Hypomobility means a joint moves less than it should: a shoulder won’t lift all the way, or a knee won’t straighten fully. It sits at the opposite end of the same scale as being unusually flexible, or “double-jointed.”1Dr Alison Grimaldi. Identifying joint hypermobility syndromes and measuring the impact The word describes what a joint is doing rather than diagnosing why, so the useful question is what is holding it back. Causes range from long immobility and scarring to arthritis, frozen shoulder, nerve conditions, and diabetes. In most cases the restriction responds to steady, repeated movement, which is why moving the joint is both the main treatment and the best prevention.
What Normal Joint Movement Looks Like
Range of motion is how far a joint can bend, straighten, or rotate, usually measured in degrees. There is no single normal number. Women tend to have more joint movement than men in nearly every joint and every age group.2PubMed. Range of motion measurements: reference values and a database for comparison studies
Range of motion also shrinks with age in both men and women.3PubMed. Range of motion measurements: reference values and a database for comparison studies Body fat, height, and leg strength influence flexibility too.4PubMed Central. Whole-body patterns of the range of joint motion in young adults: masculine type and feminine type So having a little less movement than a young athlete is not automatically hypomobility.
That is why “reduced” is judged against what is normal for you. A clinician often compares the stiff joint with the same joint on your other side, since that side shows what is normal for your body, age, and build. The comparison is less useful when both sides are affected, as with arthritis in both knees. Then the clinician leans more on typical ranges and your history.
How much the loss gets in the way of daily life usually matters more than the number. Signs of a truly restricted joint include trouble reaching a back pocket or fastening a bra with a stiff shoulder, a knee that won’t straighten fully when you stand, or struggling to turn your head to check a blind spot while driving.
What Causes Hypomobility
The simplest cause is not moving. A joint kept still for a long time steadily stiffens; in animals it lost about 4 degrees a week for 16 weeks before leveling off.5PubMed Central. Extent and direction of joint motion limitation after prolonged immobility: an experimental study in the rat The loss mostly affected straightening the joint rather than bending it.6PubMed Central. Extent and direction of joint motion limitation after prolonged immobility: an experimental study in the rat Casts, slings, bed rest, or simply guarding a sore joint can all start the process.
Scarring is another route. After trauma or surgery, large joints like the shoulder, elbow, hip, and knee can form scar tissue that locks movement.7PubMed. Arthrofibrosis and large joint scarring Stiffness after knee replacement is a common example.8PubMed Central. The results of knee manipulation for stiffness after total knee arthroplasty with or without an intra-articular steroid injection
Arthritis plays a big part as well. In early knee and hip osteoarthritis, bony spurs, joint narrowing, pain, and higher body weight are linked to less movement.9PubMed. Determinants of range of joint motion in patients with early symptomatic osteoarthritis of the hip and/or knee: an exploratory study in the CHECK cohort Frozen shoulder (adhesive capsulitis) is a stiff, painful shoulder whose lining tightens.10PubMed. Reliability of stiffness measured in glenohumeral joint and its application to assess the effect of end-range mobilization in subjects with adhesive capsulitis Ankylosing spondylitis is an inflammatory disease of the spine and pelvic joints that can fuse vertebrae and stiffen the back.11Wildflower Physical Therapy & Wellness. Understanding Ankylosing Spondylitis: A Progressive Condition That Challenges Traditional Treatment Approaches
Nerve, muscle, and metabolic conditions contribute too. Stroke, spinal cord injury, cerebral palsy, and muscular dystrophy can cause a contracture, a permanent shortening of muscle and tendon.12PubMed Central. Muscle contracture and passive mechanics in cerebral palsy Unlike ordinary stiffness, which often loosens with warming up or gentle movement, a contracture does not give way to simple stretching.
