What 4 Tests If Positive Are Indicative of a Hip Labral Tear?

Four physical examination maneuvers frequently used to flag a hip labral tear are the FADIR test, the FABER test, the Scour test, and the internal rotation over pressure (IROP) test. When several of these provoke the patient’s familiar deep groin or anterior hip pain, the clinical suspicion for a labral tear rises considerably. No single bedside test, however, is accurate enough to confirm the diagnosis on its own, which is why clinicians rely on clusters of positive findings rather than any one result.

The FADIR Test

FADIR stands for flexion, adduction, and internal rotation. You lie on your back while the examiner bends your hip to about 90 degrees, moves the knee across your body toward the opposite shoulder, and then rotates the shin outward so the femoral head presses against the front of the labrum. A positive result means this combination reproduces your pain, usually a sharp catch or pinch deep in the groin. FADIR is sometimes called the anterior impingement test because the maneuver mimics the bony contact that occurs with femoroacetabular impingement, a condition that frequently coexists with labral damage.

In terms of diagnostic accuracy, FADIR consistently shows up as a good “screening” test. One systematic review reported that its sensitivity for labral tears reached as high as 100 percent in some study populations, meaning it rarely misses a true tear when the test is positive or when pain is provoked.¹ The catch is that sensitivity varies widely from study to study. A separate investigation found the FADIR test’s sensitivity at only about 43 percent and its specificity around 56 percent, though the positive predictive value was high at 93 percent because labral tears were so common in that patient population.² The overall picture is that a positive FADIR raises suspicion, and a negative FADIR is probably the single best bedside clue that a labral tear is not the problem.³

The FABER Test

FABER stands for flexion, abduction, and external rotation, and it is also known as Patrick’s test or the figure-four test. You lie on your back, place the ankle of the affected side on the opposite knee so your leg forms a “4,” and the examiner gently presses the bent knee toward the table. Pain in the groin area suggests an intra-articular hip problem such as a labral tear, while pain felt more toward the back of the pelvis may point to a sacroiliac joint issue instead.

FABER tends to be a better “rule-in” test. The same systematic review that gave FADIR its top sensitivity score reported that FABER achieved 100 percent specificity in certain study designs, meaning a positive FABER was virtually always associated with confirmed labral pathology.¹ Other data place its sensitivity around 82 percent and note that it carries one of the higher positive predictive values among common hip provocation tests.⁴ Like all physical exam findings, the numbers bounce around depending on the reference standard and the patient population studied. Still, FABER complements FADIR well: one is better at catching tears (high sensitivity), the other is better at confirming them (high specificity).

The Scour Test

The Scour test, sometimes called the quadrant or labral stress test, applies a compressive load through the hip joint while the examiner moves the femur through a wide arc of flexion and rotation. You lie on your back, the examiner flexes the hip and knee, and then sweeps the thigh through adduction and abduction while pressing down through the knee toward the socket. The examiner is essentially grinding the femoral head against different parts of the labral rim. A positive result is a painful click, catch, or reproduction of the patient’s typical symptoms at a specific point in the arc.

Compared with FADIR and FABER, the Scour test has received less standalone scrutiny in large diagnostic accuracy studies, but it appears regularly in clinical guidelines for assessing labral pathology and femoroacetabular impingement.⁵ Its value lies in the way it sweeps the joint through multiple positions. A tear confined to the anterior labrum may provoke pain only in certain arcs, while a larger or more posterior tear may reproduce symptoms at a different point. When the painful arc aligns with what the clinician sees on imaging, it adds confidence to the diagnosis.

The Internal Rotation Over Pressure Test

The IROP test is performed with you lying on your back and the hip flexed to 90 degrees. The examiner then forcefully internally rotates the hip, adding overpressure at the end of the range. The idea is to stress the anterosuperior labrum where most tears are located. A positive result is reproduction of the patient’s groin pain at the end range of internal rotation. One study found that IROP and FABER shared the highest positive predictive values among common provocation maneuvers for intra-articular hip pathology.⁴

Some clinicians consider IROP a variation of the impingement test rather than a completely separate maneuver, because both push the femoral head against the anterior acetabular rim. One study that isolated the impingement test found a sensitivity of 59 percent but a specificity of 100 percent, with a perfect positive predictive value, meaning every patient with a positive test turned out to have a labral tear at surgery.⁶ The trade-off was that the test missed a fair number of tears (low sensitivity), so a negative result did not rule anything out.

Why Clinicians Use a Cluster Rather Than a Single Test

The reason you will see these four tests performed together rather than in isolation is that each one probes the hip joint at a slightly different angle and under different forces. A tear on the front of the labrum may light up with FADIR but not with FABER. A tear located more superiorly may respond to the Scour test but be silent on IROP. By combining all four, a clinician covers more of the labral surface and increases the odds of catching the tear regardless of its exact position.

