Functional outcomes of unstable ankle fractures with and without syndesmotic fixation in the adolescent population.

PurposeThe purpose of this study was to compare functional outcomes of adolescents with and without ankle syndesmotic injuries and identify predictors of functional outcome after operative ankle fractures.MethodsA retrospective review was conducted on operative adolescent ankle fractures treated between 2009 and 2019 with a minimum of one-year follow-up (mean 4.35 years). Patients who underwent syndesmotic fixation (SF) (n = 48) were compared with operative ankle fractures without syndesmotic injury (n = 63). Functional outcomes were assessed using standardized questionnaires, specifically the Foot and Ankle Ability Measure (FAAM) and Single Assessment Numerical Evaluation.ResultsThere were no differences in patient-reported outcomes, rates of return to sport or complications between groups with and without SF. The SF group had a longer tourniquet time (p = 0.04), duration of non-weight-bearing (p = 0.01), more Weber C fibula fractures (p < 0.001), fewer medial malleolus fractures (p = 0.03) and more frequently underwent implant removal (p < 0.0001). Male sex, lower body mass index (BMI) and longer duration of follow-up were significant predictors of a higher FAAM sports score using multivariable linear regression. SF was not a predictor of functional outcome.ConclusionThis study demonstrated that patients that undergo surgical fixation of syndesmotic injuries have equivalent functional outcomes compared to operative ankle fractures without intraoperative evidence of syndesmotic injury. We also identified that male sex, lower BMI and longer duration of follow-up are predictors of a good functional outcome.Level of evidenceIII

Extra-articular, Intraepiphyseal Drilling for Osteochondritis Dissecans of the Knee

Symptomatic osteochondritis dissecans lesions of the knee frequently occur in skeletally immature patients. When conservative treatment fails, retro-articular drilling, also known as intraepiphyseal extra-articular drilling, becomes a viable treatment option. The purpose of this article is to describe our surgical technique and postoperative management of patients with stable osteochondritis dissecans lesions involving the femoral condyles. This technique is reproducible, uses readily available equipment, and has yielded good clinical outcomes with high healing rates and relatively early return to sports

Prevalence of trochlear dysplasia in infants evaluated for developmental dysplasia of the hip.

PurposeThe purpose of this study was to define the incidence of trochlear dysplasia in an infant cohort being screened for developmental dysplasia of the hip (DDH).MethodsNewborns screened for DDH that were evaluated with ultrasound for the presence of trochlear dysplasia were retrospectively reviewed. The sulcus angle and trochlear depth were measured. Based on previous work, trochlear dysplasia was defined as a sulcus angle of > 159°. Our newborn cohort was then analyzed to identify potential risk factors for trochlear dysplasia.ResultsA total of 383 knees in 196 infants were studied. In total, 52% were referred for breech intrauterine positioning and 21% were ultimately diagnosed with DDH and had treatment initiated with a Pavlik harness. Of the entire cohort, 8% of knees were deemed to have trochlear dysplasia. Breech patients were found to have a flatter sulcus angle than those that were not breech (149.5° (sd 7.2°) versus 147.9° (sd 7.5°); p = 0.028). Similarly, a shallower trochlear depth was identified in breech patients versus non-breech patients (1.6 mm (sd 0.4) versus 1.8 mm (sd 0.4); p = 0.019). Those with trochlear dysplasia (as defined by sulcus angle > 159°) did show a smaller alpha angle (i.e. more dysplastic hip) as compared with those without trochlear dysplasia (59.2° (sd 10.2°) versus 65.9° (sd 7.5°); p < 0.001). Hips with DDH were 2.4-times more likely to have knees with trochlear dysplasia (95% confidence interval 1.1 to 5.3).ConclusionUltrasound screening of newborn knees reveals that trochlear dysplasia is relatively common in breech babies with DDH.Level of evidenceIII

3D Characterization of Acetabular Deficiency in Children with Developmental Dysplasia of the Hip.

