The condition now called frozen shoulder was described in medical writing by 1872, but the familiar name came later. Ernest Codman used “frozen shoulder” in 1934, building on earlier descriptions of painful, stiff shoulders.
That history explains why sources sometimes give different dates: one points to an early account of the condition, while another marks the naming of the syndrome. This article separates those milestones, explains how medical thinking changed, and clarifies what the older terms mean today. You will also learn why “adhesive capsulitis” is not a perfect description, how clinicians distinguish the condition from other shoulder problems, and what practical steps to take if your shoulder is becoming stiff.
When was frozen shoulder discovered?
There is no single agreed date for the discovery of frozen shoulder. The earliest commonly cited medical description appeared in 1872, when French surgeon Simon-Emmanuel Duplay described a painful shoulder condition he called periarthritis scapulohumerale. Ernest Codman later used the name “frozen shoulder” in 1934.
Those dates refer to different milestones. Duplay’s account was an early description of a similar clinical problem; Codman’s work helped establish the name and describe the pattern recognized by doctors today. So, if the question means “When was the condition first described?”, 1872 is the commonly cited answer. If it means “When did the name frozen shoulder enter medical use?”, the answer is 1934.
Historical records cannot prove that no one recognized the condition earlier. They show when clinicians put descriptions and terminology into medical writing. That distinction matters because painful shoulder stiffness can have several causes, and older doctors did not always separate them as precisely as clinicians try to do now.
Why do sources give different dates?
Medical conditions are rarely “discovered” in one moment. A physician may describe symptoms, another may give them a name, and later researchers may identify the affected tissues or distinguish the problem from similar disorders. Frozen shoulder’s history follows that pattern.
Duplay’s 1872 term, periarthritis scapulohumerale, meant inflammation around the shoulder joint. It was a broad label rather than an exact match for every modern case of frozen shoulder. Codman’s 1934 account brought attention to a recognizable pattern: gradual shoulder pain and stiffness, with particular difficulty raising the arm and rotating it outward.
The difference between a first description and a settled diagnosis is important. A nineteenth-century report may resemble frozen shoulder without meeting every criterion used today. Later clinical language made it easier to discuss the condition, but terminology continued to change as doctors studied shoulder anatomy and other sources of pain.
Three useful historical milestones
| Milestone | What it refers to | Best answer for |
|---|---|---|
| 1872: Duplay’s description | An early account of a painful shoulder disorder called periarthritis scapulohumerale | People asking about an early medical description |
| 1934: Codman’s use of “frozen shoulder” | A recognizable name and clinical description became prominent in medical writing | People asking when the familiar name appeared |
| 1945: Neviaser’s “adhesive capsulitis” | A more specific medical term entered the literature | People asking where the alternate name came from |
The dates are useful landmarks, not proof that each writer identified exactly the same disease process. The wording and boundaries of the diagnosis developed over time.
How Codman’s description shaped the familiar name
Ernest Codman was an American surgeon known for work on shoulder disorders. In 1934, he used the phrase “frozen shoulder” and described a gradual problem marked by pain and restricted movement. The name caught on because it gave doctors and patients a plain-language way to refer to a shoulder that seemed increasingly difficult to move.
Codman’s account also drew attention to a feature that remains useful: movement can be limited even when an X-ray does not show an obvious joint problem. A normal X-ray does not prove frozen shoulder, but it can help rule out some other explanations, such as certain forms of arthritis or a fracture.
The word “frozen” is vivid, but it can mislead. The shoulder is not locked by ice, and the joint does not simply stop working overnight. In typical cases, pain and stiffness build gradually. The tissues around the joint become inflamed and tight, limiting how far the arm can move.
Where “adhesive capsulitis” fits in the history
In 1945, American orthopedic surgeon Julius Neviaser used the term adhesive capsulitis in a published account of shoulder findings. The phrase refers to the joint capsule, a sleeve of tissue surrounding the shoulder joint, becoming inflamed and stiff. It remains a common medical name for frozen shoulder.
However, “adhesive” can give the wrong impression that bands of scar tissue simply glue the joint together in every case. Modern understanding emphasizes inflammation and thickening or tightening of the capsule and nearby tissues. Adhesions may be part of the picture, but the name should not be taken as a complete explanation of what happens in every shoulder.
This is one reason you may see both terms in medical articles and records. Frozen shoulder is the familiar everyday name. Adhesive capsulitis is the clinical term often used for the same broad condition, although specialists may be careful about the exact diagnosis and stage.
What frozen shoulder means in current medicine
Frozen shoulder is a condition in which pain and stiffness restrict movement of the shoulder joint. A key feature is that both active movement and passive movement are limited. Active movement is what you can do using your own muscles; passive movement is what another person can move your arm through while you relax.
That distinction helps clinicians tell frozen shoulder apart from some other problems. For example, a person with a rotator cuff injury may struggle to lift the arm actively because of weakness or pain, while someone else may be able to move the relaxed arm farther. In frozen shoulder, movement is commonly restricted in both situations, especially outward rotation.