Even so, a systematic review of hip provocation tests cautioned that the research has not yet produced any single test with enough specificity to confidently rule in a labral tear on its own.³ The best clinical use of these tests is to rule the diagnosis out: if FADIR, FABER, Scour, and IROP are all negative, a labral tear is unlikely. When multiple tests are positive, imaging is the logical next step. Experienced clinicians who combine physical examination findings with a thorough history can reach the correct diagnosis roughly 80 to 85 percent of the time before any imaging is ordered.⁷

What the Labrum Actually Does

Understanding why a tear matters helps explain what these tests are stressing. The acetabular labrum is a ring of tough fibrocartilage that lines the rim of the hip socket. Its most important job is maintaining a suction seal that holds the femoral head snugly in place. Cadaver studies have shown that the labrum accounts for roughly 70 to 77 percent of the hip’s resistance to being pulled apart at small displacements, far more than the joint capsule contributes at those distances.⁸ A tear disrupts that seal. Even a partial tear drops the fluid pressure inside the joint to about 75 percent of normal, and a partial resection (surgical trimming) drops it further to roughly half.⁹ The lost pressurization reduces the joint’s ability to distribute forces evenly and may accelerate cartilage wear over time.

Labra that are smaller in height, below about 6 millimeters, produce a weaker suction seal to begin with, which may partly explain why some people develop symptoms from relatively minor tears while others tolerate larger ones without complaint.¹⁰

Confirming the Diagnosis With Imaging

When the physical exam raises suspicion, imaging is used to confirm whether a tear exists and to plan treatment. Standard MRI picks up labral tears with a pooled sensitivity of about 77 percent and specificity around 74 percent.¹¹ Magnetic resonance arthrography, where contrast dye is injected into the joint before scanning, does considerably better: pooled sensitivity rises to about 87 percent, and one head-to-head comparison reported sensitivity of 95 percent and specificity of 100 percent for MRA versus 70 percent and 86 percent for conventional MRI.¹² MRA is widely considered the imaging test of choice when a labral tear is the primary concern, with arthroscopy remaining the gold standard for definitive visualization.¹³

Diagnostic injections can also play a role. A local anesthetic injected into the hip joint under ultrasound or fluoroscopic guidance temporarily numbs intra-articular structures. If the injection eliminates or dramatically reduces the patient’s pain, the source is almost certainly inside the joint (labrum, cartilage, or both) rather than coming from surrounding muscles, tendons, or the spine.¹⁴ The injection is not perfect, though, and some patients with confirmed labral pathology still report incomplete pain relief from it.¹⁵

Where Tears Tend to Occur and Why It Matters for Testing

The location of a tear is not random. In patients with femoroacetabular impingement, tears cluster along the anterior and anterosuperior labrum, exactly the zone stressed by FADIR and impingement testing. In patients with hip dysplasia, which involves a shallow socket, tears shift toward the superior and anterosuperior zones because the labrum in that area bears more load when bony coverage is insufficient.¹⁶ A systematic review found that labral tears were present in roughly 79 percent of dysplastic hips and 94 percent of hips with impingement, underscoring how tightly these structural abnormalities are linked to labral damage.¹⁷

This anatomy explains one clinical reality that confuses patients: you can test positive on FADIR but negative on FABER, or vice versa, depending on where the tear sits. A posterior tear, which is rare, may not provoke any of the four standard tests. In those uncommon cases, the diagnosis is often made only after imaging or during a diagnostic injection.

What Happens After Diagnosis

Not every labral tear needs surgery. A course of nonsurgical management, typically including targeted physical therapy, activity modification, and sometimes anti-inflammatory medication or a cortisone injection, can produce meaningful functional improvement. One study tracked patients with symptomatic labral tears through at least a year of conservative treatment and found that functional scores improved, though many patients still reported residual pain and a significant number remained interested in eventual surgery.¹⁸ A smaller case series found that all participants responded well to a supervised rehabilitation program, suggesting that conservative care is a reasonable first step for many patients.¹⁹

When surgery is pursued, the trend in recent years has shifted toward labral repair rather than debridement (trimming away the damaged tissue). A study of over 200 hips followed for up to ten years found that patients who underwent labral repair had a much lower rate of eventually needing a total hip replacement, roughly 5 percent versus 22 percent in the debridement group.²⁰ Both groups showed similar satisfaction and functional scores in the short term, but preserving the labrum appears to protect the joint over the long haul, which makes sense given the labrum’s role in maintaining the suction seal described earlier.

Returning to Activity After Surgery

Recovery from arthroscopic labral repair generally follows a phased rehabilitation program. Early phases focus on protecting the repair, restoring range of motion, and reactivating the hip stabilizing muscles. Later phases add progressive strengthening, agility drills, and sport-specific tasks. The transition to unrestricted activity typically begins around 12 weeks after surgery, though timing should be driven by objective benchmarks rather than the calendar alone.²¹ Return-to-sport testing often requires that the surgical leg reach at least 90 percent (and ideally above 95 percent) of the opposite leg’s strength and power before full clearance.

Criteria-based progression matters because pushing too fast risks re-tearing the repair, while being too cautious can lead to prolonged weakness and stiffness. A well-designed rehab protocol tracks range of motion, core and hip stability, symmetry during functional tasks, and sport-specific performance metrics before advancing through each phase.²²

The Role of Psychological Factors in Recovery

One finding that surprises many patients is how strongly psychological state influences outcomes after hip surgery. A meta-analysis of studies on prearthritic hip conditions found that patients with psychological impairment, including anxiety, depression, or fear of movement, were less likely to achieve a favorable surgical outcome and reported functional scores roughly 20 points worse on patient-reported outcome measures compared with patients without those factors.²³ This does not mean the surgery failed in a structural sense. It means that pain perception, willingness to engage fully with rehabilitation, and overall satisfaction with recovery are all filtered through mental health. If you are heading into treatment for a labral tear and are dealing with significant anxiety or low mood, addressing those issues alongside the physical rehab is likely to improve your overall result.