Adductor-Related Longstanding Groin Pain

The VerdictMODERATE CONVICTION

Groin pain that has dragged on for months isn't fixed by rest, it's fixed by strengthening.

Try this now. Squeeze a cushion or ball between your knees as hard as is comfortable and hold for 30 seconds. If it reproduces your familiar groin pain, that is your baseline. Repeat it 5 times through the day. This is the start of the fix, not something to rest away.

What this actually is: the muscles on the inside of your thigh have been overloaded where they attach to your pelvis, and they have stayed sore for months.
What most people get wrong: resting it or chasing a scan. Rest makes the muscle weaker, and scans show the same findings in pain-free athletes.
The first thing to start doing: progressive strengthening (start by squeezing something between your knees), while easing off hard sprinting and kicking for a few weeks.

Think of the inner-thigh muscles as a rope anchored to your pelvis. Every sprint and kick yanks that anchor. If the rope is weaker than how hard you pull, the anchor stays sore. The fix is a stronger rope, not a rested, even weaker one.

What Works

Ranked by evidence. The strengthening is the treatment; everything else supports it.

Cinematic anatomy of the inner-thigh muscles and their attachment at the pelvis

1. Active, progressive strengthening

STRONG

Progressive loading of the inner-thigh and abdominal muscles, building tolerance step by step. The Copenhagen adduction exercise is the common modern version.

Evidence: the one landmark trial had strengthening beat passive therapy decisively (23 of 29 back to sport pain-free vs 4 of 30), and it held up at 8 to 12 years. The direction is strong; the exact sets and reps are not established.

Exercise	Dose	Pain guide
Isometric knee squeeze (ball between knees, static hold)	Hold 30-45s × 5, daily early on	Strong squeeze, mild familiar ache, no sharp pain
Copenhagen adduction (side-lying, lift from the inner thigh; start from the knee, progress to the foot)	Start 2×6, build up, 2-3×/week	Effortful, mild ache okay; stop if sharp
Banded / cable standing adduction (pull leg across the body)	3×10-12, 3×/week	Controlled effort, no sharp pain

See Tier 2 & Tier 3 (support and last-resort options)

2. Manual therapy + whole-picture screen

MODERATE

Hands-on treatment can get athletes back to sport faster (12.8 vs 17.3 weeks in a trial) but did not raise the final return rate. Use it to speed things up, not to replace the strengthening. Also screen and treat the hip, pubis, and hip-flexor, because these problems often travel together.

3. Load modification and last-resort options

EMERGING

Back off the high-tension actions (hard kicking, sprinting, cutting) while keeping everything else. Only after a genuine failed strengthening trial do injections (botulinum toxin) or surgery (adductor release) come into play, and the evidence for those is weak.

Exercise Prescription

Weeks 1-2: settle it, isometric squeezes, cut the hard sprint/kick volume. Weeks 3-4: progress the Copenhagen and banded work, add easy running. Weeks 5+: add speed, then cutting, then kicking last. Keep one or two strength sessions a week afterward so it doesn't come back.

What Doesn't Work

Passive treatment alone (laser, ultrasound, massage, stretching). This was the losing arm of the landmark trial.
Chasing the scan. Treating an MRI finding that pain-free athletes also have leads nowhere good.
Full rest. It deconditions the exact tissue you need to load, widening the gap.

Return to Training

Gate the return on these, not on the calendar.

Full, pain-free hip range of motion
Little to no pain on squeezing and on pressing the sore spot at the pelvis
Adductor strength restored toward the uninjured side / your previous baseline
Completed a graded build through running, speed, cutting, then kicking last, with no next-day flare
Sport-specific actions tolerated with no more than mild ache that settles within 24 hours

Red Flags — Get Checked First

Most groin pain is a straightforward overload problem. These signs are not, and they need assessment before you load it hard.

Pain in the middle of the pubic bone with bony tenderness. Could be a pubic bone-stress injury (osteitis pubis) that needs offloading and imaging, not aggressive strengthening.
Constant or night pain unrelated to activity, feeling generally unwell, unexplained weight loss, or a lump. Screen for causes that are not muscle.
Urinary, bowel, or genital symptoms, or a groin bulge. Could be a hernia or another system entirely.
An adolescent with pain high up near the pelvis. Could be a growth-plate (bone) injury. Image before hard loading.
No progress after a genuine 2 to 6 month strengthening program. Reconsider the diagnosis (hip or inguinal cause) and get a specialist opinion.

Refer to: GP for systemic or non-muscle features; Sports Medicine or Orthopaedics for suspected hip, pubic bone-stress, inguinal, or stubborn cases.

Squeeze a cushion or ball between your knees as hard as is comfortable and hold for 30 seconds. If it reproduces your familiar groin pain, that's your baseline.

Repeat it five times through the day. This is the start of the fix, not something to rest away.

Takes less than 2 minutes. No equipment needed.

Conviction: Moderate

Active loading beats passive therapy for return to sport MOD-HIGH
The benefit is durable once achieved MOD-HIGH
Diagnosis is clinical, not from a scan MOD-HIGH
Manual therapy adds speed, not a better final outcome MODERATE
Specific exercise dosing DATA UNAVAILABLE
Injections / surgery for stubborn cases LOW

What would change the "strengthening beats rest" verdict?

