8.1 Joint Mobilization and Manipulation

Joint Mobilization and Manipulation

Manual therapy can be used to address pain and restricted movement when a musculoskeletal examination supports it. Select a technique that helps a functional task or active rehabilitation. Reassess the comparable movement or task rather than inferring success from a change in how the joint feels to the clinician.

Osteokinematics describes the gross movement of bones, such as active or passive shoulder abduction. Arthrokinematics describes motion between joint surfaces, such as roll, glide and spin. An accessory glide can be assessed and applied passively. A painful or limited physiological movement can reflect guarding, joint or soft-tissue stiffness, or other pathology. Comparing active motion, passive motion and accessory testing helps form a treatment hypothesis.

The Maitland Oscillatory Mobilization System

The Maitland grades describe the size of a passive movement and where it is delivered in the available range. An examination can document P1, the first onset of the comparable pain, and R1, the first appreciable resistance. Document the later limits according to what stops the movement. These are clinical observations that can change with joint position, symptoms and guarding. They do not measure structural damage or establish the phase of tissue healing.

When comparable pain or guarding occurs well before resistance, try a gentle range or active movement first. If stiffness is the main limiting feature and symptoms are less irritable, a trial that engages resistance may be reasonable. The order of pain and resistance does not establish that a condition is acute or chronic and cannot make thrust manipulation appropriate on its own. For example, slow, painless stiffness can still be associated with a healing fracture or bone fragility.

The Kaltenborn Translatory Mobilization System

Kaltenborn uses linear joint play movements described relative to a treatment plane on the concave articular partner. The plane is perpendicular to a line from the convex partner's axis of rotation to the center of the concave surface. It moves with the concave partner. A translatory glide is parallel to this plane. Traction is perpendicular and away from it, and compression is perpendicular and toward it. The convex–concave model predicts a glide opposite the roll when a convex partner moves on a fixed concave partner, and in the same direction when a concave partner moves on a fixed convex partner. Use it as a starting model and check joint position, symptoms and functional response. For example, in a small adhesive capsulitis trial, posterior shoulder mobilization improved external rotation more than the anterior glide predicted by a simple geometry rule.

The systems use different parameters. A Maitland Grade II describes an oscillation and its part of range. A Kaltenborn Grade II describes the amount of slack and tension taken up by a translation. Grade numbers cannot be substituted across systems. For example, Grade II traction taken to the first stop for testing can feel different from the lighter Grade II slack-zone input chosen for pain relief.

Mechanical and Pain Responses

A mobilization applies a force that can produce motion and temporarily load periarticular tissues. A change in motion after treatment can reflect several influences, including altered symptoms, muscle activity or movement tolerance. The response cannot establish that adhesions have broken, a joint has been repositioned or the capsule has permanently lengthened.

An audible pop can occur with manipulation. Real-time MRI during metacarpophalangeal joint distraction linked the cracking event to rapid cavity formation. That experimental result does not identify a particular spinal segment as the source of a sound. Clinical improvement can occur without a pop, and the sound is not a reason to repeat or escalate a thrust.

Mechanical input and the treatment context can affect pain processing. Local and remote changes in pain sensitivity, as well as autonomic responses, have been measured in some studies. The periaqueductal gray (PAG) is a midbrain component of descending pain modulation, with connections to the rostral ventromedial medulla. A change in pressure pain threshold or skin conductance does not identify PAG activation or prove a specific mechanism for a given grade. Use the patient's symptoms and task performance to judge whether the intervention is helping.

Cervical Vascular Reasoning and Referral

Use the IFOMPT Cervical Framework (2020 with the 2023 addendum) before planned cervical musculoskeletal intervention. Start with history. Ask about the onset, course and character of head or neck pain, recent trauma, and new or transient neurological or visual symptoms. Review relevant vascular history and risk factors, such as prior vascular disease, hypertension, smoking, recent cervical trauma and known arteriopathy. Risk factors inform suspicion and treatment planning. An absence of recognized risk factors cannot exclude dissection.

Recognize concerning combinations. An unfamiliar or abrupt head or neck pain can precede cerebral ischemic symptoms. Unilateral head, face or neck pain with new ipsilateral ptosis and miosis raises concern for internal carotid artery dissection. Unusual posterior neck or occipital pain with new diplopia, dysarthria, ataxia or transient focal findings raises concern for a posterior circulation process, including vertebral artery dissection. Patterns can overlap. Isolated dizziness is nonspecific, and a normal interval examination cannot dismiss a concerning transient neurological event.

The framework removed provocative positional tests, including sustained extension–rotation tests such as de Kleyn's, because their predictive ability is inadequate for screening. They should not be used to clear the patient for manual therapy or traction. The framework's targeted observations inform referral or treatment decisions. Normal blood pressure or neurological findings cannot independently exclude a vascular disorder.

Worked comparison. New severe occipital pain after a collision plus a transient episode of double vision and marked unsteadiness calls for immediate medical evaluation even if the episode has resolved. In a different patient with longstanding movement-related neck discomfort and vague, nonacute lightheadedness, ask about triggers, timing and associated signs. If the history does not already require emergency referral, the clinician can use appropriate nonprovocative examination to decide whether medical assessment is needed before proceeding.

Indications, Precautions and Reassessment

Consider mobilization for a defined problem, such as restricted shoulder movement after appropriate assessment or ankle stiffness after an injury has healed enough for loading. Compare the proposed benefit with education, exercise and other options. Findings that suggest an unhealed fracture, dislocation, significant instability, local infection, pathological fracture or acute/progressive neurological compromise take priority over loading the involved site. Follow the appropriate medical or emergency pathway. Avoid forcing instability tests when the history already warrants referral.

Assess technique-specific factors such as bone fragility, active inflammation, bleeding risk, joint hypermobility, postoperative restrictions and guarding. For example, an implant and its postoperative plan affect which loads are suitable, while symptomatic hypermobility can call for stability training instead of stretching that segment. A fragility history raises concern about high-force loading. Adjust or avoid treatment according to the affected site, condition and force, and obtain relevant medical information when the risk is uncertain. If the patient declines, choose another option together.

Worked Case: Painful Shoulder With Restricted Motion

A 54-year-old has four months of right shoulder stiffness with restricted active and passive elevation and marked loss of external rotation. Reaching overhead is the main concern. On passive abduction, familiar pain and guarding begin at about 75°, before a firm resistance can be assessed. A previous evaluation supports adhesive capsulitis, and there are no findings requiring urgent investigation.

Start with a tolerable active-assisted movement and, if helpful, a trial of small Grade I oscillations or Grade II oscillations in a comfortable part of range. In the Kaltenborn system a gentle traction trial would stay in Grade I or the Grade II slack zone. Recheck the patient's reaching task and symptoms during and after the session. As irritability decreases, reassess whether restricted passive motion still limits reach. A graded trial into resistance can then be considered alongside exercise, based on the response and goals. The painful presentation calls for a gentler initial dose, without assigning a mechanism or a fixed timetable to the case.