The effects of surgical delay on the outcome of pediatric supracondylar humeral fractures.

BACKGROUND: Occasionally, the treatment of a pediatric supracondylar humeral fracture is delayed owing to lack of an available treating physician, necessitating transfer of the child, or delay in availability of an operating room. The purpose of this study is to prospectively evaluate whether delayed pinning of these fractures affects the outcome or number of complications. METHODS: We reviewed information that was prospectively collected on 145 pediatric supracondylar humeral fractures that were treated by closed reduction and percutaneous pinning, with a minimum follow-up of 8 weeks. To determine the effect of delayed treatment, we compared a group of fractures that was treated within the first 21 hours after their presentation to our urgent care center (Group A) with a group that was treated after more than 21 hours (Group B). We compared the following variables: need for open reduction, length of surgery, length of hospitalization, the presence of neurologic complications, vascular complications including compartment syndrome, pin tract infection, loss of fixation, final carrying angle, range of motion, and outcome. RESULTS: Overall, the mean time from presentation to surgery for both groups was 52 hours. This interval was greater for Gartland type II fractures (65 h) than for Gartland type III fractures (19 h) (P=0.00001). There was no need for an open reduction in either group. There were no significant differences between the groups regarding iatrogenic nerve injuries, vascular complications, compartment syndromes, surgical time, final carrying angle, range of motion, and outcome. CONCLUSIONS: The results of this prospective study found that a delay in pinning closed supracondylar humeral fractures in children did not lead to a higher incidence of open reduction or a greater number of complications. Although the urgency of treating any child with a supracondylar fracture should be individualized, our study suggests that most of these injuries can be managed safely in a delayed fashion without compromising the clinical outcome. We recommend careful monitoring of any patient with type 3 injury whose treatment is delayed. LEVEL OF EVIDENCE: II.

Prospective longitudinal evaluation of elbow motion following pediatric supracondylar humeral fractures.

BACKGROUND: Temporary elbow stiffness after the treatment of a supracondylar humeral fracture in a child is often a concern of parents. However, little attention has been devoted to documenting, longitudinally, the time required for motion recovery. The purpose of the present study was to provide a prospective, longitudinal evaluation of elbow motion in a large population of pediatric patients undergoing treatment of a supracondylar humeral fracture. METHODS: We prospectively examined 373 patients (375 fractures) who presented to our urgent care center between March 1, 2007, and September 30, 2008. On the basis of a standard protocol, patients were managed with either casting or surgery, depending on the severity of the injury, and then were followed for a minimum of seven weeks. Values of elbow flexion and extension were recorded, and the relative arc of motion was calculated as a percentage of the motion of the contralateral elbow. RESULTS: In general, following a supracondylar humeral fracture, the greatest increases in flexion, extension, and the absolute and relative arcs of motion are observed within the first month after cast removal, with a progressive improvement for up to forty-eight weeks after the injury. Age had a significant effect on the recovery of elbow motion, with patients older than five years of age demonstrating a 3% to 9% lower relative arc of motion at the follow-up points in comparison with younger patients. Similarly, patients with more-severe fractures requiring surgical treatment demonstrated a decrease in relative elbow motion of 10% (with respect to the contralateral side) at the time of cast removal in comparison with those who were managed nonoperatively. CONCLUSIONS: The present study demonstrates that an initial rapid recovery in elbow motion can be expected after a supracondylar humeral fracture in a child, followed by a progressive improvement for up to one year after the injury. This motion recovery is slower in older patients and in those with more severe injuries.

Inter- and intra-observer reliability of the Baumann angle of the humerus in children with supracondylar humeral fractures.

The Baumann angle of the humerus has been commonly used as an outcome measure for supracondylar fractures in children. However, there is limited or no information about the reliability of this measurement. The purpose of this study was to determine the inter-observer reliability (IEOR) and intra-observer reliability (IAOR) of the Baumann angle of the humerus. The Baumann angle of the humerus was measured by five observers on the anteroposterior radiographs of 35 children's elbows, all of which had sustained a nondisplaced supracondylar humeral fracture. The values of IEOR and IAOR were calculated using a Pearson coefficient of correlation. Ranges of differences in the measurement of the Baumann angle of the humerus were established, and the percentage of agreement between observers was then calculated using those ranges. The Baumann angle of the humerus is a simple, repeatable and reliable measurement that can be used for the determination of the outcome of supracondylar humeral fractures in the paediatric population. An excellent IEOR was found for the measurement of the Baumann angle (r = 0.78, p = 0.0001). When the difference between observers in the reported measurement of the Baumann's angle was calculated to be within seven degrees of each other, at least four of the five observers agreed 100% of the time. Similarly, excellent values of IAOR were found for the measurement of the Baumann's angle (r = 0.80, p = 0.0001). Level of evidence for this study was III.