Capsular pattern

Joints do not move in just one direction. The shoulder alone can lift forward, move out to the side, and rotate inward and outward. When a problem develops inside a joint or in its capsule, however, movement often becomes limited earlier and more severely in certain directions, rather than decreasing equally in every direction. This recurring order and proportion of movement restrictions in each joint is called a capsular pattern.

The concept became widely known through James Cyriax, who systematized it in works including *Textbook of Orthopaedic Medicine* (1947). He believed that when the joint capsule stiffens or becomes inflamed, the entire capsule contracts, reducing movement in characteristic proportions. This is why it is called a “pattern.”

The following are the patterns most commonly presented in textbooks. Rather than focusing on specific numbers, it is easier to understand them in terms of which direction loses the most movement, followed by the others.

• Shoulder (glenohumeral joint): Outward rotation of the arm is most restricted, followed by movement out to the side, then inward rotation. This is most typically discussed in relation to Adhesive capsulitis.
• Hip: Inward rotation of the leg is most restricted, followed by flexion, then movement out to the side.
• Knee: Flexion is more restricted than extension.
• Elbow: As with the knee, flexion is more restricted than extension.

The key point is that the pattern differs from joint to joint. These criteria are a guide compiled from clinical experience, so the degree and order of restrictions may vary somewhat from person to person. They provide a reference for recognizing the overall pattern, not an absolute standard that can determine a condition on its own.

There is also an opposing concept. When only one or two directions are blocked in a way that does not match the characteristic order for that joint, it is called a non-capsular pattern. Cyriax attributed these patterns to problems with ligaments or to something catching inside the joint. One example is a small fragment lodged inside a joint that catches only at a particular angle.

In short, the distinction is as follows.

• Movement decreases in several directions in a characteristic order. This points toward a problem involving the entire joint capsule.
• Movement is distinctly blocked in just one direction. This points toward catching inside the joint or a problem with a particular structure.

The assessment also considers end-feel: the quality of resistance felt by the examiner's hands at the limit of movement. The interpretation differs depending on whether the resistance feels taut like leather or like meeting a hard wall. Reading both the movement pattern and the sensation at its limit is part of the Cyriax approach to assessment. His life and approach are covered separately in James Cyriax.

Integrative Manual Therapy presents this concept as something established during the development of joint mobilization. It explains that therapists such as Stanley V. Paris, Freddy Kaltenborn, John Mennell, and Geoffrey Maitland developed mobilization techniques to increase joint movement and, in the process, came to recognize recurring patterns of restriction across patients. Mennell's discussion of joints can be found in James B. Mennell.

This approach emphasizes that the joint capsule is itself fascial tissue. It therefore regards gently releasing the fascia to reduce tissue resistance as particularly suitable for restrictions caused by capsular stiffness, alongside methods that directly stretch the joint. Another feature is distinguishing between movement restricted by muscle tension outside the joint and movement restricted by stiffness of the capsule itself. Related techniques are described in Articular fascial release.

For someone receiving treatment, this concept is not often explicitly apparent. It usually comes into play in situations like these.

• The practitioner slowly moves the joint in several directions, comparing where movement is restricted and by how much.
• They check whether there is a difference between movement you perform yourself and movement performed for you by the practitioner.
• They consider their approach by examining whether the order of restricted directions follows a familiar pattern or whether only one unexpected direction is blocked.

This process is usually gentle and is not intended to cause pain. It helps turn a broadly described difficulty such as “I can't lift my arm” into a more specific description of “which direction, and by how much.” Describing exactly which movements bother you most during a consultation therefore makes it easier for the practitioner to understand your condition.

• It is only a pattern in one joint, not the whole picture. Even with the same shoulder restriction, the sensation and treatment approach differ depending on whether the cause is muscle tension or the joint capsule. Practitioners therefore consider multiple pieces of information together.
• Trying it yourself is not recommended. Forcing a joint to its limit may irritate it instead. If you are curious, ask during an assessment.
• If your movement has noticeably decreased, have it checked first. If you have throbbing pain at night, a swollen and hot joint, or a sudden restriction in movement, it is best to have a healthcare professional assess it first.