Clinical Review

Compartment Syndrome in Children: Diagnosis and Management

Am J Orthop. 2016 January;45(1):19-22

Compartment syndrome (CS) can present differently in children than in adults. Increased need for analgesics is the first sign of evolving CS in children. Children with supracondylar humeral fractures, floating elbow injuries, operatively treated forearm fractures, and tibial fractures are at high risk for CS. Elbow flexion beyond 90° in supracondylar humeral fractures and closed treatment of forearm fractures in floating elbow injuries are associated with increased risk for CS. Prompt diagnosis and treatment with fasciotomy in children result in excellent long-term outcomes.

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References

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Compartment syndrome (CS) is one of the true orthopedic emergencies. Identifying the high-risk patient, making a prompt diagnosis, and initiating effective treatment are the crucial steps in avoiding a poor outcome. A physician’s inability to communicate with young children can interfere with diagnosing CS in a timely fashion. Many young patients in hospitals are admitted to pediatric floors where routine orthopedic care is not the norm and staff are unfamiliar with the signs and symptoms of evolving CS. As orthopedic surgeons are often involved in caring for these patients, they should be aware of the aspects of CS that are unique to children and should be able to identify patients who are at risk and would benefit from close monitoring. In addition, given the consequences of late diagnosis, early diagnosis is important from a medicolegal standpoint. Only 44% of cases of adult and pediatric CS are decided in favor of treating physicians, compared with 75% of cases in other orthopedic malpractice claims.1,2

Risk Factors for Posttraumatic Compartment Syndrome

Supracondylar Humeral Fracture

CS is a well-described complication of this injury. CS develops in 0.1% to 0.3% of children who present with supracondylar humeral fracture.^3,4 Casted elbow flexion beyond 90° and concomitant vascular injury put these children at increased risk for CS. Mubarak and Carroll⁵ reported 9 cases of CS in the volar compartment of the forearm after an extension-type supracondylar humeral fracture and attributed 8 of them to elbow flexion beyond 90° after closed reduction. In 29 children with supracondylar humeral fracture,Battaglia and colleagues³found the highest compartment pressure in the deep volar compartment, especially near the fracture site, as well as a significant increase in pressure with the elbow flexed beyond 90°.

In a study of children with supracondylar humeral fracture, Choi and colleagues⁶ found 2 cases of CS among 9 patients who presented with a pulseless, poorly perfused hand and no cases of CS among 24 patients who presented with a pulseless but well-perfused hand.

Studies have found that a treatment delay of 8 to 12 hours did not increase the rate of CS in Gartland type 2 and type 3 fractures.^7-10 The investigators in these studies did not recommend delaying treatment of patients with neurologic deficit and absent radial pulse. Ramachandran and colleagues4 reported 11 cases of CS in patients with low-energy supracondylar humeral fracture and intact radial pulse at presentation. The patients who developed CS presented with severe swelling, and their mean treatment delay was 22 hours (range, 6-64 hours). Given the data, we do not recommend delayed treatment for children with supracondylar humeral fracture and neurologic deficit or absent pulse. We do recommend close inpatient preoperative monitoring of patients with severe swelling.

CS after supracondylar humeral fracture is mostly seen in the volar compartment of the forearm, but it has also been reported in the mobile wad, the anterior arm compartment, and the posterior arm compartment.^11,12

Floating Elbow

CS has been reported in children with ipsilateral humeral and forearm fractures. Blakemore and colleagues¹³ reported a 33% rate of CS in children with displaced distal humeral and forearm fractures. A retrospective review of 16 cases of floating elbow treated at Boston Children’s Hospital found CS in 2 patients and incipient CS in 4 of 10 patients with forearm fractures treated with closed reduction and plaster casting. There were no signs of CS in 6 patients with distal humeral and forearm fractures stabilized with Kirschner wires.¹⁴ Given the data, we do not recommend circumferential casting for forearm fractures in children with floating elbow.

Forearm Fracture

Haasbeek and Cole¹⁵reported CS in 5 (11%) of 46 children with open forearm fracture. Yuan and colleagues¹⁶ reported CS in 3 (6%) of 50 open forearm fractures and 3 of 30 closed fractures treated with closed reduction and intramedullary nailing. They found increased risk for CS in patients with longer operative time, indicating prolonged closed manipulation of these fractures as a risk factor for CS. They did not find any cases of CS among 205 forearm fractures treated with closed reduction and casting.

Flynn and colleagues17 reported CS in 2 of 30 patients treated with intramedullary nailing within 24 hours of injury and in 0 of 73 patients treated after 24 hours.

Blackman and colleagues¹⁸ reported CS in 3 (7.7%) of 39 open forearm fractures and 0 of 74 closed fractures treated operatively. In their series, a small incision was made to facilitate reduction in 38 (51.4%) of 74 closed fractures to decrease closed manipulation and operative time. The rate of CS after intramedullary nailing of closed forearm fractures was lower in this series than in similar reports in the literature.