Shoulder Stiffness Returned? When It Could Be Arthritis—and What PT Can Do

A shoulder that feels stiff, painful, or noisy is not automatically arthritic. But when deep shoulder pain, night pain, or loss of motion keeps returning, an evaluation can help distinguish glenohumeral osteoarthritis from other common shoulder conditions—and determine whether physical therapy for shoulder arthritis belongs in your treatment plan.

A stiff shoulder after sleeping awkwardly or lifting groceries may settle quickly. A shoulder that repeatedly interferes with dressing, reaching, sleeping, work, or recreation deserves a closer look.

That does not mean every painful shoulder needs an MRI, and it does not mean every click is arthritis. A 2026 review in JAMA Internal Medicine noted that most nontraumatic shoulder pain arises from tissues around the joint rather than the glenohumeral joint itself. Rotator cuff–related pain, adhesive capsulitis, neck-related symptoms, and other conditions can resemble arthritis (Haas et al., 2026).

The useful question is not, “Does my shoulder make noise?” It is, “What is limiting my shoulder now, and what should I do about it?”

What is glenohumeral osteoarthritis?

The glenohumeral joint is the ball-and-socket joint formed by the head of the upper-arm bone and the socket of the shoulder blade. Osteoarthritis involves deterioration of the joint’s articular cartilage along with other changes in the joint and surrounding bone.

The condition becomes more common with age and typically affects adults older than 50, although prior fractures, dislocations, surgery, or other shoulder problems can contribute to arthritis in younger adults. Rheumatoid arthritis, rotator cuff tear arthropathy, avascular necrosis, and post-traumatic arthritis are distinct conditions and may require different management.

Common features of symptomatic glenohumeral osteoarthritis can include:

• Deep pain centered toward the side or back of the shoulder
• Pain that becomes more noticeable with activity or at night
• Progressive difficulty reaching overhead, behind the back, or across the body
• Loss of both active motion and motion produced with assistance
• Grinding, clicking, or snapping accompanied by pain or stiffness
• Reduced strength or difficulty completing everyday arm tasks

Noise without pain or functional loss is not enough to establish arthritis. Even X-ray changes do not always explain a person’s symptoms. The American Academy of Orthopaedic Surgeons notes that some people have arthritic findings on X-rays but little pain attributable to the joint itself (AAOS, n.d.).

How is shoulder arthritis identified?

The 2023 American Physical Therapy Association clinical practice guideline supports using a combination of history, physical examination, and radiographs to help differentiate glenohumeral osteoarthritis from similar conditions. A common clinical pattern includes shoulder pain lasting more than three months and a global reduction in motion, with passive external rotation often especially limited (Michener et al., 2023).

An assessment may examine:

• Where the pain occurs and which activities provoke it
• Active and passive shoulder range of motion
• Rotator cuff, shoulder-blade, and arm strength
• Whether symptoms may be coming from the neck or another region
• How the shoulder affects sleep, dressing, lifting, work, and recreation
• Whether findings suggest a need for X-rays, additional imaging, or referral

MRI may help when the diagnosis remains unclear, but it is not automatically the first step for every atraumatic painful shoulder. Current primary-care guidance recommends avoiding early imaging when there has been no significant trauma and no suspicious clinical feature because structural findings may not correlate with symptoms or change initial care (Haas et al., 2026).

What the 2024 “early PT” study actually found

The original version of this article described the Kane et al. study as evidence that patients with mild arthritis improved most when physical therapy began early. That interpretation was too strong.

Kane and colleagues surveyed 190 orthopedic surgeons and 39 physical therapists about the perceived usefulness of PT at different radiographic stages of glenohumeral arthritis. Both professional groups generally agreed that PT can benefit patients with mild arthritis and may be less beneficial when radiographic arthritis is advanced. They disagreed on several questions involving moderate arthritis and preoperative PT (Kane et al., 2024).

This is clinically interesting, but it remains a survey of expert opinion. The study did not assign patients to treatment, measure changes in pain or function, or establish that starting PT early prevents progression or surgery. Its authors specifically called for more research on PT for moderate arthritis.

The survey also found agreement that patients with severe glenohumeral arthritis should not be required to “fail” PT merely to obtain insurance approval for surgery. That distinction matters: physical therapy can be a reasonable nonsurgical option without becoming an administrative delay for someone whose condition already warrants a surgical discussion.

What direct rehabilitation research shows

The evidence is promising but not definitive.

