Complications After Distal Radius Fracture Surgery

Roughly two out of three patients who undergo surgery for a distal radius fracture experience at least one complication of some kind, though the vast majority are minor and resolve without further surgery. That headline number, drawn from a secondary analysis of a randomized trial, sounds alarming until you see how broadly “complication” is defined: it includes temporary nerve tingling, mild stiffness, and pin-site irritation alongside the rarer problems that actually require reoperation. The gap between “any complication” and “a complication that changes your life” is enormous, and understanding what falls where is the first step toward realistic expectations after wrist surgery.

How Common Are Complications, Really

The answer depends entirely on what you count. In the WRIST trial, a large multicenter study of adults over 60, about 65% of surgically treated patients reported at least one complication across all fixation methods. Nerve and bone-related issues were the most common categories, while tendon problems were less frequent. In the group treated with casting alone, malunion (the bone healing in an imperfect position) topped the list at about 34%, followed by arthritis at 25%.¹ Those numbers reflect an older population with more fragile bones, so they skew high compared to what a younger patient might face.

When researchers narrow the definition to complications that actually require a second procedure, the picture changes dramatically. A large retrospective study of nearly 1,600 wrists treated with a single type of volar locking plate found a total complication rate of about 7.5%, split roughly evenly between major and minor complications.² That gap between 65% and 7.5% tells you how much the definition matters. Both numbers are honest; they are just measuring different things.

Reoperation rates also vary by the type of hardware used. A population-level study found that patients treated with plates had a higher reoperation rate per person-year than those treated with external fixation or pins, though the timing differed: pinning and external fixation patients tended to develop complications earlier, while plated patients had issues that surfaced later.³ This likely reflects the nature of plate-related problems, which involve slow wear on tendons and delayed hardware irritation rather than the immediate wound issues that come with pins sticking through the skin.

Tendon Damage From the Inside

Tendon problems are among the most talked-about complications of volar plating because they can appear months or even years after surgery, long after you have stopped thinking about the operation. The tendon most at risk is the flexor pollicis longus (FPL), the tendon that bends your thumb. It runs directly over the surface of a volar plate, and if the plate sits even slightly too far toward the fingertips, repetitive contact can gradually fray and eventually rupture the tendon. Plates positioned at or past the watershed line of the distal radius have a higher rate of this attritional wear.⁴

FPL rupture is considered rare in absolute terms, but when it happens, the consequences are significant: you lose the ability to bend the tip of your thumb, which affects pinch grip and fine motor tasks. In one cohort study, all ruptures occurred in patients whose plates were graded as only mildly prominent, and some happened up to three years after surgery.⁵ A case report documented one rupture at 40 months, even though the plate edge was positioned at the accepted anatomical landmark.⁶ The takeaway is that even a well-placed plate can cause trouble over time, especially if the fracture settles and changes the relationship between the plate edge and the tendon.

Extensor tendons on the back of the wrist face a different threat. They sit on the opposite side of the bone from where a volar plate is placed, so direct plate contact is not the issue. Instead, the risk comes from screws that are slightly too long and poke through the dorsal cortex. A systematic review identified dorsal screw prominence and fracture fragments as the main culprits behind extensor tendon injuries after volar plating.⁷ A separate study found that screw protrusion greater than about 1.6 millimeters on the dorsal side was significantly associated with tendinitis, and the second extensor compartment (the one housing the wrist extensors) was the most commonly affected.⁸

Nerve Compression and Carpal Tunnel Syndrome

Median nerve compression was one of the most frequently recorded complications across all treatment groups in the WRIST trial, affecting roughly 15% to 25% of patients depending on the fixation method, with casting and pinning at the higher end.¹ Carpal tunnel syndrome after a distal radius fracture is not a single entity. It shows up in distinct waves with different causes.