BackgroundThe purpose of this study is to determine if a quantitative method can be used to identify differences in 3D morphology between normal and developmentally dysplastic hips and to identify specific areas of undercoverage in children with DDH compared to age- and sex-matched controls.MethodsSubjects were included if they were typically developing children with no other underlying conditions affecting their musculoskeletal system and had an available pelvic CT scan (67 hips). Custom software was used to measure standard variables defining acetabular morphology (version, tilt, surface area). Acetabuli were divided into equal octants; coverage angles were measured for each octant of interest. Variables were compared with age- and sex-matched controls (128 hips) using analysis of variance or the Mann-Whitney test.ResultsHips with DDH were more anteverted compared to normal hips (DDH: 22.6˚, Control: 16.4˚, p < 0.001). The surface area was similar between groups. 28% of hips had a global deficiency, 24% were anteriorly deficient, 19% were laterally deficient, 10% were anteverted (under covered anteriorly and over covered posteriorly), 3% were posteriorly deficient, and 15% of hips had borderline undercoverage. None of the hips in this cohort were found to be retroverted.ConclusionsThis is the first study to quantify the 3D acetabular deficiency in children with DDH compared to age- and sex-matched controls. We found wide variability in coverage patterns among dysplastic hips. It is imperative to define the specific acetabular deficiency for each individual patient prior to surgical correction.Level of evidenceIII - Case-control study

Stair falls: Caregiver's "missed step" as a source of childhood fractures

BackgroundThe purpose of this study was to describe fractures sustained by children and to analyze the associated costs when a caretaker falls down stairs while holding a child.Materials and methodsBetween 2004 and 2012, 16 children who sustained a fracture after a fall down stairs while being carried by a caregiver were identified. Parents/caregivers were interviewed to see how the fall occurred, and a cost analysis was performed.ResultsThe average age of the patients was 14.5 months (7--51 months). The lower extremity was involved in 15 of 16 fractures, with 8 involving the femur. The majority were buckle fractures, but all diaphyseal femur fractures were spiral. Three patients required a reduction in the operating room. All fractures healed with cast immobilization. Five patients underwent skeletal surveys, as the treating physicians were concerned about potential child abuse. The average cost of treatment was $6785 (range$948--45,876). Detailed histories from the caregivers showed that they "missed a step" due to the child being carried in front of the caregiver, obscuring their vision.ConclusionsA fall in a caregiver"s arms while going down stairs can result in multiple orthopedic injuries. The costs of treating these injuries are not insignificant, and the suspicion of child abuse can be both costly and unnecessary in the case of a true accident. While descending the stairs with a child in their arms, the caregiver should hold the child to the side so as not to obscure their vision of the step with one arm, ideally holding the handrail with the other.Level of evidenceIV case series

Recurrence of Patellar Instability in Adolescents Undergoing Surgery for Osteochondral Defects Without Concomitant Ligament Reconstruction.

BackgroundFirst-time patellar dislocation with an associated chondral or osteochondral loose body is typically treated operatively to address the loose fragment. The incidence of recurrent instability in this patient population if the medial patellofemoral ligament (MPFL) is not reconstructed is unknown.PurposeTo determine the recurrent instability rate in patients undergoing surgery for patellar instability with chondral or osteochondral loose bodies, as well as to identify and stratify risk factors for recurrent instability.Study designCase series; Level of evidence, 4.MethodsThis was a retrospective analysis of adolescent patients treated operatively for acute patellar dislocation with associated chondral or osteochondral loose bodies between 2010 and 2016 at a single pediatric level I trauma center with minimum 2-year follow-up. Potential demographic, injury-related, radiographic, and surgical risk factors were recorded. The primary outcome variable was recurrent subluxation and/or dislocation. Secondary outcome variables included need for additional procedures, Kujala score, Single Assessment Numerical Evaluation (SANE) score, and patient satisfaction.ResultsForty-one patients were included. In total, 61% experienced recurrent instability at a mean follow-up of 4.1 years and 39% required subsequent MPFL reconstruction. Tibial tubercle-trochlear groove (TT-TG) distance greater than 15 mm was a risk factor for recurrent instability ( P = .03). Patients with TT-TG distance greater than 15 mm and greater than 20 mm had recurrent instability rates of 75% and 86%, respectively. MPFL repair did not reduce the rate of recurrent instability ( P = .87). Recurrent instability was associated with significantly worse mean Kujala (93.9 vs 83.0; P = .01), SANE (88.9 vs 73.1; P = .01), and patient satisfaction scores (9.4 vs 7.3; P = .002).ConclusionIf the MPFL is not reconstructed during index loose body treatment, children have a 61% recurrent instability rate. Patients with TT-TG distance greater than 15 mm, and particularly greater than 20 mm, are at highest risk for recurrent instability

Use of a Modified All-Epiphyseal Technique for Anterior Cruciate Ligament Reconstruction in the Skeletally Immature Patient.