The 2023 APTA guideline concluded that physical therapist services may benefit people with glenohumeral osteoarthritis who have not undergone shoulder replacement. However, the guideline classified the evidence for nonsurgical PT as insufficient and did not identify one physical therapy intervention as superior to the others (Michener et al., 2023).

A 2022 feasibility study enrolled 20 people with glenohumeral osteoarthritis or rotator cuff tear arthropathy who were eligible for shoulder replacement. Eighteen completed a 12-week program consisting of one supervised physical therapy session and two home sessions each week. Fifteen of the 18 completers had glenohumeral osteoarthritis. No exercise-related adverse events were recorded, adherence to supervised sessions was high, and average patient-reported shoulder scores improved (Larsen et al., 2022).

Those findings show that progressive exercise can be feasible even for some people being considered for surgery. They do not prove effectiveness because the study was small, included two diagnoses, and had no comparison group.

A randomized trial published online in 2026 compared five weeks of exercise with the same exercise program plus manual therapy in adults with glenohumeral arthritis. Both groups improved, while adding manual therapy appeared to provide additional benefit for some pain, motion, strength, or functional outcomes (Gayretli Atan et al., 2026). This trial adds useful condition-specific evidence, but its small sample and short treatment period mean it should not be treated as a universal protocol or a guarantee of long-term benefit.

Physical therapy does not regrow lost cartilage, erase every X-ray finding, or guarantee that surgery will never be needed. Its practical purpose is to improve symptoms and function where possible, clarify how the shoulder responds to nonsurgical care, and help you make informed decisions about the next step.

What might a PT plan include?

There is no single exercise sequence that every person with shoulder arthritis should perform. The choice and dose should reflect the examination, arthritis severity, symptom irritability, other shoulder findings, medical history, and personal goals.

A plan may include:

• Gentle mobility work directed toward the motions that are restricted and relevant
• Progressive rotator cuff and shoulder-blade strengthening
• Graded practice of reaching, lifting, carrying, or sport-specific tasks
• Manual therapy when it improves comfort or helps movement practice
• Activity and sleep-position modifications during a flare
• A concise home program with clear pain-response and progression rules
• Periodic measurement of range of motion, strength, and patient-selected functional goals

Treatment should change when the shoulder changes. If exercises repeatedly produce a lasting flare, the answer is not automatically to stop all movement or push harder. The load, range, technique, frequency, or exercise selection may need adjustment.

When should you return to physical therapy?

Consider a physical therapy evaluation or reassessment when:

• Shoulder pain or stiffness keeps returning after temporary improvement
• You are losing the ability to reach overhead or behind your back
• Night pain is disrupting sleep
• You have begun avoiding work, exercise, household, or recreational activities
• An old shoulder exercise program no longer helps or now aggravates symptoms
• An injection reduced pain temporarily, but the same limitations returned
• You have an arthritis diagnosis but no current plan for motion, strength, or activity progression
• You are considering surgery and need coordinated preoperative or postoperative planning

A reassessment is especially useful when the diagnosis was assumed rather than confirmed. The shoulder may be limited by arthritis, but it may also involve the rotator cuff, adhesive capsulitis, the neck, or more than one condition.

When PT should not be the only next step

Seek prompt medical evaluation for shoulder pain following major trauma; an obvious deformity or suspected dislocation; a hot, red, markedly swollen joint; fever or unexplained weight loss; a history of cancer with new unexplained pain; sudden or progressive arm weakness or numbness; or severe, rapidly worsening pain.

Shoulder or arm discomfort accompanied by chest pressure, shortness of breath, sweating, nausea, or other possible cardiac symptoms requires emergency evaluation.

An orthopedic consultation may also be appropriate when confirmed advanced arthritis causes substantial pain and disability despite appropriate nonsurgical care. Returning to PT does not mean every patient must repeat unsuccessful treatment before discussing other options.

The bottom line

A painful, stiff shoulder should not be dismissed as aging—but it should not be labeled arthritis from clicking alone. A focused examination can help identify whether the glenohumeral joint is the likely source, whether imaging or referral is appropriate, and which activities need to be restored.

Current evidence supports physical therapy for shoulder arthritis as a reasonable nonsurgical option for selected patients, while also showing that the condition-specific evidence base remains limited. The most defensible plan is individualized, measured, and reassessed. If pain or motion loss has returned, an updated evaluation is more useful than restarting an old routine without knowing what has changed.