A retrospective study of 105 wrists classified post-fracture carpal tunnel into three onset patterns. Acute cases, appearing within the first week, were strongly linked to high-energy injuries and complex fracture patterns. Subacute cases, showing up between one and twelve weeks, and delayed cases, emerging after three months, were more common in older women with simpler fracture types. In the delayed group, about 70% of patients already had signs of median nerve dysfunction in the opposite wrist, suggesting that the fracture unmasked a preexisting tendency toward carpal tunnel rather than directly causing it.⁹

Whether surgeons should routinely release the carpal tunnel at the time of fracture fixation remains debated. A review on the topic noted that patients who fracture their distal radius are at elevated risk for carpal tunnel syndrome both acutely and in the weeks or months afterward, but the evidence has not settled whether prophylactic release improves outcomes compared to treating symptoms if and when they develop.¹⁰

Interestingly, a meta-analysis comparing volar versus dorsal plate fixation found that the volar approach was associated with a higher risk of nerve-related complications overall and a roughly fourfold increase in carpal tunnel syndrome specifically, while the dorsal approach carried more tendon irritation.¹¹ Despite this, volar plating has become the dominant technique worldwide because it avoids the extensor tendon issues that plagued dorsal plates in earlier decades, and the total complication rates between the two approaches are statistically similar.¹²

Infection Rates Depend Heavily on What Is Sticking Through the Skin

The single biggest predictor of infection after distal radius surgery is whether the hardware stays entirely under the skin or pokes through it. A nationwide cohort study of more than 31,000 patients found surgical site infection rates of about 5% with plate fixation, 12% with percutaneous pinning, and 28% with external fixation. After adjusting for patient factors, external fixation carried nearly seven times the infection risk of plating, and percutaneous pinning carried about 2.7 times the risk.¹³

A systematic review confirmed the pattern, finding pin-tract infections accounted for about 61% of all reported infections, with the overall infection rate across fixation methods sitting around 5%. Plate fixation had the lowest infection rate at roughly 2%, while Kirschner-wire fixation came in around 12% and external fixation around 14%.¹⁴ The good news is that deep infection after plate fixation is genuinely uncommon, reported at less than 1%, and when it does occur it typically responds to hardware removal and antibiotics.¹⁵

When the Plate Needs to Come Out

Not every complication after volar plating requires plate removal, and not every plate removal is driven by a complication. A systematic review found an average hardware removal rate of about 9%, with the reasons roughly split among routine removal (22%), tendon irritation or tenosynovitis (14%), hardware problems (14%), and patient request (13%). There was a strong correlation between removal rate and complication rate, suggesting that practices with higher complication awareness tend to remove hardware more proactively.¹⁶

At one institution, among 33 patients who had their plates removed, pain was the most common reason at 30%, followed by tenosynovitis (27%), malunion (24%), and infection (12%).¹⁷ On the flip side, a study comparing patients who kept their dorsal plates versus those who had them removed found that the removal group had worse subjective scores, suggesting the plates were removed because patients were already doing poorly, not that keeping a plate in caused problems for those without symptoms.¹⁸ The practical point: if your plate is not causing pain, tendon symptoms, or stiffness, there is usually no medical reason to take it out.

Complex Regional Pain Syndrome

Complex regional pain syndrome (CRPS) is the complication patients fear most and understand least. It involves exaggerated pain, swelling, color changes, and stiffness in the affected limb that are out of proportion to the original injury. A case report described a patient who developed CRPS three months after a distal radius fracture, with the forearm showing swelling, warmth, pain, and severely limited movement.¹⁹ It can occur after both surgical and nonsurgical treatment, and the mechanism is still not fully understood.

Vitamin C supplementation has been explored as a preventive measure, though the evidence is mixed. One large multicenter trial found that 500 milligrams of vitamin C daily for 50 days after a wrist fracture reduced CRPS rates from about 10% in the placebo group to under 2%.²⁰ However, a meta-analysis pooling three trials concluded that vitamin C did not reach a statistically significant benefit for CRPS prevention, noting substantial inconsistency across studies.²¹ A smaller trial testing regional vitamin C delivery (injected into the arm via a tourniquet-controlled technique) found a much larger apparent effect, with CRPS rates of about 23% in the vitamin C group versus 46% in controls.²² Given the low cost and safety of oral vitamin C, many surgeons still recommend it despite the uncertain meta-analytic findings, but it is far from a guaranteed shield.

Joint Stiffness and What Drives It

Some degree of wrist stiffness after surgery is nearly universal in the short term, but persistent stiffness that limits daily function is a distinct problem. A study that tracked risk factors for radiocarpal joint stiffness after surgical fixation found four independent predictors: having a fracture that extended into the joint surface, severe swelling before surgery, inadequate restoration of the normal tilt of the bone on the palm side, and improper rehabilitation exercise.²³ Of those four, rehabilitation was the only one patients could influence after surgery. Starting exercises too aggressively risks swelling and pain, but waiting too long allows scar tissue to stiffen the joint. The timing and intensity of hand therapy matter more than most patients realize.

