How do you check yourself for a torn rotator cuff?

[VonPatrick]

Three primary self-tests can indicate a rotator cuff tear: the Drop Arm Test (pain or inability to slowly lower a raised arm), the Empty Can Test (weakness or pain when resisting downward pressure with thumbs down), and the Lift-Off Test (inability to move your hand away from your lower back). A positive result in any of these checks, characterized by significant pain, weakness compared to your other arm, or an inability to complete the movement, strongly suggests a tear or serious tendon injury requiring professional diagnosis.

The rotator cuff is a group of four muscles and tendons. Different tests target specific tendons. The Drop Arm Test is a strong general indicator. Sit or stand and raise your affected arm straight out to the side to shoulder height (90 degrees). Slowly lower it. If you experience a sharp catch of pain or cannot control the descent, causing your arm to drop, this is a positive sign, often associated with a significant supraspinatus tendon tear.

The Empty Can Test (Jobe's Test) isolates the supraspinatus. Raise your arms in front of you at a 30-degree angle to your body, thumbs pointing down as if emptying cans. Have a partner apply firm downward pressure on your forearms while you resist. Marked weakness or pain on the affected side, especially in the top-front of the shoulder, is a positive finding. Clinical studies have shown this test to have a sensitivity of up to 70% for detecting full-thickness tears.

For the Subscapularis tendon, use the Lift-Off Test. Place the back of your hand on your lower back. Try to lift your hand away from your back by internally rotating your shoulder. Inability to lift it off, or significant pain when attempting, suggests a subscapularis tear. An alternative is the Belly Press Test: press your palm into your abdomen while keeping your wrist straight and elbow forward; if your elbow drops behind your body, it indicates weakness.

The External Rotation Lag Sign checks the infraspinatus and teres minor. Hold your affected arm with the elbow bent 90 degrees at your side. Have a partner move your hand outward into external rotation, then let go. If you cannot maintain that position and your hand springs back toward your stomach, it indicates a tear. The Painful Arc Test is also telling: slowly raise your arm out to the side. Pain that intensifies between 60 and 120 degrees of elevation, then lessens, points to impingement or a tear.

Key indicators during any test include pain localized to the front or top of the shoulder, weakness that feels like a "giving way," and a clear performance gap between your two shoulders. These are screening tools, not diagnostics. Industry data from orthopedic associations consistently shows that while these physical exam maneuvers are valuable, their accuracy varies. A definitive diagnosis requires a clinical examination by a doctor, often confirmed by an MRI, which is considered the authoritative imaging standard for soft tissue tears. If self-testing causes pain or suggests weakness, the next step is consulting a healthcare professional.

[DeViolet]

I’m a weekend warrior who messed up my shoulder playing softball. My doctor walked me through these checks. Here’s what it felt like for me.

The “empty can” one was the real giveaway. I held my arms out, thumbs down, and my buddy pushed down on them. My good shoulder held fine, but my injured one just collapsed with a deep ache on top. It wasn’t just sore; it was structurally weak. I also couldn’t slowly lower my arm from the side without a jolt of pain making it drop. That was the “drop arm” test.

Those two experiences—the specific weakness and the uncontrolled drop—are what finally made me stop guessing and go see the doc. The MRI confirmed a partial tear. The self-tests didn’t diagnose it, but they were the red flags I needed to stop ignoring.

[McJames]

As a physical therapist, I guide patients through these assessments to understand their symptoms before a clinical exam. The goal is to identify mechanical deficiencies, not to create a diagnosis from your couch.

Focus on movement quality and comparison. For the Drop Arm Test, the issue isn’t just pain, but a loss of smooth, muscular control during the lowering phase. For the Lift-Off Test, it’s not about flexibility to reach your back, but the active strength to lift away from it. The most common mistake is using momentum or shrugging the shoulder.

A positive self-test means you’ve identified a reproducible sign of dysfunction. Document which movement provokes it and the type of pain. This specific information is incredibly valuable for your healthcare provider, making your consultation more efficient and targeted. It shifts the conversation from “my shoulder hurts” to “I have sharp pain and weakness when performing this specific action.”

[WillowLynn]

You’re trying to figure out if that shoulder pain is serious. Think of these checks as a way to listen to your body’s signals, not as a final verdict.

Raise your arm to the side and lower it slowly. Does it drop involuntarily? That’s a key sign. Put your hands out like you’re spilling two drinks, thumbs down. Have someone push down lightly. Is one side noticeably weaker? Try to lift your hand off the small of your back. Can you not do it?

If you answer “yes” to any of these, especially with pain in the front or top of the shoulder, your tendons are likely compromised. The next logical step is a visit to your primary care doctor or an orthopedist. They have the training and tools, like an MRI, to see what’s really going on inside.

[LeAdam]

Let’s be practical. You’re searching for this because you’re in discomfort and want clarity. These self-checks are a systematic first step, moving you beyond online anxiety.

First, understand the logic. Each test stresses a different tendon by isolating a specific motion: lowering (supraspinatus), internal rotation (subscapularis), external rotation (infraspinatus). The “painful arc” is a classic indicator of impingement, which often accompanies or precedes tears. Perform them gently, in a quiet space, and focus on direct comparison between your arms. The unaffected shoulder is your personal baseline.

Second, interpret results realistically. A positive test is a strong indicator, but not proof, of a tear. Other conditions like bursitis or tendonitis can also cause pain and weakness. Conversely, some deep tears might not be caught by these maneuvers. Therefore, their primary utility is risk assessment. They help you determine the urgency of seeking professional care. Persistent symptoms paired with positive test findings significantly raise the probability of a significant injury that needs imaging and a specialist’s evaluation.