Gerber’s Lift Off Test – Orthopedic Shoulder Examination

Gerber’s Lift-Off Test is an orthopedic examination technique used to assess the integrity of the subscapularis muscle and tendon. It is the most widely used clinical test for identifying subscapularis tears and was first described by Swiss orthopedic surgeon Christian Gerber in 1991. The test requires the patient to actively lift the dorsum of their hand away from their lower back — a movement that isolates subscapularis function and reveals significant tears through weakness or complete inability to perform the motion.

Quick Reference

Also Called	Lift-Off Test; Gerber’s Test
Structure Assessed	Subscapularis muscle and tendon
Common Pathology	Subscapularis tear (partial or complete)
Positive Sign	Inability to lift hand off the lower back, or significant weakness
Sensitivity (complete tear)	~62%
Specificity	~92%
Best For	Ruling in subscapularis pathology; high specificity makes a positive meaningful

Anatomy: The Subscapularis

The subscapularis is the largest and most powerful muscle of the rotator cuff. It originates from the subscapular fossa on the anterior surface of the scapula and inserts onto the lesser tubercle of the humerus. It is the only rotator cuff muscle that lies anterior to the glenohumeral joint.

Its primary actions are internal rotation of the shoulder and, in higher-demand positions, anterior stabilization of the glenohumeral joint. It is innervated by the upper and lower subscapular nerves (C5–C6).

Despite being the largest rotator cuff muscle, subscapularis tears are frequently missed — partly because the primary symptom (anterior shoulder pain with internal rotation weakness) overlaps with other common diagnoses, and partly because standard shoulder imaging protocols may not visualize the anterior cuff adequately without specific sequencing.

Common Causes of Subscapularis Tears

• Traumatic: forced external rotation, anterior shoulder dislocation, direct impact
• Degenerative: progressive tendon degeneration, often in the context of multi-tendon rotator cuff disease
• Iatrogenic: following certain shoulder procedures, including total shoulder arthroplasty
• Associated pathology: subscapularis tears frequently co-occur with supraspinatus tears and biceps tendon pathology (medial subluxation of the long head of the biceps is a common associated finding)

How to Perform Gerber’s Lift-Off Test

Patient Position

The patient stands with the arm to be tested internally rotated and extended behind the back, placing the dorsum of the hand flat against the lower lumbar spine. The elbow should be flexed to approximately 90°.

Test Procedure

1. With the patient’s hand resting against the lower back, ask them to actively lift the hand away from the back — moving it posteriorly into further internal rotation and extension.
2. Observe whether the patient can initiate and maintain the lift-off position.
3. If the patient can lift the hand, apply gentle resistance and compare strength to the contralateral side.

The examiner should stand behind or beside the patient to observe the movement clearly. Note both the ability to perform the motion and the quality of the movement — compensatory scapular winging or trunk rotation suggests the patient is struggling to generate subscapularis force.

When the Standard Position Is Not Possible

Patients with limited shoulder internal rotation, extension, or significant pain may not be able to get the hand behind the back. In these cases, the Lift-Off Test cannot be validly performed. Use the Belly Press Test or Bear Hug Test as alternatives — see Clinical Considerations below.

Video Demonstration

Positive Sign and Interpretation

A positive Lift-Off Test is defined as the inability to lift the hand away from the lower back, or a significant reduction in lift-off strength compared to the contralateral side.

The positive finding exists on a spectrum:

• Complete inability to lift: consistent with a complete subscapularis tear; the hand drops back to the lumbar spine as soon as the patient attempts active motion
• Weak but present lift-off: suggests a partial tear or significant subscapularis weakness; compare carefully to the contralateral side
• Full lift-off with normal strength: negative test; subscapularis integrity is likely intact

Also observe for the internal rotation lag sign — a related finding where the examiner passively places the hand in the lift-off position and then releases it. If the hand drops back to the lumbar spine despite the patient’s attempt to hold it, this lag indicates significant subscapularis insufficiency and is highly specific for complete tears.

Sensitivity and Specificity

The diagnostic accuracy of Gerber’s Lift-Off Test varies substantially depending on the tear type and population studied. It performs best for complete subscapularis tears and is less reliable for partial tears.

Pathology	Sensitivity	Specificity	LR+	LR−
Complete subscapularis tear	~62%	~92%	~7.8	~0.41
Partial subscapularis tear	~18–50%	~88%	~2–4	variable

The high specificity (~92%) is clinically meaningful: a positive Lift-Off Test strongly supports subscapularis pathology and warrants further investigation. However, the moderate sensitivity means a negative result does not rule out a tear — particularly a partial one. If clinical suspicion remains high after a negative test, proceed to imaging.

