Distal Radius Fracture: Nonsurgical vs Surgical Treatment

A distal radius fracture is a break at the end of the forearm bone nearest the wrist, and it is one of the most common fractures in orthopedic medicine. The typical cause is a fall onto an outstretched hand, and the injury spans all age groups, from children falling off playground equipment to older adults tripping on a sidewalk. Treatment can range from a simple cast to surgical fixation with plates and screws, depending on how badly the bone fragments are displaced and whether the joint surface is involved. What makes this fracture especially worth understanding is how different the injury, the treatment, and the recovery look depending on who you are and how it happened.

How the Bone Breaks

Almost every distal radius fracture starts the same way: you fall, your hand goes out to catch you, and the force of impact travels straight up into the wrist. Biomechanical research has measured exactly how much force it takes. A study modeling forward falls found that dropping from heights above about 0.6 meters generates peak forces that exceed the average fracture strength of the distal radius.¹ Separate cadaveric testing pinpointed the 50-percent fracture risk at an elbow reaction force of roughly 4.3 kN, which is about the force of a moderate stumble for a typical adult.² The shoulder absorbs most of the energy during a fall, but the wrist takes the sharp initial spike, which is why this bone breaks before anything else does.

Who breaks it and how differs by age and sex. In younger men, distal radius fractures tend to come from high-energy events like sports collisions, cycling crashes, or falls from height. After middle age, the pattern flips: low-energy falls, like stumbling while walking, become the dominant cause. A large suburban survey found that about one in five men under 45 broke their wrist in a high-energy mechanism, while roughly 40 percent of men over 45 broke theirs in a simple low-energy fall.³ In women, low-energy fractures dominate across virtually every age group past menopause, driven by the loss of bone density that accelerates after estrogen levels drop.

Diagnosis and Why Standard X-Rays Can Mislead

The initial workup is a plain X-ray, taken from the front and side. Doctors measure a handful of parameters on these images: how much the joint surface tilts forward (volar tilt, normally around 11 to 15 degrees), how steeply the bone angles toward the thumb side (radial inclination, normally around 22 to 27 degrees), and how tall the radius is relative to the neighboring ulna bone (radial height, normally around 11 to 13 mm).⁴ These numbers matter because they guide whether a fracture can be treated in a cast or needs surgery, and they serve as a benchmark for checking whether the bone stays aligned during healing.

The trouble is that standard X-rays consistently underestimate how damaged the joint surface actually is. A study comparing post-reduction X-rays with CT scans found that X-rays measured the average articular step-off at 0.4 mm and the average gap at 0.9 mm, while CT scans of the same wrists showed those numbers were actually 1.3 mm and 2.4 mm, respectively. Even more striking, central depression of the joint surface showed up on X-rays in only 18 percent of wrists, but CT revealed it in 62 percent.⁵ A separate study confirmed that CT improved the detection of comminution and involvement of the joint between the radius and ulna, and changed the proposed treatment plan in a meaningful fraction of cases.⁶

This does not mean every wrist fracture needs a CT scan. For a clean, stable break that lines up well on X-ray, additional imaging adds cost without changing anything. But for fractures that extend into the joint surface or show significant crushing of the bone, a CT scan can reveal hidden damage that would otherwise go unaddressed.

Treatment Without Surgery

Most distal radius fractures are treated nonoperatively, particularly those that are not displaced or only mildly out of alignment. The traditional approach has been three to six weeks of immobilization in a plaster cast or splint after any necessary reduction (manually re-aligning the bone fragments). Emerging evidence suggests that for fractures with minimal displacement, even one week of cast immobilization may be safe, and shorter periods of immobilization tend to produce better early function and a quicker return to daily activities.⁷

The main risk of cast treatment is that the fracture re-displaces inside the cast, a problem called loss of reduction. In adults, risk factors include older age, involvement of the joint between the radius and ulna, an accompanying fracture of the ulnar styloid (the small bump on the pinky side of the wrist), and a fracture that was significantly displaced to begin with.⁸ In children, any leftover translation after the reduction attempt and a poorly fitting cast are both strong predictors: fractures with residual translation in the sagittal plane were nearly five times more likely to slip.⁹ A large multicenter pediatric registry confirmed that certain fracture patterns and non-anatomic reductions independently raised the odds of re-displacement.¹⁰

When Surgery Is Needed

Surgery typically enters the picture when the fracture is unstable, severely displaced, or extends into the wrist joint in a way that threatens long-term function. The two most common approaches are volar locking plates (a metal plate screwed to the palm side of the bone) and percutaneous Kirschner wires (thin metal pins driven through the skin to hold fragments in place). Locking plates allow you to start moving your wrist sooner because the fixation is rigid enough to support early motion; wire fixation is simpler, cheaper, and faster to perform but requires longer immobilization.

