Madelung’s deformity is a rare wrist condition in which part of the growth plate at the lower end of the radius (the larger forearm bone on the thumb side) closes too early, causing the bone to grow unevenly and the wrist to gradually shift out of alignment. The result is a visibly altered wrist shape, often with the end of the ulna (the smaller forearm bone) sticking out prominently on the back of the wrist. It is most commonly noticed in adolescent girls and tends to affect both wrists, though the severity can differ from one side to the other.
How the Deformity Develops
In a normally growing wrist, the growth plate at the lower end of the radius adds bone evenly in all directions, allowing the forearm to lengthen symmetrically. In Madelung’s deformity, the inner and palm-side portion of that growth plate stops working prematurely while the rest continues to grow. Because one section of the plate shuts down while the others keep going, the radius curves and tilts in a lopsided way.1PubMed. Madelung deformity and Madelung-type deformities: a review of the clinical and radiological characteristics The bone ends up shorter than it should be, angled more steeply toward the palm, and tilted further toward the pinky side than normal.
A structure called the Vickers ligament plays a central role in this process. In people without the deformity, this ligament either does not exist or is too small to matter. In Madelung’s deformity, an abnormally thick band of tissue tethers one of the small wrist bones (the lunate) to the palm side of the radius, acting like a leash that pulls the wrist bones into an abnormal position and further restricts the growth plate.2Journal of Pediatric Orthopaedics. Long-term Outcomes Following Vickers Ligament Release and Growth Modulation for the Treatment of Madelung Deformity The presence of this abnormal ligament is actually one of the key features that distinguishes true Madelung’s deformity from similar-looking wrist problems caused by other conditions.
What It Looks Like and Feels Like
The deformity usually becomes noticeable between the ages of about 6 and 13, as the child enters a growth spurt.3PubMed Central. Madelung Deformity in a Collegiate Gymnast: A Case Report In its early stages, a parent or the child might notice that the wrist looks slightly different compared to friends’ wrists, or that the bony bump on the back of the wrist near the pinky side seems more prominent than usual. As the condition progresses, the visible changes become more obvious:
- Dorsal prominence: The end of the ulna juts out on the back of the wrist because the radius, having grown unevenly, no longer lines up properly with it.
- Bayonet shape: The hand and wrist appear shifted toward the palm and the thumb side, giving the forearm a subtle zigzag profile when viewed from the side.
- Shortened forearm: The affected arm may be noticeably shorter than expected, since the radius has not reached its full length.
Functionally, people with Madelung’s deformity often experience reduced wrist range of motion, decreased grip strength, and pain that worsens with activity.4PubMed. Madelung Deformity: A Current Concepts Review The degree of pain and limitation varies enormously. Some people have a wrist that looks clearly unusual but causes them very little trouble day to day, while others find that sports, carrying bags, or even turning a doorknob becomes uncomfortable. Aesthetic concerns also matter to many patients, particularly teenagers who may feel self-conscious about the visible deformity.
Who Gets It
Madelung’s deformity is considerably more common in girls and women than in boys and men, and most people who have it are affected in both wrists.5PubMed Central. Advances in diagnosis and treatment of Madelung’s deformity The condition follows an autosomal dominant inheritance pattern, meaning a child only needs to inherit one copy of the relevant genetic change from one parent to develop it. That said, the severity varies widely even within the same family. One sibling might have a barely noticeable wrist curvature, while another has a pronounced deformity requiring treatment.
The condition was first described in the 1800s and carries the name of the German surgeon Otto Madelung, who documented its features in detail.6PubMed. Otto W. Madelung and the recognition of Madelung’s deformity Despite being recognized for well over a century, it remains relatively rare, so many general practitioners may not have seen a case before. This can mean delays in diagnosis, especially if the early, subtle stages are mistaken for a sprain or growing pains.
The Genetic Link to SHOX
The most well-understood genetic cause of Madelung’s deformity involves the SHOX gene, which sits on the sex chromosomes and plays a major role in skeletal growth, particularly in the limbs. When one copy of this gene is missing or defective, the growth plates in certain bones do not function normally. Mutations or deletions affecting SHOX account for roughly 80% of genetic cases of a condition called Léri-Weill dyschondrosteosis, a syndrome in which Madelung’s wrist deformity is the hallmark feature alongside shorter-than-average stature, especially in the middle segments of the limbs.7PubMed Central. Skeletal Deformity Associated with SHOX Deficiency
Not everyone with Madelung’s deformity has a SHOX mutation, however. The deformity can also arise from trauma to the growth plate, infections, or other bone growth disorders. This is one of the reasons doctors sometimes talk about “true” Madelung’s deformity versus “Madelung-type” deformities. The true form involves the Vickers ligament and is typically genetic; the Madelung-type deformities look similar on an X-ray but arise from other causes like a childhood fracture that damaged the growth plate or conditions such as multiple hereditary exostoses (bony growths near joints).1PubMed. Madelung deformity and Madelung-type deformities: a review of the clinical and radiological characteristics The distinction matters because it affects treatment decisions and whether other family members might be at risk.