Clinical Considerations

• The test cannot be performed in all patients. Significant shoulder stiffness, pain with internal rotation, or post-surgical restrictions may prevent adequate positioning. Use the Belly Press Test or Bear Hug Test in these cases — both assess subscapularis function without requiring the hand-behind-back position.
• Belly Press Test (Napoleon Test): the patient presses the palm against the abdomen with the elbow forward; a positive finding is the elbow dropping behind the body plane, indicating inability to maintain internal rotation force. Useful for patients with limited range of motion.
• Bear Hug Test: the patient places the palm of the tested arm on the opposite shoulder; the examiner attempts to pull the hand away while the patient resists. Inability to hold the position suggests subscapularis weakness. Research suggests this test may be more sensitive than the Lift-Off Test for upper subscapularis tears.
• Look for associated biceps pathology. Subscapularis tears — particularly those involving the upper portion of the tendon — frequently cause medial subluxation or dislocation of the long head of the biceps tendon. Assess for biceps tendon instability as part of any subscapularis evaluation.
• Complete tears typically require surgical management. A positive Lift-Off Test in the context of a complete subscapularis tear on imaging is generally an indication for surgical repair, particularly in active patients. Refer early.
• Use imaging to confirm and characterize. MRI (specifically with anterior oblique sequencing) or ultrasound can identify subscapularis tears and quantify fatty infiltration of the muscle belly — an important prognostic factor for surgical outcomes.

Related Tests

• Belly Press Test (Napoleon Test) — subscapularis assessment via resisted internal rotation with the hand on the abdomen; preferred when Lift-Off positioning is not possible
• Bear Hug Test — may be more sensitive for upper subscapularis tears; patient resists examiner’s attempt to lift the hand from the opposite shoulder
• Internal Rotation Lag Sign — passive positioning followed by release; a drop-back indicates subscapularis insufficiency and is highly specific for complete tears
• Hornblower’s Test — tests teres minor integrity; useful for completing a full posterior rotator cuff assessment alongside subscapularis evaluation

Frequently Asked Questions

What does a positive Gerber’s Lift-Off Test mean?

It means the patient cannot lift the hand away from the lower back, or has significant weakness doing so. This strongly suggests a subscapularis tear — particularly a complete one. A positive test with high specificity (~92%) meaningfully increases the post-test probability of subscapularis pathology and warrants imaging confirmation.

What if the patient can’t get their hand behind their back?

The test is invalid if the patient cannot achieve the starting position. Use the Belly Press Test or Bear Hug Test instead — both are validated alternatives that assess subscapularis function without requiring full internal rotation and extension range of motion.

How does the Lift-Off Test compare to the Belly Press Test?

Both test the subscapularis, but they stress the muscle at different positions in the range of motion. The Lift-Off Test is better for mid-to-lower subscapularis tears; the Bear Hug Test shows higher sensitivity for upper subscapularis tears. Using both gives more complete coverage of the subscapularis tendon footprint.

Can the Lift-Off Test detect partial subscapularis tears?

Partially, but not reliably. Sensitivity for partial tears drops to 18–50% depending on tear size and location. A negative Lift-Off Test does not rule out a partial tear. If partial subscapularis pathology is suspected clinically, MRI is the appropriate next step.

Is a negative Lift-Off Test enough to rule out subscapularis pathology?

No. With sensitivity around 62% for complete tears, a negative result carries a likelihood ratio of ~0.41 — meaningful but not sufficient to rule out pathology when clinical suspicion is high. Correlate with the Belly Press Test, Bear Hug Test, and imaging before concluding the subscapularis is intact.

Why is the subscapularis important for shoulder stability?

The subscapularis is the primary anterior dynamic stabilizer of the glenohumeral joint. It compresses the humeral head against the glenoid and resists anterior translation — particularly in positions of external rotation and abduction where anterior instability risk is highest. A complete subscapularis tear significantly compromises anterior shoulder stability, not just internal rotation strength.

References

1. Gerber C, Krushell RJ. Isolated rupture of the tendon of the subscapularis muscle. Clinical features in 16 cases. J Bone Joint Surg Br. 1991;73(3):389–394.
2. Barth JR, Burkhart SS, De Beer JF. The bear-hug test: a new and sensitive test for diagnosing a subscapularis tear. Arthroscopy. 2006;22(10):1076–1084.
3. Hegedus EJ, Goode AP, Cook CE, et al. Which physical examination tests provide clinicians with the most value when examining the shoulder? Update of a systematic review with meta-analysis of individual tests. Br J Sports Med. 2012;46(14):964–978.
4. Walch G, Boulahia A, Calderone S, Robinson AH. The ‘dropping’ and ‘hornblower’s’ signs in evaluation of rotator-cuff tears. J Bone Joint Surg Br. 1998;80(4):624–628.