Multiple meta-analyses have compared the two. Patients treated with locking plates consistently score better on functional questionnaires at every follow-up interval through a year, and one systematic review found that advantage persisted even beyond 12 months.¹¹ Early range-of-motion advantages are especially clear at six weeks, when plating patients have meaningfully better flexion, extension, and rotation.¹² However, by a year out the differences in motion and grip narrow to the point where patients themselves may not notice. Wire fixation carries about an 18 percent higher risk of minor complications, primarily superficial infections around the pin sites, but locking plates actually have a slightly higher reoperation rate, suggesting that while wires cause more nuisance problems, plates occasionally cause more serious ones.¹³

Complications Worth Knowing About

Several complications can accompany a distal radius fracture whether you have surgery or not, and some are frequently under-recognized.

Acute Carpal Tunnel Syndrome

The median nerve runs through the carpal tunnel right next to the fracture site, and swelling or bone displacement can compress it. In a cohort of nearly 1,200 patients with distal radius fractures, about 4.3 percent developed acute carpal tunnel syndrome, with symptoms typically appearing around one week after the injury. Women and patients in the 60-to-70 age bracket were most commonly affected.¹⁴ Numbness, tingling, or burning in the thumb, index, and middle fingers after a wrist fracture should prompt immediate attention; if caught early, reducing the fracture or loosening a tight cast often resolves it, but delayed cases can require surgical release.

Tendon Rupture

The extensor pollicis longus tendon, which straightens the tip of the thumb, passes through a groove right at the fracture site and is vulnerable to rupture. This can happen after surgical fixation if a screw tip protrudes into the tendon’s path, with one large series finding a rupture rate of 0.4 percent, occurring on average about three and a half months after plate surgery.¹⁵ But tendon rupture also occurs after nonoperatively treated fractures, possibly from a sharp bone edge wearing through the tendon over weeks or from disruption of the tendon’s blood supply during the fracture itself.¹⁶ If you suddenly lose the ability to lift the tip of your thumb weeks after a wrist fracture, that is the likely explanation, and it generally requires a tendon transfer to fix.

Soft-Tissue Injuries You Cannot See on X-Ray

The triangular fibrocartilage complex (TFCC) is a pad of cartilage and ligaments on the pinky side of the wrist that stabilizes the joint between the radius and ulna. An MRI study of patients with distal radius fractures found that every single patient in their cohort had a traumatic TFCC tear. Older patients and those with osteoporosis were significantly more likely to have a specific type of TFCC injury involving the distal attachment.¹⁷ Not all of these tears cause symptoms, but they can explain persistent pain or clicking on the ulnar side of the wrist after the fracture itself has healed.

Complex Regional Pain Syndrome

Perhaps the most feared complication is complex regional pain syndrome (CRPS), a condition where the nervous system essentially overreacts to injury, producing disproportionate pain, swelling, color changes, and stiffness that can persist long after the fracture heals. It is uncommon but not rare. A large insurance database study of nearly 60,000 patients found a CRPS diagnosis rate of about 0.2 percent, with women and patients who also had fibromyalgia at dramatically higher risk.¹⁸ However, smaller prospective studies tracking patients more closely have reported much higher incidence, and one study found CRPS in about 32 percent of patients followed after cast removal, suggesting that mild or transient cases are frequently missed in administrative data.¹⁹

One modifiable risk factor stands out: the length of immobilization. A recent case-control study found that keeping the cast on for more than five weeks increased the odds of developing CRPS by roughly 27 times compared to shorter immobilization periods.²⁰ That same study also identified ACE inhibitor use (a common blood pressure medication) as a strong independent risk factor. While those numbers come from a single study and should be interpreted cautiously, the message that prolonged immobilization is harmful is consistent across the literature and is one reason the trend toward shorter casting times is gaining traction.

Children Heal Differently

Distal radius fractures in children are common, and they heal with a biological advantage adults do not have: remodeling. The growth plate near the end of the radius can gradually straighten out a bone that healed in a crooked position. Classic research demonstrated that when a fracture leaves the growth plate tilted, the plate redistributes growth in a way that corrects the abnormal angle. The correction follows an exponential curve, and the child’s age at the time of fracture does not limit this capacity.²¹

A retrospective study of children treated with casting alone, even those with residual angulation averaging about 4 degrees, found that by the final follow-up, angulation had improved substantially. All patients regained full range of wrist motion, none had pain, and there were no cases of growth-plate damage, deformity, or failure to heal.²² This remarkable remodeling potential means that children tolerate imperfect alignment far better than adults, and many pediatric fractures that look concerning on X-ray end up healing perfectly without surgical intervention.