High blood sugar makes collagen stick together and resist normal breakdown.13Cleveland Clinic Journal of Medicine. Stiff hands in a man with type 1 diabetes People with diabetes can develop stiff hands with tight, waxy skin and limited finger movement.14PubMed Central. When Diabetes Mimics Scleroderma: Cheiroarthropathy and Neuropathic Digital Erosions in Type 2 Diabetes Some babies are born with stiff joints in two or more body areas because they moved too little in the womb.15PubMed. Muscle and joint function in children living with arthrogryposis multiplex congenita: A scoping review This birth condition does not worsen over time.16PubMed Central. Arthrogryposis Multiplex Congenita: Multiple Congenital Joint Contractures
One stiff joint often has several causes at once. An injury causes pain, pain makes you use the joint less, and the lack of use adds its own stiffness. If only one cause is treated, such as the pain, the others keep going, which is one reason stiffness sometimes lingers despite treatment.
Some of these causes can be reversed more than others. Stiffness from disuse or recent scarring usually improves with treatment, since the tissue is still adaptable and responds to steady, repeated movement. Bony changes, such as spurs or fused vertebrae, set a physical limit on how much movement can return. Even then, treatment can still ease pain and keep the movement that remains. Diabetes-related stiffness may benefit from good blood sugar control, because high sugar is part of what stiffens the tissue, though how much movement returns varies.
Symptoms and Knock-On Effects
Typical signs are stiffness, a hard stop before the normal end of movement, and pain when you push past it. Morning stiffness is common in hip arthritis with reduced movement.17PubMed. Determinants of range of joint motion in patients with early symptomatic osteoarthritis of the hip and/or knee: an exploratory study in the CHECK cohort Stiff arthritic knees can also come with a grinding or crackling feeling.18PubMed. Determinants of range of joint motion in patients with early symptomatic osteoarthritis of the hip and/or knee: an exploratory study in the CHECK cohort
Many movements need several joints working together, so if one doesn’t do its share, its neighbors move more.19WikiMSK. Hypomobility and Stiffness A stiff hip that won’t extend can push the lower back into overarching when walking.20WikiMSK. Hypomobility and Stiffness Over time the neighboring joint can become painful or overused.21WikiMSK. Hypomobility and Stiffness When the spine curves forward with age, the pelvis, hips, knees, and ankles adjust in turn, which can wear the hip, overload the kneecap, and strain the Achilles tendon.22PubMed Central. Biomechanical compensatory chain and residual compensation potential in aging spinal deformity: a narrative review and multimodal assessment framework
That is why your back may hurt when the real problem is your hip. If only the painful spot is treated, the source may be missed and the pain tends to return once the treatment wears off. A good therapist will check the joints above and below the painful area, and it is reasonable to ask for this if the pain keeps coming back.
Fear of moving feeds the problem. Pain makes many people avoid moving a joint, which is a natural protective response. But avoidance adds more stiffness, which makes the next movement hurt more and encourages even more avoidance. Gentle guided movement from a therapist can break the cycle, because it shows you the joint can move without harm and gradually widens the range you are comfortable using.
How Hypomobility Is Checked
Clinicians measure joint angles and feel how the joint moves and where it stops. Hands-on judgments have limits, though: checks of neck joint stiffness agree between examiners only about two-thirds to four-fifths of the time.23PubMed Central. Reliability of a seated three-dimensional passive intervertebral motion test for mobility, end-feel, and pain provocation in patients with cervicalgia For ankylosing spondylitis, standard spine-bending measurements are used to track change over time.24PubMed. Spinal mobility in ankylosing spondylitis: reliability, validity and responsiveness X-rays or scans show bony causes like spurs or fusion.
The visit usually starts with questions about when the stiffness began, what made it start, and what makes it better or worse. The examiner compares active movement, where you move the joint yourself, with passive movement, where they move it for you. The difference helps show whether the limit is in the joint or in muscle control and pain. Measurements are repeated at later visits to show whether treatment is working. Many people with stiffness do not need a scan.