The shoulder capsule and nearby connective tissues are involved, but diagnosis is not made from one image or one symptom alone. A clinician considers how the problem began, which movements are limited, the examination findings, and whether another condition better explains the symptoms. Imaging may be used to check for other causes, rather than to confirm frozen shoulder by itself.
How the condition is usually described over time
Doctors often explain frozen shoulder using three phases. These phases are a useful way to describe changing symptoms, but they are not a precise timetable. People do not all move through them at the same speed, and the stages can overlap.
- Painful or “freezing” phase: Pain gradually increases, and shoulder movement starts to become more difficult. Pain may be noticeable at rest or at night, and reaching behind the back can become troublesome.
- Stiff or “frozen” phase: Pain may ease for some people, but stiffness remains prominent. Everyday tasks such as dressing, reaching a shelf, or fastening clothing may still be difficult.
- Recovery or “thawing” phase: Movement gradually improves. Recovery can be slow, and the amount of movement restored varies from person to person.
These labels do not guarantee that symptoms will follow a neat sequence or disappear on a fixed schedule. A common misconception is that every case resolves completely without help after a set period. Some people improve substantially, while others have persistent stiffness or need treatment to manage symptoms and restore function.
Frozen shoulder compared with related terms
Several names appear in the history and current discussion of shoulder stiffness. They are related, but they are not always interchangeable in meaning.
| Term | Meaning | Best used for |
|---|---|---|
| Frozen shoulder | Common name for a painful, stiff shoulder with restricted joint movement | Everyday conversation and general health information |
| Adhesive capsulitis | Clinical label emphasizing stiffness and changes involving the joint capsule | Medical records and clinical discussion |
| Periarthritis scapulohumerale | Duplay’s historical term for inflammation around the shoulder | Understanding nineteenth-century descriptions |
| Rotator cuff disorder | A problem involving tendons that help move and stabilize the shoulder | Considering a different cause of shoulder pain or weakness |
A shoulder that hurts or feels stiff is not automatically frozen shoulder. Rotator cuff problems, arthritis, injury, and other conditions can produce overlapping symptoms. The distinction matters because the best assessment and care depend on the cause.
What most people get wrong about the history and diagnosis
The most common historical mistake is giving one date as if it answers every version of the question. 1872 refers to an early description; 1934 refers to Codman’s use of the familiar name. Neither date means that frozen shoulder suddenly began or that earlier people could not have had the condition.
A second misconception is that “frozen” means the shoulder is permanently stuck. The term describes restricted movement, not an inevitable outcome. The course varies, and an assessment can help identify what is limiting your shoulder and what support may be appropriate.
A third mistake is assuming that a normal X-ray settles the diagnosis. It can help exclude some other problems, but a clinician still needs to assess movement and symptoms. Likewise, a shoulder that hurts only when you move it is not enough by itself to establish frozen shoulder.
What to do if your shoulder is becoming stiff
If shoulder movement is gradually shrinking, note which tasks have changed and whether another person can move your arm farther than you can. These details can help a clinician assess the pattern. Do not force the arm through sharp pain to “break” the stiffness; aggressive stretching may irritate a painful shoulder.
- Arrange an assessment if pain or stiffness is interfering with sleep, dressing, work, or everyday tasks, or if it is not improving. A clinician can check for frozen shoulder and other causes.
- Describe the timeline clearly. Say when symptoms started, whether pain or stiffness came first, and which directions of movement are hardest.
- Ask what movement is appropriate for your situation. Gentle, tolerable movement may be advised, but the right approach depends on the pain level and diagnosis.
- Seek urgent care after a serious injury or if you have sudden severe pain, marked weakness, fever, or other concerning symptoms. Those features should not be assumed to be routine frozen shoulder.
A practical tip: compare your reach only from day to day, not repeatedly within the same hour. Frequent testing can aggravate symptoms and make small normal fluctuations seem alarming. A simple note about sleep, pain, and daily tasks gives a more useful picture of change.
Why the history still matters
The history shows how medicine moves from describing a pattern to refining its explanation. Duplay’s term captured a broad problem around the shoulder. Codman’s familiar label made the pattern easier to recognize, and later use of adhesive capsulitis drew attention to the joint capsule.
That progression also explains why present-day sources may use different wording. The names reflect different stages of medical discussion, not necessarily competing claims about one precise moment. For readers, the most useful point is simple: frozen shoulder is a clinical pattern of pain and restricted movement, and similar symptoms can have other causes.
Knowing the history can answer the date question, but it cannot diagnose an individual shoulder. If stiffness is limiting your daily life, the practical next step is an examination that considers both frozen shoulder and other possible explanations.
The answer to “when was frozen shoulder discovered” depends on what you mean: Duplay described a similar condition in 1872, while Codman used the familiar name in 1934. The term adhesive capsulitis entered medical writing later, in 1945.
If your shoulder is becoming painful or stiff, do not assume the name tells you the cause or that forceful stretching is the solution. Note which movements are limited and arrange a clinical assessment if symptoms affect daily activities.