BackgroundMultiple surgical approaches have been described for the management of anterior cruciate ligament (ACL) tears in skeletally immature patients.PurposeTo provide a detailed description of a modified all-epiphyseal ACL reconstruction and report early outcomes and complications with this new technique.Study designCase series; Level of evidence, 4.MethodsA retrospective review of all skeletally immature patients undergoing ACL reconstruction via a modified all-epiphyseal technique prior to July 2015 was performed. Skeletally immature male patients with a bone age of 8 to 15 years and female patients with a bone age of 8 to 12 years were selectively indicated for this procedure. The surgical technique involved an all-epiphyseal femoral tunnel drilled parallel and distal to the physis as well as an all-epiphyseal tibial tunnel. Both tunnels were placed in the anatomic footprint of the ACL. Tibial fixation was achieved first with a suspensory cortical fixation device followed by fixation on the femur with an interference screw.ResultsDuring the study period, 30 patients with a mean bone age of 11.8 years underwent ACL reconstruction with this physeal-sparing technique; 26 patients (87%) achieved a minimum follow-up of 2 years. At final follow-up, the mean Lysholm score, Single Assessment Numeric Evaluation score, patient satisfaction, return-to-sport rate, and Tegner activity score were 93, 89, 9.2, 94%, and 7.6, respectively. Four graft failures (15%) and 3 (12%) contralateral ACL tears were identified. One patient was noted to have a 12-mm leg-length discrepancy at final follow-up, which required no additional treatment. No other leg-length discrepancies or angular deformities were identified.ConclusionThe modified all-epiphyseal ACL reconstruction technique achieved good functional outcomes, a high rate of return to sport, low failure rates, and low physeal injury rates at a mean follow-up of 3.2 years. Skeletally immature patients with an ACL tear requiring reconstruction pose a unique challenge for sports medicine clinicians. While several previous approaches have been described for this patient population, the proposed benefits of this new technique are that it is anatomic, it is physeal sparing, it uses osseous tunnels, and it provides good initial graft fixation strength

Improving Lower Extremity Casting Quality by Providing an Experienced Assistant in Pediatric Tibia Fractures Managed by Trainees

Background: The value of employing an orthopedic technician or advanced practice provider (OT/APP) to assist trainees during on-call hours has not been assessed. As the third most common pediatric long bone fracture, most tibial fractures can be managed with closed reduction and casting. Purpose: We sought to determine whether clinical outcomes could be positively affected for traumatic childhood tibia fractures by using an experienced OT/APP to aid orthopedic surgery residents with closed reduction and casting. Methods: We performed a retrospective chart review of tibial shaft fractures that occurred between 2010 and January 2017. Fractures undergoing manipulation and closed reduction by orthopedic surgery residents (post-graduate year 2 to 4) in the emergency department were included and differentiated into 2 cohorts: (1) residents who performed the procedure alone and (2) residents who were assisted by an OT/APP. Comparisons in cast quality and treatment success were made using univariate statistics followed by a multivariate Classification and Regression Tree (CART) analysis. Results: Of the 73 patients who met our criteria, 38 received treatment by a resident alone and 35 by a resident assisted by an OT/APP. Evidence to support our hypothesis was found with the resident-alone group "over" padding the casts posteriorly. Univariate analysis demonstrated that the rate of subsequent surgical intervention was more than double in the resident-alone group (31% vs 14%), yet OT/APP castings underwent more wedging at follow-up (17% vs 0%). CART analysis revealed initial fracture severity and lack of OT/APP assistance as predictors of surgical intervention with terminal nodes, in increasing order of risk of requiring surgical intervention: lower translation on sagittal and anteroposterior (AP), lower sagittal translation with greater AP translation, greater sagittal translation with OT/APP assistance, and greater sagittal translation without assistance. The initiation of a cast application-training program in 2015 decreased the need for surgical treatment in the resident-only group (pre-program 38.5% vs post-program 17%), although this was not statistically significant. Conclusion: When residents were assisted by OT/APP with initial tibia closed reduction and casting, subsequent loss of reduction was more likely to be managed with cast wedging; when this assistance was not available, there was a higher rate of fractures needing surgical intervention due, in part, to poor casting technique. The reduction in the rate of surgical intervention after an internal training program was implemented suggests that trainees may improve their casting ability without added help of an experienced assistant. Future study should be performed on distal radius fractures to determine if the presented findings are valid across casting types