Hand & Wrist

Wrist Hypermobility and Midcarpal Instability

Midcarpal instability is often manageable without surgery, and many patients improve over time as we build wrist stability through targeted rehabilitation. Dr. Peter FitzGibbons evaluates hypermobility-related wrist instability for patients throughout Montgomery County at our Bethesda and Germantown offices.

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What is wrist hypermobility and midcarpal instability?

Wrist hypermobility, also called midcarpal instability, is excessive and often painful motion between the wrist's carpal bones, frequently linked to generalized joint laxity or Ehlers-Danlos syndrome. It causes clunking, a sense of looseness, and recurrent sprains from minor movements. Treatment starts with bracing and stabilization exercises, with surgery reserved for persistent, disabling instability.

Generalized joint hypermobility refers to excessive laxity across multiple joints in the body. In the wrist, this commonly shows up as midcarpal instability, a pattern of abnormal, often painful, sliding motion at the midcarpal joint, the joint between the two rows of small carpal bones that make up the wrist. This instability is classically explained using "ring theory," which describes the carpal bones as functioning like a mechanical ring of interconnected links; when the ligaments supporting that ring become too lax, particularly at the scaphotrapeziotrapezoid and triquetrohamate joints, the ring can shift or slip abnormally during normal wrist motion (Demystifying Palmar Midcarpal Instability, PMC).

In some patients, this instability is an isolated ligament problem. In others, it reflects an underlying connective tissue disorder, most notably Ehlers-Danlos syndrome (EDS) or hypermobility spectrum disorder, in which the collagen that gives ligaments their strength is structurally different, producing generalized laxity rather than a single injured ligament (PMC). This page focuses on the wrist instability itself; patients with a broader connective tissue disorder often benefit from coordinated care that addresses joint laxity throughout the body, not just the wrist.

Midcarpal instability related to generalized ligamentous laxity is strongly linked to EDS: up to 70 percent of patients with EDS-related hypermobility have painful midcarpal laxity. Importantly, this form of instability often behaves differently than instability caused by a discrete injury, frequently improving or self-limiting over time rather than progressing (PMC). Generalized joint hypermobility is more common in younger people and in women, and its assessment plays a central role in the 2017 international diagnostic criteria for hypermobile EDS (The Beighton Score as a measure of generalized joint hypermobility, PMC).

Symptoms — do you recognize these?

Because the underlying issue is ligament laxity rather than a single injury, symptoms tend to recur with relatively minor provocation.

Recurrent wrist pain
A clicking or "clunking" sensation with certain wrist movements
A feeling that the wrist is loose, unstable, or about to give way
Recurrent wrist sprains from minor movements or minimal force
Symptoms that fluctuate rather than following one clear injury

If your wrist repeatedly clunks, feels like it is giving way, or you have a known connective tissue disorder and new wrist pain, call our office for an evaluation so we can determine the pattern and severity of the instability.

How we diagnose it

The key clinical test is the midcarpal shift test, in which the examiner applies gentle downward pressure on the wrist while moving it from a radially deviated position into ulnar deviation; a positive test reproduces the palpable or audible clunk characteristic of midcarpal instability (PMC).

The severity of the instability itself is described using two complementary systems: the Lichtman grading system, which runs from grade I to V and describes worsening translation and clunk severity, and the Hargreaves grading system, which runs from 0 to 4, ranging from mild presymptomatic hypermobility to static, irreducible instability (PMC). Separately, the Lichtman classification also divides midcarpal instability by mechanism into extrinsic and intrinsic types, with intrinsic instability further split into palmar, dorsal, and combined patterns; a complementary four-type classification has also been proposed by Caputo (PMC).

To assess whether the wrist instability reflects a broader pattern of generalized joint hypermobility, we use the Beighton score, a nine-point examination that checks passive bending of the little fingers and thumbs, hyperextension of the elbows and knees, and the ability to place both palms flat on the floor with the knees straight. A score of 4 or more out of 9 is the conventional cutoff for generalized joint hypermobility in adults. It is worth being candid, however, that a recent critical review found this cutoff lacks a strong evidence base and that the score can miss instability in joints it does not directly test, including the wrist itself (The Beighton Score as a measure of generalized joint hypermobility, PMC).

Treatment options

Most patients, particularly those with EDS-related laxity, are managed successfully without surgery. We reserve surgical stabilization for persistent, functionally limiting instability that does not respond to a genuine course of rehabilitation.

