Background:The standard of care for plating displaced midshaft clavicle fractures has been 6 cortices of purchase on each side of the fracture. The use of locking plates and screws may afford equivalent biomechanical strength with fewer cortices of purchase on each side of the fracture.Purpose:To compare the biomechanical and clinical performance of 3- versus 2-screw constructs for plating displaced midshaft clavicle fractures.Study Design:Controlled laboratory study/cohort study; Level of evidence, 3.Methods:Lateral fragments of simulated midshaft fractures in 10 pairs of cadaveric clavicles were randomly assigned to plate fixation with either 3 nonlocking screws or 2 locking screws. Cyclic tensile loads were applied along the long axis of the clavicle. The constructs were then loaded to failure with pullout forces applied parallel to the long axis of the screws. Additionally, clinical outcomes of patients who had midshaft clavicle fractures that were surgically repaired were retrospectively identified and compared; 21 patients were treated with 3-screw constructs and 20 with 2-screw constructs.Results:Biomechanically, there were no significant differences for cyclic displacement, stiffness, yield load, or ultimate load between groups. Forces required for screw pullout were considerably higher than physiologic forces experienced by a healing clavicle in vivo. Clinically, there were no significant differences in American Shoulder and Elbow Surgeons, Constant, visual analog scale, and Single Assessment Numeric Evaluation scores; complications; or mean time to union. Additionally, we found that the plates used in the 2-screw group were consistently shorter.Conclusion:Plate fixation of displaced midshaft clavicle fractures with 4 cortices of purchase with 2 locking screws demonstrated no significant differences biomechanically when compared with fixation with 6 cortices of purchase and 3 nonlocking screws. Clinically, there were no significant differences in outcomes or complications seen in patients receiving 2- or 3-screw constructs.Clinical Relevance:Clinical benefits of using the 3-screw construct for plate fixation include decreased surgical exposure, morbidity, and cost, and the use of shorter and noncontoured straight plates eliminates the extra time and technical difficulty associated with matching longer contoured plates to the complex morphology of the clavicle.
Background: The most common method to determine a traumatic knee arthrotomy is the saline load challenge. Recent literature has suggested high false-negative and false-positive rates using this method and also has shown that CT was effective in detecting these arthrotomies. The purpose of this study was to evaluate another method of diagnosing these injuries. We hypothesized that plain radiographs of the knee could be an effective alternative study in diagnosing a traumatic arthrotomy. Methods: After institutional review board approval, this retrospective cohort review identified 32 patients diagnosed with a traumatic arthrotomy by direct visualization in the operating room and another 32 patients with no evidence of traumatic arthopathy, according to the surgeon. The preoperative anteroposterior and lateral radiographs from both cohorts were blinded and randomized and then submitted to a radiologist to review for the presence of air in the joint space. Sensitivity and specificity were calculated based on radiographic review compared with the gold standard of direct visualization. Results: Plain film anteroposterior and lateral knee radiographs had a sensitivity of 78.1% and a specificity of 90.6% with a positive predictive value of 89.3% for diagnosis of traumatic arthrotomy in our cohort. Conclusions: Our study suggests that radiographs, which are obtained as standard of care during work-up of knee injuries, have a relatively high sensitivity and specificity and can be used as an adjunct to help diagnose a traumatic arthrotomy of the knee joint. Level of Evidence: Level III.
Displaced pediatric forearm fractures often are treated with closed reduction and immobilization. Recent literature demonstrates no difference in maintaining alignment or needing repeat intervention in patients immobilized with either a single sugar-tong splint or a long-arm cast, but most series include patients with distal fractures. This study included patients 3 to 15 years old who underwent closed reduction and immobilization for displaced midshaft or proximal forearm fractures. Radiographs from the time of injury, after reduction, and at 4-week follow-up were reviewed for coronal and sagittal plane angular alignment. Secondary interventions also were recorded. A total of 121 patients (70 long-arm cast, 51 simple sugar-tong splint) met inclusion criteria. Groups were matched in terms of age ( P =.95), sex ( P =.41), body mass index ( P =.12), and angular deformity prior to reduction in the sagittal ( P =.78) and coronal ( P =.83) planes. Following closed reduction, sagittal ( P =.003) and coronal ( P =.002) alignment improved significantly in all patients. At 4-week follow-up, there were no significant differences in sagittal ( P =.15) or coronal ( P =.68) alignment between the 2 groups. Nine patients underwent a secondary intervention after the index reduction (long-arm cast, n=7; simple sugar-tong splint, n=2), with no statistically significant difference between groups ( P =.30). There were no statistically significant differences between patients managed with long-arm cast or simple sugar-tong splint regarding residual sagittal or coronal plane deformity at 4-week follow-up or incidence of secondary intervention. These findings indicate simple sugar-tong splint and long-arm cast appear to be acceptable and equivalent methods of immobilization for these injuries. [ Orthopedics . 2021;44(2):e178–e182.]
The purpose of this study was to compare the efficacy of a single-sugar-tong splint (SSTS) to a long-arm cast (LAC) in maintaining reduction of pediatric forearm fractures, while avoiding secondary intervention. One hundred patients age 3–15 with a forearm fracture requiring a reduction and immobilization were evaluated (50 LAC and 50 SSTS). Medical records and radiographs were reviewed at injury, postreduction, and at 1, 2, and 4 weeks postinjury. Sagittal and coronal angular deformities were recorded. Any secondary intervention due to loss of reduction was documented. The groups were matched by age (P = 0.19), sex (P = 0.26), mechanism of injury (P = 0.66), average injury sagittal deformity (LAC 27.4°, SSTS 25.4°; P = 0.50), and average injury coronal deformity (LAC 15.5°, SSTS 16°; P = 0.80) At 4 weeks postinjury follow-up, there were no statistically significant differences between use of an SSTS or LAC when comparing postimmobilization sagittal alignment (LAC 10.3 ± 7.2, SSTS 8.4 ± 5.1°; P = 0.46), coronal alignment (LAC 6.9 ± 4.6, SSTS 7.6 ± 9.3°; P = 0.46), or need for repeat manipulation or surgery (LAC 4/50, SSTS 3/50; P = 0.70).
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