Because SHOX-related Madelung’s deformity runs in families with autosomal dominant inheritance, a parent who carries the mutation has a 50% chance of passing it on with each pregnancy. Genetic testing can confirm a SHOX deletion or mutation, and prenatal diagnosis and genetic counseling are available for families who know they carry the gene change.8Archives of Disease in Childhood. 726 Leri-Weill Dyschondrosteosis – A Case of Complete Deletion of One of the Copies of Shox Gene For families with a known SHOX mutation, early monitoring of children’s wrists and overall growth allows doctors to intervene before the deformity becomes severe.
How Doctors Diagnose It
A standard wrist X-ray is usually enough to spot the characteristic pattern. On the front-to-back view, the lower end of the radius shows increased tilt toward the pinky side, and the small wrist bones are squeezed into a triangular or pyramid-like arrangement rather than their normal arched shape. The lunate bone gets pushed deeper into the gap between the radius and ulna, a finding radiologists call lunate subsidence.9PubMed. Madelung Deformity On the side view, the radius tips excessively toward the palm.
In mild or early cases, the X-ray changes can be subtle, and an MRI may be ordered to look for the Vickers ligament directly. Because this abnormal ligament is the defining feature of true Madelung’s deformity, seeing it on an MRI helps confirm the diagnosis and distinguish it from look-alike conditions caused by injury or other bone disorders. Doctors also look at the growth plates to gauge how much growth remains, since that information guides treatment timing.
Treatment When Symptoms Are Mild
Not everyone with Madelung’s deformity needs surgery. When the wrist causes only mild pain and there is no major loss of function, conservative management works well. This typically involves pain relief with over-the-counter medications, wearing a wrist splint during aggravating activities, and modifying activities that put heavy stress on the wrist. In one reported case, a woman who was already skeletally mature (meaning her bones had stopped growing) was managed conservatively with oral pain medication, activity restriction, and a palm-side splint. At six months, her pain had decreased and she had no new complaints.10PubMed Central. Madelung Deformity of the Wrist Managed Conservatively
Conservative treatment tends to be favored for adults whose bones are done growing and whose symptoms are manageable, or for children with very mild deformity who can be watched over time to see how the condition progresses. The deformity itself does not reverse without surgery, but symptoms can wax and wane. Some people find that strengthening the muscles around the wrist and forearm improves their grip and reduces discomfort, even though the underlying bone shape has not changed.
Surgical Options
Surgery becomes a more serious consideration when the deformity is progressing in a growing child, when pain significantly limits daily activities, or when the cosmetic appearance is causing distress. The surgical approach depends on whether the patient is still growing.
In children and adolescents who still have open growth plates, the most common early intervention is releasing the Vickers ligament. By cutting this abnormal tether, the surgeon removes the structure that is pulling the wrist bones out of place and compressing the growth plate. This release is often combined with a technique called growth modulation, in which a small plate or staple is placed on the faster-growing side of the radius to slow it down and allow the stunted side to catch up. The goal is to redirect the remaining growth toward a more normal alignment, which can only work while the growth plates are still active.
Long-term follow-up of patients who had Vickers ligament release combined with growth modulation has shown mixed results. While the procedure can slow worsening of some aspects of the deformity, one study found that lunate subsidence (the lunate bone sinking deeper between the forearm bones) continued to progress over time even after surgery, though other measurements like the sideways tilt of the radius changed very little.11PubMed. Long-term Outcomes Following Vickers Ligament Release and Growth Modulation for the Treatment of Madelung Deformity This highlights a frustrating reality of the condition: even with well-timed surgery, the deformity may not be fully corrected, and some patients need additional procedures later.
For patients whose growth is finished, corrective bone-cutting surgery (osteotomy) is the main option. The surgeon cuts the radius, repositions it at a better angle, and fixes it with a plate and screws. Sometimes the ulna needs to be shortened as well, since the dislocated ulnar head is often the most prominent and bothersome part of the deformity. These procedures can improve alignment, reduce the dorsal bump, and relieve pain, though the wrist may never look or move exactly like an unaffected one.