A multi-centre trial (150+ athletes, mixed sex and sport) of a fully specified strengthening program against a general-exercise comparator, with return-to-sport and 12-month recurrence as co-primary outcomes.

What would move exercise dosing off "data unavailable"?

The same trial specifying exact sets, reps, load, and progression (for example a standardized Copenhagen adduction build), so the dose could be recommended rather than inferred.

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The Full Picture — Anatomy, Diagnosis & Evidence

What's Actually Going On

Cinematic anatomy of the adductor muscle group running from the pubis to the inner thigh

The inner-thigh (adductor) muscles run from the pubic bone down to the inner thigh. They pull the leg toward the midline, slow the leg during cutting, steady the pelvis when you stand on one leg, and fire hard when you kick. The adductor longus is the workhorse, and its attachment on the pubic bone is where longstanding pain concentrates.

The problem is a mismatch between load and capacity, not a single tear. Repeated high-tension demands pile up faster than the attachment can adapt, so it becomes painful and stays painful, often for months (the median in the landmark trial was 40 weeks). That's the difference from an acute strain, which is a discrete tear with a healing timeline. Because this is a capacity problem, the fix is rebuilding capacity, not waiting for a wound to close.

Reduced hip movement and impingement-shaped hips often travel with it, which is why the hip joint gets screened rather than assumed innocent.

How to Identify It

Cinematic anatomy of the groin and pelvis assessment region

This is a clinical diagnosis built from two positives together, not a single special test and not a scan.

Tenderness on pressing the adductor longus attachment at the pubis Sn/Sp: not established · reliability slight-moderate
Familiar groin pain on resisted adduction, including with the leg out to the side Sn/Sp: not established · more reliable
Screen the hip-flexor (resisted hip flexion), pubis, and hip joint too, because a third of athletes have more than one source

Imaging is common in pain-free athletes, so a scan supports or excludes other things and checks the hip; it does not define this condition.

The Debate

Strengthen vs rest / passive treatment

Older habit: rest it, or treat it passively (stretching, laser, ultrasound, massage).

The losing arm of the landmark trial (4 of 30 back to sport).

Better evidence: active progressive strengthening beat passive care and lasted (Holmich 1999 / 2011).

Follow the strengthening. Passive care is not a primary treatment.

Diagnose off the scan vs off the exam

Older habit: the scan is the cornerstone.

But the same MRI findings show up in pain-free athletes (Branci 2015).

Better evidence: the exam defines the entity; imaging excludes alternatives and checks the hip.

No formal guideline exists for this condition as of 2026. The 2015 Doha Agreement is a naming consensus, not a treatment guideline.

Honest Limitations

The evidence is one trial deep

The whole "strengthening works" conclusion rests on a single 1999 trial (68 athletes) and its own follow-up. No meta-analysis, no Cochrane review, no formal guideline.

Elite, male, football-heavy

The cohorts are mostly male soccer players. Transfer to women, older recreational athletes, and non-cutting sports is a reasonable extrapolation, not a demonstration.

"Program" is not "prescription"

The trials describe a category of exercise, not a reproducible sets-and-reps table. Specific dosing is unavailable, and sticking with a multi-week program is the usual point of failure.

The Nuance

Cinematic anatomy of the hip and groin region in dramatic light

The success figures cut two ways. In the protocolized trial the ceiling is excellent and durable (about 79% back to previous sport, pain-free, at 8-12 years). In everyday clinic cohorts the floor is more modest: only about 50-55% returned in a comparative trial, and 26% relapsed at mid-term. Both are true. Aim for the ceiling, but plan for relapse by keeping maintenance strengthening going.

Surgery and injections are salvage options for the minority who fail a real strengthening trial, and the evidence behind them is weak (retrospective, uncontrolled). Nobody should be operated on before a proper program has been tried. And because these groin problems coexist, treating only the inner thigh while ignoring a contributing hip, pubis, or hip-flexor is the quiet reason some cases don't settle.

Sources

Holmich P, et al. (1999), Lancet. Randomized trial, N=68. Active training 23/29 vs passive physiotherapy 4/30 returned to sport pain-free. The landmark trial.
Holmich P, et al. (2011), Am J Sports Med. 8-12 year follow-up. ~79% returned to previous sport pain-free. Effect is durable. Level 1.
Weir A, et al. (2011), Manual Therapy. RCT. Manual therapy + exercise faster to sport (12.8 vs 17.3 weeks) than exercise alone, but ~50-55% returned in either arm.
Holmich P, et al. (2007), Br J Sports Med. N=207. Adductor entity primary in 58% (69% of footballers); entities coexist in a third.
Branci S, et al. (2015), Br J Sports Med. MRI findings occur in pain-free athletes and controls; imaging poorly discriminates.
Rankin AT, et al. (2015), Am J Sports Med. N=894. Hip pathology a leading cause of groin pain; the entities coexist.
Weir A, et al. (2015), Br J Sports Med. Doha agreement on terminology and classification of groin pain in athletes.