Does Perfect Alignment on X-Ray Actually Matter?

One of the more counterintuitive findings in the distal radius fracture literature, especially relevant for older patients, is that radiographic alignment does not correlate well with how the patient actually feels and functions. A study of older adults treated for wrist fractures found no association between any of the four standard radiographic parameters at six weeks and patient-reported function at one year.²³ A separate systematic review and meta-analysis across studies of adults with displaced fractures found that while acceptable radiographic reduction was associated with a statistically better outcome score, the actual difference (around 4 points on a 100-point scale) fell below the threshold that patients can perceive.²⁴ Research specifically in elderly patients echoed this: minor deformities after healing had no impact on patient-perceived outcomes.²⁵

This disconnect matters enormously for treatment decisions in older adults. If a 75-year-old has a displaced fracture that does not line up perfectly after a closed reduction, the question of whether to proceed to surgery becomes harder to justify on outcomes grounds alone. Cost-effectiveness analyses bear this out: surgical plating in patients 60 and older was not cost-effective compared with nonoperative treatment in multiple studies, with one analysis showing that at one year, cast treatment dominated plating (lower cost and better quality of life).²⁶ A separate economic evaluation in patients 65 and over reached the same conclusion: surgery was not cost-effective.²⁷ None of this means surgery is never appropriate in older adults, but it does mean that chasing a perfect-looking X-ray with an operation may not improve how the patient actually feels.

Rehabilitation After the Cast or Surgery

Once the bone is stable enough, the work of recovering motion, strength, and function begins. The question patients often ask is whether they need formal physical therapy or can manage on their own with home exercises. A systematic review with meta-analysis of randomized trials found that supervised physical therapy produced significant short-term benefits: roughly 12 points better on a function score, about 13 percent more grip strength relative to the uninjured side, and about 9 degrees more wrist extension at six weeks, compared to home exercise alone.²⁸

The benefit appears especially important for older patients. A randomized trial focusing on people over 60 with extra-articular fractures found that the supervised therapy group had clinically significant functional improvements over the home-exercise group not only at six weeks but persisting at six months.²⁹ For younger patients with simpler fractures, a well-structured home exercise program may be enough. But if you are older, have stiffness that is not improving, or had a more complex fracture or surgery, working with a hand therapist is likely to speed your recovery.

The Osteoporosis Warning Signal

For people over 50, especially women, a distal radius fracture is often the first fragility fracture they experience, and it can be a warning sign that bone density is low enough to put them at risk for more serious fractures later, like a hip or spine fracture. Researchers have called it a “sentinel fracture” for exactly this reason.³⁰ A study of elderly women found that even among those whose standard bone density scans at the hip and spine did not meet the threshold for osteoporosis, a significant proportion had osteoporotic bone density when the forearm itself was scanned.³¹

Despite this, follow-up bone density testing and treatment remain remarkably uncommon. A national study found that only about 7 percent of patients received anti-osteoporosis medication in the year following a distal radius fracture, and that rate actually declined from about 8 percent in 2008 to under 6 percent in 2015, even as screening rates rose.³² If you break your wrist from a simple fall after age 50, asking your doctor about a bone density test is one of the most important things you can do for your long-term skeletal health.

Correcting a Fracture That Healed Crooked

When a distal radius fracture heals in a malunited position and causes ongoing symptoms like pain, limited motion, or weakness, a corrective osteotomy (surgically re-breaking and realigning the bone) can help. Traditionally, planning these procedures relied on two-dimensional X-rays and educated guessing. More recently, three-dimensional virtual planning using CT data and 3D-printed models has changed the approach substantially. A systematic review of 3D-planned corrective osteotomies found that in 96 percent of cases, key alignment measurements were restored to within 5 degrees or 2 mm of normal values, with significant improvements in range of motion and grip strength.³³ Some centers take this further by printing a physical model of the patient’s wrist and practicing the osteotomy cuts on it before entering the operating room, making the surgery more predictable and precise.³⁴

Long-term, a malunited distal radius does carry a risk of post-traumatic arthritis. Research has shown a significant relationship between joint-space narrowing and both extra-articular malunion (dorsal angulation and radial shortening) and intra-articular damage from the original injury.³⁵ That said, radiographic arthritis does not always mean symptomatic arthritis: many patients develop X-ray changes over time without ever having pain that bothers them, which circles back to the broader lesson that what the wrist looks like on a film and how it feels in daily life are surprisingly different things.