A brief moment of inattention, a stumble on the sidewalk, or a fall while playing sports—and just like that, it happens. Instinctively, we try to break our fall with our hand. However, the force of the impact can be too much for our bones to handle, resulting in a painful wrist fracture. This injury is one of the most common fractures of all and affects people of all ages, from active children to seniors. But what exactly happens in the wrist when it breaks? Is surgery always necessary, or is a cast enough? In this article, you’ll learn everything you need to know about diagnosis, modern treatment methods such as plate osteosynthesis, and how to regain mobility in your hand as quickly as possible.
Anatomy and Causes: When the Radius Breaks
The wrist is a complex joint consisting of the two forearm bones—the radius and the ulna—as well as the eight carpal bones. In a wrist fracture, the distal end—that is, the end farthest from the body—of the radius is most commonly broken. For this reason, medical professionals usually refer to it as a distal radius fracture. This fracture accounts for about 25 percent of all fractures in adults, making it the most common bone fracture in humans.
The classic cause is a fall that the person tries to break with their hand. In younger people, sports injuries or falls from a significant height (high-velocity trauma) are often to blame. In these cases, enormous forces act on the bone, which often leads to complex, open fractures or accompanying injuries to ligaments and soft tissues.
In older adults, however, even a minor trauma—such as tripping at home—is often enough to cause a fracture. This is frequently due to changes in bone structure. Older people, especially postmenopausal women, frequently suffer from bone loss. In people with osteoporosis, bone density is reduced, so that the bone can fracture even under minimal stress. You can find more information on the causes and treatment of this underlying condition in our article on osteoporosis.
Symptoms: Swelling and Misalignment
A wrist fracture is usually immediately noticeable. The affected hand is very painful, especially when moved. Significant swelling develops within a short time, often accompanied by a bruise. A sure sign of a displaced fracture is a visible misalignment of the wrist, often described as a “bayonet position.”
In addition, sensory disturbances such as tingling or numbness in the fingers may occur if nerves are compressed by the swelling or displaced bone fragments. This is a warning sign and should be evaluated by a doctor immediately. Limited range of motion is also typical; gripping or rotating the forearm is barely possible.
Diagnosis in Orthopedics and Trauma Surgery
The path to diagnosis begins with a clinical interview and an examination of hand function, blood flow, and sensation. To confirm the suspicion and precisely determine the type of fracture, an X-ray examination in two planes is essential. The X-ray shows whether the fracture is simple, comminuted, or involves a joint.
In cases of complex fractures, particularly when the articular surface is involved, a computed tomography (CT) scan is also performed. This cross-sectional imaging allows for precise planning of the fracture treatment, as it provides a three-dimensional representation of the position of the individual bone fragments. In rare cases, such as to rule out ligament injuries, arthroscopy (joint endoscopy) may also be appropriate.
Conservative Treatment: Cast and Immobilization
Not every wrist fracture requires surgery. If the fracture is stable and the bone fragments have not shifted, or have shifted only minimally, conservative treatment is the treatment of choice. Conservative treatment is also used for patients whose general health does not permit surgery.
In this process, the fracture is first brought into the correct position (repositioning) using traction and pressure, if necessary. The wrist is then immobilized in a cast or a rigid splint. Immobilization typically lasts 4 to 6 weeks. Regular X-ray follow-ups are important to detect any recurrence of displacement within the cast in a timely manner.
Anatomy of the Human Hand @ Alila Medical Media / AdobeStock
Surgical Treatment: When Is Surgery Necessary?
If the fracture is unstable, the bone fragments are significantly displaced, or the fracture extends into the articular surface, a wrist fracture is usually treated surgically. The goal of the surgery is to precisely restore the anatomy in order to prevent later osteoarthritis (joint wear) and deformities.
Plate Osteosynthesis The gold standard in hand surgery today is treatment with angle-stable plate osteosynthesis. In this procedure, a titanium plate is screwed onto the radius through a skin incision to stabilize the fracture. The advantage: The wrist is often immediately stable enough for movement and does not need to be immobilized for a long time.
Kirschner Wires and External Fixators For certain types of fractures—often in children or cases involving very soft bone—wires (Kirschner wires) may also be inserted for stabilization. In cases of open fractures or severe soft tissue damage, an external fixator is often used. This is a metal frame that is attached to the bone from the outside and keeps the fracture stable without requiring surgery directly in the injured area.
You can learn more about the options for surgical treatment of the hand in our Hand Surgery department.
Follow-up Care and Rehabilitation
Whether surgical or conservative: follow-up care is crucial to success. If the wrist is immobilized for an extended period, it tends to stiffen. Therefore, range-of-motion exercises should be started early on. Physical therapy and specialized hand therapy support this process.
Initially, the focus is on reducing swelling and maintaining finger mobility. Later, exercises are introduced to strengthen the muscles and restore full wrist and hand function. Depending on the severity of the fracture, it may take 3 to 6 months before the wrist can bear full weight again.
Treatment of a radius fracture with a titanium plate @ Henrie /AdobeStock
FAQ: The 8 Most Important Questions About Wrist Fractures
How long does it take to heal from a wrist fracture?
Bone healing usually takes about 6 weeks. However, it often takes 3 to 6 months for full weight-bearing capacity and range of motion to be restored. After surgery with plate osteosynthesis, mobility exercises can usually be started earlier than with conservative cast treatment.
When is surgery necessary?
Surgery is performed for fractures that are unstable, where the bone fragments are displaced (dislocation), or where the joint surface is affected. Surgery is also unavoidable if nerves or blood vessels are injured or if the fracture is open, in order to prevent malalignment and loss of function.
Can I drive with a cast?
No, you are not safe on the road with a cast or splint on your wrist. In the event of an accident, your insurance company may deny liability. You should not drive again until your hand is fully functional and can bear weight.
What is a distal radius fracture?
A distal radius fracture is the medical term for a classic wrist fracture. “Distal” means far from the body, and “radius” is the radius bone. This means that the end of the radius bone—which directly forms the wrist—is fractured. It is the most common type of radius fracture.
What complications can occur?
Possible complications include limited range of motion, chronic pain, or malalignment if the bone does not heal properly. Nerve injuries (e.g., carpal tunnel syndrome) or a torn tendon are also possible. A rare but serious complication is Sudeck’s disease (CRPS), a painful circulatory and metabolic disorder.
Does the metal need to be removed?
Titanium plates and screws can often remain in the body if they do not cause any problems. However, if they irritate tendons or press against the skin in very thin patients, they can be removed in a minor procedure once the bone has fully healed (usually after 6 to 12 months).
What are associated injuries?
Often, it is not just the radius that fractures. The styloid process of the ulna frequently breaks off as well. Ligaments in the wrist, such as the scapholunate ligament, or the triangular disc (a type of meniscus in the wrist) may also be injured. Such associated soft-tissue injuries must be identified and treated as well to prevent instability. You can read more about this in the article on TFCC lesions.
Does diet help with healing?
Yes, a balanced diet with sufficient calcium and vitamin D supports bone healing. This is particularly important for patients with osteoporosis to improve bone quality and prevent further fractures. Smoking, on the other hand, can delay bone healing and should be avoided.
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Sabine Schneider
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Sabine Schneider – medical author: Explore expert articles and medical expertise in the Leading Medicine Guide.
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