Treatment Options That Work
Joint mobilization is when a therapist moves the joint gently and repeatedly, often at the end of its range. In frozen shoulder, end-range mobilization reduced stiffness and increased movement right after a session.25PubMed. Reliability of stiffness measured in glenohumeral joint and its application to assess the effect of end-range mobilization in subjects with adhesive capsulitis Mobilization plus exercise improved stiff shoulders, with greater gains in lifting the arm sideways than exercise alone.26PubMed. The effects of passive joint mobilization on pain and hypomobility associated with adhesive capsulitis of the shoulder Spinal manipulation improved stiff pelvic joints in people with disc herniation, with improvements still present a month later.27PubMed Central. Spinal manipulation in the treatment of patients with MRI-confirmed lumbar disc herniation and sacroiliac joint hypomobility: a quasi-experimental study
For stretching, long and gentle beats short and hard. In stiffened joints, low-force stretching held for long periods restored more movement than strong short stretches, and it also restored more normal tissue strength.28Clinical Orthopaedics and Related Research. Experimental Joint Contracture Correction with Low Torque-Long Duration Repeated Stretching
Between visits, short sessions several times a day usually work better than one long session, because tissue responds to frequent, repeated movement. Mild discomfort during a stretch is acceptable, but sharp pain is a signal to ease off, since forcing the joint can set you back. If an exercise is consistently painful, tell your therapist, who can change the position or the effort.
Manipulation under anesthesia means a surgeon moves the joint while you are asleep to break up tight tissue. For frozen shoulder that won’t improve, adding a steroid injection gave faster pain relief and movement at 2 weeks.29PubMed Central. Outcome of manipulation under anesthesia with or without intra-articular steroid injection for treating frozen shoulder Another study found manipulation alone sufficient.30PubMed. Manipulation under anesthesia for frozen shoulder with and without steroid injection For stiff knees after replacement, those without a steroid injection gained an average of 28 degrees but later lost about 12 of them, while the injected group lost none.31PubMed Central. The results of knee manipulation for stiffness after total knee arthroplasty with or without an intra-articular steroid injection
It is reasonable to raise the question of procedures when stiffness has not improved after months of consistent therapy. Stiffness after a joint replacement that blocks daily tasks, such as climbing stairs or getting out of a chair, is another reason to ask early rather than wait. Ask whether a steroid injection is planned alongside the procedure and why, since it may help keep the gains from being lost.
Preventing Stiffness After Injury or Surgery
Delaying movement after surgery leads to muscle and joint stiffness and pain.32PubMed Central. Importance of early postoperative mobilization: comprehensive review Early movement after hip and leg surgery, by contrast, is linked to less pain.33PubMed Central. Importance of early postoperative mobilization: comprehensive review After elbow injuries, early active movement reduces swelling and helps prevent stiffness.34PubMed Central. The post-traumatic stiff elbow: A review Splints and machines that move the joint for you are other options.35PubMed Central. The post-traumatic stiff elbow: A review Ask what movement is safe and follow your rehab plan from day one.
With a cast or sling, move the free joints nearby, such as the fingers, wrist, or elbow, since these can stiffen even though they were never injured. Ask your care team when gentle movement of the injured joint itself can start, because safe timing depends on the injury and the repair. Report stiffness that gets worse after the cast or sling comes off, so it can be treated before it settles in.
In daily life, regular activity keeps joints moving, and a healthy weight eases the load on arthritic joints. People with diabetes can watch their hands for loss of flexibility.
Hypomobility Versus Hypermobility
Joint hypermobility, often called being double-jointed, means a joint moves more than usual.36Dr Alison Grimaldi. Identifying joint hypermobility syndromes and measuring the impact A person can also have both, with one joint stiff and its neighbor overworking.37WikiMSK. Hypomobility and Stiffness
Treatment differs accordingly. Stiff joints need stretching and mobilization to restore lost movement. Overly loose joints need strengthening for stability, since the muscles must do the job the ligaments are not doing. Mixing the approaches up can make things worse, such as stretching a joint that is already too loose.