Complications If Left Untreated
Most people with Madelung’s deformity live comfortably with their condition, especially if it is mild. But when the deformity is severe and goes unaddressed for many years, the displaced ulnar head can cause problems beyond the wrist itself. The bony prominence rubs against the tendons that run across the back of the wrist and control finger extension. Over time, this friction can wear through the tendons, a process called attrition rupture. In one documented case, a patient with a previously undiagnosed Madelung’s deformity developed ruptures of multiple finger-straightening tendons because the tendons had been grinding against the dislocated ulna for years.12PubMed. Madelung Deformity and Extensor Tendon Rupture This kind of complication is rare but serves as a reason to monitor the condition even when it is not causing immediate pain.
Chronic misalignment of the wrist joint can also contribute to earlier-onset arthritis in the wrist. When the joint surfaces do not line up properly, the cartilage wears unevenly, leading to stiffness and aching that worsens over the decades. Whether surgery prevents or delays arthritis in these patients is still debated, since the wrist never fully normalizes even after correction.
Living with Madelung’s Deformity
For many people, the biggest day-to-day challenge is navigating activities that load the wrist. Push-ups, yoga poses that put weight through the hands, and racquet sports can all be uncomfortable. Gymnasts face a particular challenge, since the repetitive weight-bearing on the wrists that the sport demands can aggravate symptoms or, in some cases, may have contributed to revealing the underlying deformity in the first place.3PubMed Central. Madelung Deformity in a Collegiate Gymnast: A Case Report Working with a physical or occupational therapist to learn wrist-friendly modifications for exercise and daily tasks can make a real difference.
The cosmetic aspect is worth acknowledging plainly. A prominent bump on the back of the wrist, a visibly shortened forearm, or a wrist that bends at an unusual angle can attract unwanted attention, and teenagers diagnosed during a growth spurt often find this harder to cope with than the physical symptoms. Some patients pursue surgery primarily for appearance rather than pain, and surgeons generally consider that a reasonable motivation when the deformity is significant.
Madelung-Type Deformities and What Sets Them Apart
Doctors sometimes use the term “Madelung-type deformity” to describe a wrist that looks like Madelung’s on an X-ray but has a different cause. The most common culprits are childhood fractures that damaged the growth plate, bone infections near the growth plate, or conditions that produce bony growths near joints. The visual result can be strikingly similar: the radius is curved, the ulna sticks out, and the wrist bones are wedged into an abnormal shape.
The critical difference is the Vickers ligament. In true Madelung’s deformity, this abnormal ligament is present and actively tethering the wrist bones; in Madelung-type deformities from trauma or other acquired causes, it is absent.1PubMed. Madelung deformity and Madelung-type deformities: a review of the clinical and radiological characteristics This matters for treatment because releasing a ligament that is not there would obviously not help, and because a genetic cause implies that family screening and genetic counseling might be warranted, while a post-traumatic cause does not.
Cases caused by trauma to the growth plate can sometimes occur from repetitive loading rather than a single injury. A child who does intensive gymnastics or other weight-bearing activities on the hands during their growth years may develop a Madelung-type picture because the growth plate was stressed rather than genetically defective. These acquired cases tend to be one-sided, affecting only the wrist that bore the brunt of the stress, unlike the bilateral pattern more typical of the genetic form.
Why Early Recognition Matters in Children
Timing is everything when it comes to the surgical options that work through the growth plates. Growth modulation and Vickers ligament release are only useful while there is still meaningful growth remaining. By the time a teenager’s growth plates close, the window for these less-invasive procedures has passed, and the only corrective option left is osteotomy, which is a bigger operation with a longer recovery. Because the deformity first shows up during childhood growth spurts, pediatricians and family doctors are in the best position to catch it early.
If a child is short for their age and has wrist changes consistent with Madelung’s deformity, testing for SHOX deficiency is particularly worthwhile. In cases where a SHOX mutation is confirmed, growth hormone therapy may be considered to help with overall height, and the wrist can be monitored closely so that surgical intervention, if needed, happens at the right time. Families with a known SHOX mutation benefit from having siblings and other relatives screened, since the condition can be mild enough to go unnoticed until growth is nearly complete and the best treatment window has closed.
The Role of Physical Activity
A common worry for parents of children diagnosed with Madelung’s deformity is whether their child should stop playing sports. There is no blanket answer. Low-impact activities that do not load the wrist heavily are generally well tolerated. For sports that put significant stress on the wrists, the decision should be individualized. A child with mild deformity and no pain may continue with appropriate wrist support and regular monitoring, while one with progressive changes and increasing discomfort may need to shift to less wrist-intensive activities.
Adults with the condition face similar trade-offs. Strengthening the forearm muscles, using ergonomic tools at work, and wearing a supportive brace during flare-ups are practical strategies that most people find helpful. The condition itself does not worsen once the bones stop growing (since the growth plate is no longer active), but the secondary effects on joint wear and tendon health can evolve slowly over years, making periodic check-ins with a hand or wrist specialist reasonable even when symptoms are stable.