Why Shoulders Click and Pop

Is Shoulder Clicking Normal?

Yes, for most people, most of the time. A shoulder makes noise every time a tendon crosses a bony ridge, a gas bubble shifts in the joint fluid, or the edge of the shoulder blade catches against the ribcage during a reach or a shrug. None of that indicates damage by itself. What changes the calculus is not the sound — it's whether pain, weakness, or a sense of catching rides along with it.

painless clicking with a full, strong range of motion is not, on its own, a reason to worry. Many people notice it more once they start paying attention — a shoulder that has clicked quietly for years does not usually need investigating just because it was recently noticed. What does warrant a look is a change: clicking that is new, that has started hurting, or that arrived after an injury.

When the Rotator Cuff or a Pinched Tendon Is Behind the Noise

Clicking or a grinding catch that shows up specifically when lifting the arm overhead or reaching behind the back often comes from a rotator cuff tendon rubbing against the underside of the shoulder blade's bony arch — a pattern called impingement — or from irritation of the bursa, the small fluid-filled cushion in that same space 1Ref 1American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Shoulder Impingement / Rotator Cuff Tendinitis.Describes impingement/tendinitis and bursitis as a cause of shoulder catching on overhead motion and the standard nonsurgical management.. Rotator cuff tears are also one of the more common causes of shoulder pain overall, and a tear can produce a distinct catch or clunk as the arm sweeps through a particular arc, often the same few degrees each time 2Ref 2American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Rotator Cuff Tears.Establishes rotator cuff tears as a common cause of shoulder pain that can produce catching/clunking with arm motion..

The usual first-line approach for this kind of clicking is nonsurgical: activity modification, physical therapy aimed at the muscles around the shoulder blade, anti-inflammatories, and sometimes an injection 1Ref 1American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Shoulder Impingement / Rotator Cuff Tendinitis.Describes impingement/tendinitis and bursitis as a cause of shoulder catching on overhead motion and the standard nonsurgical management.. physical therapy is the reasonable first step for clicking that comes with pinching pain overhead, not surgery. That is not a minimization of the problem — it reflects real trial evidence. When surgery for this exact pattern (subacromial decompression) was tested against a placebo procedure and against no treatment at all in a large, well-designed trial, it produced no clinically meaningful advantage over either 5Ref 5Beard DJ, Rees JL, Cook JA, et al. (CSAW) (2018).Arthroscopic subacromial decompression for subacromial shoulder pain (CSAW): a multicentre, pragmatic, parallel group, placebo-controlled, three-group, randomised surgical trial.Supports the claim that subacromial decompression surgery is not clearly superior to placebo or no treatment, favoring conservative care first for impingement-type shoulder pain., which is part of why conservative care is now the standard starting point rather than an interim step on the way to an operation.

When It's the Labrum: Catching, Clicking, and a Sense the Joint Is Loose

A labrum is the ring of soft cartilage that deepens the shallow shoulder socket and helps hold the ball of the joint in place. Catching or a mechanical clunk that arrives together with a sense that the joint is loose, slipping, or about to come out — especially in a shoulder that has dislocated before — points more toward a labral tear than toward simple tendon noise 3Ref 3American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Chronic Shoulder Instability and Dislocation.Supports the link between labral (Bankart) injury, prior dislocation, and recurrent instability, and the rehab-vs-surgery treatment range.. That combination, a shoulder that keeps popping out and feels loose on top of the clicking, deserves its own look, because it usually needs a different plan than tendon-based clicking does: rehabilitation focused on the muscles that stabilize the joint, and surgical repair in cases where the joint keeps giving way 3Ref 3American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Chronic Shoulder Instability and Dislocation.Supports the link between labral (Bankart) injury, prior dislocation, and recurrent instability, and the rehab-vs-surgery treatment range..

This is also the pattern behind SLAP and Bankart tears, the two most common labral injury types, which tend to follow a specific dislocation or repetitive overhead loading rather than showing up out of nowhere.

Frozen Shoulder: Clicking as the Joint Thaws

Frozen shoulder does not usually start as a clicking problem — its hallmark is progressive stiffness that shows up over weeks, not noise. But clicking and popping often appear during the later thawing stage, as the tightened joint capsule loosens and the shoulder regains motion it did not have for months 4Ref 4American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Frozen Shoulder (Adhesive Capsulitis).Supports the freezing/frozen/thawing staging of adhesive capsulitis, used here to explain clicking appearing during the thawing phase.. If clicking follows a period where the shoulder was unusually stiff rather than painful-and-loose, frozen shoulder's freezing, frozen, and thawing phases are worth reading about before assuming the noise means new damage — it may just be an old joint moving again.

The Shoulder Blade Itself Can Be the Source

Not every click comes from inside the ball-and-socket joint. The shoulder blade glides over the ribcage every time the arm moves, and that gliding surface can catch or grind on its own, a pattern sometimes called scapular crepitus or, when a bursa there gets inflamed, snapping scapula. It is common in people who do repetitive overhead work or lifting and often responds to the same kind of postural and scapular-strengthening physical therapy used for rotator cuff clicking, without necessarily meaning anything is torn.

How Clinicians Sort Out the Cause

A clinician working through shoulder clicking starts with the pattern: which arm position triggers it, whether pain rides along, whether the shoulder ever felt like it slipped, and whether strength has changed. A handful of specific hands-on tests can point toward impingement, a cuff tear, or instability before any imaging happens. Making sense of shoulder pain more broadly — including the other things besides clicking that can be going on — is worth reading if pain, not noise, is the main complaint.

Imaging is not usually the first step. When it is warranted, an MRI can show labral and rotator cuff detail that an X-ray cannot, but shoulder MRI cost varies enough by facility and imaging center that it is worth checking pricing before scheduling one, especially if it is being ordered electively rather than urgently.

What Usually Happens Next

For clicking without pain, weakness, or a sense of looseness, the reasonable path is simply to keep moving the shoulder through its normal range and not restrict activity around a noise alone. For clicking that comes with pain on overhead motion, a course of physical therapy is the standard starting point and resolves the large majority of impingement-type presentations without surgery 1Ref 1American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Shoulder Impingement / Rotator Cuff Tendinitis.Describes impingement/tendinitis and bursitis as a cause of shoulder catching on overhead motion and the standard nonsurgical management. 2Ref 2American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Rotator Cuff Tears.Establishes rotator cuff tears as a common cause of shoulder pain that can produce catching/clunking with arm motion.. For clicking that comes with a shoulder that feels like it might come out of place, that combination is worth a dedicated evaluation for instability rather than being folded into general shoulder-pain care, since the treatment path — and the urgency — is different.