What is the FABER Test?
The FABER test is a quick physical exam maneuver used by clinicians to investigate pain or stiffness in the hip or lower back region. « FABER » stands for Flexion, Abduction, and External Rotation, which are the movements applied to the patient’s leg during the test. It is also known as Patrick’s test.
This test is especially helpful in distinguishing between problems located in the hip joint itself and those in the sacroiliac (SI) joint—the joint connecting the lower spine and pelvis. Since these areas can produce similar symptoms, the FABER test can help target the source of pain or discomfort.
How is the FABER Test Done?
The examiner asks the patient to lie flat on their back. The tested leg is placed in a figure-four position: the ankle of that leg rests on the opposite knee. The examiner then gently presses down on the bent knee while stabilizing the opposite hip.
This maneuver moves the hip and the SI joint in specific ways. Any limitation in movement, or the reproduction of pain, can indicate an underlying problem. The precise location of discomfort is crucial for interpretation.
| Purpose | Assesses hip, SI joint, or surrounding tissue issues causing pain |
|---|---|
| Full Name | Flexion Abduction External Rotation test (Patrick’s test) |
| Positive Sign | Pain at hip, groin, or buttock, or limited range of motion |
| Common Uses | Differentiating hip vs SI joint pain in clinical exams |
| Should You Diagnose on FABER Alone? | No; further tests and clinical correlation needed |
Interpreting a FABER Test Positive Result
A positive FABER test means the test caused pain or revealed restricted movement. However, the detail that matters most is where the patient feels the pain.
If pain is felt in the groin or front of the hip, this usually points to a problem within the hip joint itself. If discomfort arises over the buttocks or near the SI joint, it suggests a sacroiliac or posterior pelvic issue. Sometimes, pain may be more diffuse or non-specific.
Typical Findings in a FABER Test Positive
- Groin pain: Indicates potential hip joint pathology (e.g., osteoarthritis, labral tear).
- Posterior (buttock) pain: Suggests sacroiliac joint dysfunction or inflammation.
- Reduced range of motion: May indicate stiffness from arthritis or past injury.
It is not diagnostic of a single condition—other tests and symptoms must be considered.
Clinical Significance & Common Conditions
So what exactly does a FABER test positive mean for patient care? It helps clinicians rule in or rule out specific causes of hip pain or pelvic discomfort.
When the test is positive, it raises suspicion for several conditions but does not confirm a diagnosis. The next challenge is to distinguish among possibilities:
Common Conditions Associated with FABER Test Positive
- Hip Osteoarthritis: Degeneration and inflammation in the hip joint.
- Femoroacetabular Impingement: Abnormal hip structure causing painful contact.
- Hip Labral Tear: Damage to the ring of cartilage around the hip socket.
- Sacroiliitis: Inflammation of the sacroiliac joint (can occur with some rheumatological diseases).
- Sacroiliac Joint Dysfunction: Non-inflammatory mechanical pain at the SI joint.
- Hip Sprains or Strains: Injury to the soft tissues near the hip.
Rarer causes include infections, fractures, or tumors—but these are usually suggested by other signs and symptoms.
Diagnostic Limitations to Remember
The FABER test is not 100% specific or sensitive for any one diagnosis. It should always be interpreted as part of a comprehensive assessment. Sometimes, pain can be « referred » from other regions, such as the lower back or lumbar spine, complicating the picture further.
Next Steps After a Positive Result
What should a patient or student know after encountering a positive FABER test? The test result points to a problem but does not identify the exact cause. It signals the need for further steps.
This is both a security and a challenge: It protects against jumping to conclusions, but it means more investigation is needed.
Recommended Next Steps
- Detailed medical history and symptom review (injury, duration, activity, other medical conditions)
- Comprehensive physical exam of hip, pelvis, and lower back
- Imaging as indicated (X-ray, MRI, or CT scan for structural assessment)
- Possible referral to orthopedics, rheumatology, or physiotherapy, depending on findings
- Symptom management (rest, ice, physical therapy, medications as guided by a medical provider)
Always remember: No single exam test can diagnose every hip or pelvic condition. Clinical judgment, additional tests, and sometimes specialist consultation are key.
Key Points Summary
- FABER test positive points to possible hip or SI joint pathology but is not diagnostic by itself.
- Location of pain during the test helps differentiate causes.
- Common related conditions include arthritis, labral tear, and sacroiliac issues.
- Further evaluation and sometimes imaging are needed to reach a diagnosis.
- A positive result is just one piece of the clinical puzzle.
FAQ: FABER Test Positive
What does a positive FABER test indicate?
It suggests hip joint or sacroiliac joint pathology but is not specific for one disease.
Can you self-diagnose with a FABER test?
No—this test should be performed and interpreted by a trained clinician, as many conditions can mimic these symptoms.
What further tests might be ordered?
Doctors may request X-rays, MRI, or CT scans based on exam findings, and possibly blood tests for inflammation or infection.
Is a positive FABER test painful?
By definition, a positive test reproduces the patient’s pain or shows stiffness—usually mild but can be uncomfortable.
What is the difference between a positive and negative FABER test?
A negative test causes no pain and full movement; a positive test causes pain or limited motion, guiding further evaluation.