, and start gentle isometric adductor squeezes at a comfortable effort. Keep any stretching pain-free; don't aggressively stretch.

    What you get back: walking without the groin twinge.

    • Hip Internal/External Rotation (90-90 / seated rocker) — 1–2 sets × 8–10 reps · Sit on the floor and rock both knees side to side (windscreen-wiper), or in a 90-90 position rotate the hips gently through a comfortable range
    • Gentle Adductor Stretch (butterfly / standing) — 2–3 sets × 10–20s hold · Sit with the soles of the feet together (butterfly), or stand and shift weight to one side, to a point JUST BEFORE pain
    • Isometric Adductor Squeeze (ball between knees) — 2–3 sets × 10–20s hold · Lie on your back, knees bent, a ball or rolled towel (or your own fist) between the knees
    • Adductor Squeeze at 90° + extended (progression) — 2–3 sets × 10–20s hold · Repeat the knee-squeeze with the hips bent to about 90°, then again with the legs nearer straight

  2. Phase 2 · 2–6 weeks

    Rebuild

    The active-loading spine — progress through the Copenhagen adduction ladder (side-lying adduction → short-lever → long-lever plank) plus balanced abductor/core work, mainly building eccentric adductor strength.

    What you get back: strong legs for quick cuts.

    • Adductor Squeeze at 90° + extended (progression) — 2–3 sets × 15–30s hold · Repeat the knee-squeeze with the hips bent to about 90°, then again with the legs nearer straight
    • Isometric Adductor Squeeze (ball between knees) — 2–3 sets × 15–30s hold · Lie on your back, knees bent, a ball or rolled towel (or your own fist) between the knees
    • Cable / Machine Hip Adduction — 2–3 sets × 10–15 reps · Use a cable with an ankle strap (or the seated adductor machine): pull the leg in across the body against the resistance, then return slowly under control
    • Banded Standing Hip Adduction — 2–3 sets × 10–15 reps · Anchor a band at ankle height to the side; loop it on the inside ankle and pull the leg in across the body against the band, then return slowly

  3. Phase 3 · 2–4 weeks

    Back to running

    Lock in eccentric adductor strength, rebuild straight-line walk-jog volume, and rehearse the mechanism — change-of-direction, cutting, and sprinting at a pain-free intensity — before returning to running or kicking/cutting sport.

    What you get back: back to running and cutting sport.

    • Groin Walk-Jog Build — 1 sets × 600–1200s hold · Alternate easy jogs with walking recoveries on flat ground before adding speed, hills, or cutting
    • Standing Wall Adductor Squeeze (ball/towel against wall) — 2–3 sets × 20–30s hold · Stand side-on to a wall, place a ball or rolled towel between the inside of your near knee and the wall, and press in to a steady squeeze
    • Adductor Squeeze at 90° + extended (progression) — 2–3 sets × 20–30s hold · Repeat the knee-squeeze with the hips bent to about 90°, then again with the legs nearer straight
    • Weighted Copenhagen Plank (long lever + load) — 2–3 sets × 6–10 reps · Set up the long-lever Copenhagen (top foot on a bench), then add load — an ankle weight on the top leg or a weight vest

  4. Phase 4 · 1–3 weeks

    Back to daily life

    Lock in the adductor, hip, and core strength that keeps everyday life — walking, stairs, getting in and out of the car, carrying — pain-free, without the impact of return-to-sport drills.

    What you get back: everyday life, pain-free.

    • Graded Walking — 1 sets × 600–1800s hold · Walk on flat ground at an easy pace with a normal stride
    • Standing Wall Adductor Squeeze (ball/towel against wall) — 2–3 sets × 20–30s hold · Stand side-on to a wall, place a ball or rolled towel between the inside of your near knee and the wall, and press in to a steady squeeze
    • Adductor Squeeze at 90° + extended (progression) — 2–3 sets × 20–30s hold · Repeat the knee-squeeze with the hips bent to about 90°, then again with the legs nearer straight
    • Weighted Copenhagen Plank (long lever + load) — 2–3 sets × 6–10 reps · Set up the long-lever Copenhagen (top foot on a bench), then add load — an ankle weight on the top leg or a weight vest

  5. Phase 5 · 2–5 weeks

    Back to the gym

    Take the inner thigh to a real training load — keep the long-lever Copenhagen eccentric, then add externally-loaded hip adduction (cable/machine or band) and the compound lifts that load the adductor (squat, Romanian deadlift) — each step only when the groin stays pain-free during and after.

    What you get back: lifting and training again.

    • Cable / Machine Hip Adduction — 3–4 sets × 8–12 reps · Use a cable with an ankle strap (or the seated adductor machine): pull the leg in across the body against the resistance, then return slowly under control
    • Banded Standing Hip Adduction — 3–4 sets × 8–12 reps · Anchor a band at ankle height to the side; loop it on the inside ankle and pull the leg in across the body against the band, then return slowly
    • Side-Lying Hip Adduction (bottom-leg lift) — 3–4 sets × 8–12 reps · Lie on the injured side, top leg crossed in front, lift the bottom (injured) leg up toward the ceiling and lower under control
    • Standing Wall Adductor Squeeze (ball/towel against wall) — 2–3 sets × 20–30s hold · Stand side-on to a wall, place a ball or rolled towel between the inside of your near knee and the wall, and press in to a steady squeeze

Exact exercises, sets and progression depend on your severity, equipment and goal — this is the shape of the program, not a one-size prescription.

What matters while you recover

  • Strengthen it — don't just rest and stretch

    The biggest lesson in groin strains is that ACTIVE strengthening — not rest and passive treatment — is what recovers them. The landmark trial got athletes back to sport with a strengthening programme (squeezes → the Copenhagen plank ladder → hip and core) where rest, massage, and stretching alone fell short. Build the load steadily; move up a level only when the current one is easy and pain-free.

  • Keep it (almost) pain-free

    Keep the exercises essentially pain-free — a little controlled discomfort that settles quickly is fine, but never push into real pain, and don't mask it with anti-inflammatories. A muscle strain is NOT a tendon problem, so the more permissive 'some pain is fine' tendon rule does NOT apply here.

  • When groin pain isn't a pulled muscle

    Most groin strains respond well to the strengthening plan. But groin pain has mimics worth knowing: pain in the lower-belly crease that's worse when you cough or strain can be a hernia (needs a surgical opinion); pain in the testicle or lower abdomen, a fever, or pain with no sporting strain can signal something that isn't a muscle at all — get those checked promptly rather than loading them.

Common questions

Should I just rest it and stretch?
No — that's the old approach and it left groins lingering. The evidence (Hölmich) is that an ACTIVE strengthening programme recovers an adductor strain, while passive treatment and stretching alone often doesn't. Keep stretches gentle and pain-free; the strengthening is what heals it.
How much pain is okay during the exercises?
Keep it essentially pain-free — a little controlled discomfort that settles quickly is fine, but never push into real pain. A muscle strain is not a tendon problem, so the more permissive tendon pain rule doesn't apply here.
How do I know it's the adductor and not something else?
The giveaway is that squeezing your knees together reproduces the INNER-thigh pain. Pain at the front hip crease on lifting the knee points to the hip flexor; pain in the lower-belly crease that's worse coughing points to a hernia; deep joint pain on pivoting points to the hip itself — different problems.

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