Longer-term joint degeneration is a concern when a fracture involves the wrist joint surface. Displaced intra-articular fractures that are not perfectly reduced leave a step-off in the cartilage surface, and even small mismatches can alter how forces are distributed across the joint. Post-traumatic osteoarthritis of the wrist is a recognized outcome of this altered mechanics, though the exact threshold of step-off that reliably leads to arthritis is not well defined.²⁴

Instability at the Other Wrist Joint

The distal radioulnar joint (DRUJ), where the radius and ulna meet near the wrist, is frequently injured alongside distal radius fractures but often overlooked during initial treatment. When the triangular fibrocartilage complex (TFCC), the soft tissue structure that stabilizes this joint, is torn, the forearm’s ability to rotate palm-up and palm-down can be affected. A meta-analysis comparing management strategies for acute DRUJ instability after distal radius fracture found that surgical TFCC repair actually led to lower grip strength and less forearm rotation compared to simpler treatments like casting or wire stabilization.²⁵ That counterintuitive finding suggests that in the acute setting, less invasive stabilization may be enough, and aggressive soft tissue repair might impair the very mobility it is trying to protect.

Catching Screw Problems Before They Cause Trouble

Screws that inadvertently penetrate the joint surface or protrude through the back of the bone are a preventable source of complications, but detecting them during surgery is harder than it sounds. Standard X-ray views taken in the operating room miss a surprising number of problem screws. In a cadaver study, rotational fluoroscopy (a moving X-ray sweep) achieved 93% sensitivity and 96% specificity for detecting screws that had broken through into the joint, significantly outperforming most standard static views.²⁶

For dorsal screw penetration, specialized angled views are needed. A study comparing four fluoroscopic views found that the dorsal tangential view was 95% sensitive for detecting even one millimeter of screw penetration into the third dorsal compartment, while the standard lateral view caught only 68% of the same penetrations.²⁷ These imaging techniques are part of what separates a thorough intraoperative check from a cursory one, and they directly reduce the risk of tendon irritation and joint damage down the road.

Who Is at Higher Risk

Smoking is one of the clearest modifiable risk factors. A study of 417 patients at a level-one trauma center found that smokers had significantly higher complication rates after distal radius fixation, and this held even after accounting for diabetes and obesity.²⁸ The effect of diabetes is more nuanced. A large database analysis found that patients with diabetes had a low overall complication rate after distal radius surgery, with diabetes predicting only rare systemic problems like unplanned intubation and sepsis rather than the wound-healing and stiffness issues you might expect.²⁹ Another study found no significant difference in range of motion, grip strength, bone healing time, or functional outcomes between smokers and nonsmokers, complicating the picture somewhat.³⁰ As with most surgical risk factors, the effect likely depends on how heavily someone smokes and what other health conditions are in play.

Surgeon experience also matters in a measurable way. A study that assessed outcomes by surgeon volume found that patients operated on by low-volume surgeons (performing fewer than eight volar locking plate cases during the study period) had a complication rate of about 27%, compared to roughly 7.5% for high-volume surgeons. Low volume was associated with nearly five times the risk of complications.³¹ This is not unusual in orthopedic surgery; technical familiarity with plate positioning, screw length selection, and soft tissue handling improves with repetition. For patients, the practical implication is that choosing a surgeon who does a reasonable volume of these procedures is one of the few controllable factors that meaningfully shifts the odds.

When the Patient Is Still Growing

Children and adolescents bring a completely different set of concerns. Their bones have open growth plates near the wrist, and any fixation that crosses or damages these growth plates can disrupt normal bone development. A systematic review of pediatric distal radius fracture management emphasized that metaphyseal fractures (fractures of the wider part of the bone near the wrist) are primarily at risk for redisplacement and mechanical failure, while physeal fractures (those involving the growth plate itself) carry the added risk of growth disturbance and premature arrest. Hardware that crosses the growth plate introduces an iatrogenic threat that must be weighed carefully against the need to stabilize an unstable fracture.³² In practice, this means pediatric surgeons lean toward minimally invasive fixation and accept slightly less perfect fracture alignment to avoid growth plate damage, a trade-off that would not make sense in an adult.