Splinting and bracing

A wrist brace or orthosis worn to limit the provocative motions that produce clunking and pain while the surrounding musculature is trained to compensate.

When used: Initial management for most patients. Reported outcomes across several small case series are mixed, with roughly 60 to 85 percent of patients improving initially in different cohorts, though some relapse over longer follow-up (PMC).

Proprioceptive and neuromuscular stabilization exercise

A structured rehabilitation program aimed at improving the wrist's dynamic, muscle-driven stability rather than correcting the underlying ligament laxity itself. A recent randomized controlled trial of 169 participants comparing this type of exercise program directly against a hand orthosis found no statistically significant difference between the two approaches at 12 weeks for pain, function, grip strength, or quality of life, suggesting both are reasonable first-line strategies (Wrist Stabilising Exercise vs Hand Orthotic for Hypermobility, PubMed).

When used: First-line treatment, often combined with or compared against bracing.

Recovery & rehabilitation

For many patients, particularly those with EDS-related midcarpal laxity, the condition is genuinely self-limiting, meaning symptoms improve over time with rehabilitation even without surgery. This is a meaningfully different prognosis than instability caused by a single traumatic ligament tear, and it is one of the more reassuring aspects of counseling patients with this diagnosis (PMC).

When surgery is required, soft-tissue stabilization procedures such as dorsal capsulodesis, three-ligament tenodesis, and triquetrohamate reconstruction generally preserve more wrist motion than fusion-based options, which trade some motion for a more predictable outcome (PMC; PubMed). Recovery after soft-tissue reconstruction typically involves a period of splinting followed by progressive motion and strengthening, with dorsal capsulodesis generally allowing a faster return to activity than tenodesis reconstruction based on long-term comparative data (PubMed). Patients with a diagnosed connective tissue disorder should expect that rehabilitation focuses on building dynamic muscular stability around an inherently lax joint rather than eliminating the underlying laxity itself, since collagen-based ligament laxity is not something surgery or therapy can fully reverse.

Frequently Asked Questions

Is wrist hypermobility the same thing as being double-jointed?

They are related but not identical. Being "double-jointed," or generally hypermobile, describes excess flexibility across multiple joints in the body, which is measured with the Beighton score. Midcarpal instability is a specific pattern of excessive, often painful sliding motion within the wrist itself, which can occur in people with generalized hypermobility but is a distinct clinical diagnosis with its own grading systems. Not everyone with a flexible body has painful wrist instability, and the Beighton score can actually miss wrist-specific laxity since it does not directly test the wrist.

Do I need surgery for a hypermobile, clunking wrist?

Most patients do not. Bracing combined with a structured stabilization exercise program is effective for many people, and a recent randomized trial found no meaningful difference between exercise-based treatment and a hand orthosis at 12 weeks. Surgery is reserved for patients with persistent, functionally limiting instability that does not improve after a genuine trial of these non-surgical measures, particularly when the instability significantly interferes with daily activities or work.

Will my wrist instability get worse over time if I have Ehlers-Danlos syndrome?

Not necessarily, and this is one of the more reassuring features of this specific diagnosis. Midcarpal instability related to EDS or generalized hypermobility is often described as self-limiting, meaning many patients see genuine improvement over time with rehabilitation rather than progressive worsening. This differs from instability caused by a single traumatic ligament tear, which is less likely to improve without intervention.

What is the difference between dorsal capsulodesis and ligament reconstruction?

Dorsal capsulodesis tightens and reinforces the existing wrist capsule to limit excessive motion, while ligament reconstruction, such as three-ligament tenodesis or triquetrohamate reconstruction, uses a tendon graft to recreate a stabilizing structure that is deficient or absent. A long-term study following patients for eight years found both approaches produced durable results, but capsulodesis generally allowed a faster recovery, which is why it is often preferred when either approach is a reasonable option.

Can four-corner fusion fix my wrist instability if other surgeries fail?

It can, and it is generally considered the most reliable option for refractory instability that has not responded to soft-tissue procedures. The tradeoff is that fusing four of the carpal bones together eliminates motion at the midcarpal joint permanently in exchange for dependable stability and pain relief. This procedure is reserved for cases where soft-tissue reconstruction has already been tried or is unlikely to succeed, since it removes wrist motion that cannot be restored afterward.

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Peter G. Fitzgibbons, MD

Hand Surgery · Orthopedic Surgery

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Medically reviewed by Peter G. Fitzgibbons, MD, MD

Last reviewed August 5, 2026