Patrick M. Carry

Comparison of Allograft Versus Autograft Anterior Cruciate Ligament Reconstruction Graft Survival in an Active Adolescent Cohort

Background: Graft selection for anterior cruciate ligament (ACL) reconstructive surgery is a controversial topic. Few studies have compared graft outcomes in adolescents. Purpose: To identify factors related to ACL graft failure in an adolescent cohort. Study Design: Case-control study; Level of evidence, 3. Methods: After institutional review board approval was obtained, adolescent subjects (age range, 11-18 years) who underwent primary ACL reconstruction surgery at a large tertiary pediatric hospital between July 2005 and July 2009 were identified through a query of International Classification of Diseases, 9th Revision, diagnostic and Current Procedural Terminology codes. Subject data were obtained by means of a retrospective chart review, phone survey, and the administration of functional knee outcome instruments. A multivariate Cox proportional hazards regression analysis was used to analyze factors related to graft survival. Results: The average ages at surgery in the allograft (n = 38) and autograft (n = 35) groups were 15.29 ± 2.24 and 15.60 ± 1.57 years, respectively. There were 11 graft failures (28.95%) in the allograft group compared with 4 graft failures (11.43%) in the autograft group. In the multivariate model, graft type (P = .0352) and postoperative knee laxity according to the Lachman test (P = .0217) were the only variables significantly related to graft survival. The hazard of graft failure was 4.4 (95% CI, 1.23-18.89) times greater in the allograft group compared with the autograft group. The hazard of graft failure was 5.28 times (95% CI, 1.1-12.72; P = .0217) greater for a subject who demonstrated increased postoperative knee laxity relative to the contralateral knee. The risk for autograft failure tended to remain constant 24 to 48 months after initial surgery, whereas the risk for allograft failure continued to increase during postoperative months 24 to 48. There were no differences (P > .05) between the allograft and autograft groups with respect to International Knee Documentation Committee score, Lysholm score, and the rate of return to previous activity level. Conclusion: Graft type and postoperative knee laxity were identified as significant predictors of graft survival. On the basis of this large retrospective cohort, we recommend the use of autogenous grafts in children and adolescents undergoing primary, transphyseal ACL reconstruction. Patients who demonstrate increased translation during a postoperative Lachman test should be carefully followed because of concerns for subsequent graft failure.

Factors Predictive of Concomitant Injuries Among Children and Adolescents Undergoing Anterior Cruciate Ligament Surgery

Background: The timing of treatment for pediatric anterior cruciate ligament (ACL) injuries remains controversial. The risks of delaying reconstruction and the differences between age groups are poorly defined. Purpose: To investigate factors that contribute to the prevalence and severity of concomitant chondral and meniscal injuries among patients aged 14 to 19 years versus those aged ≤14 years at the time of ACL reconstruction. The hypothesis was that concomitant injuries would be more prevalent in older versus younger subjects. Also, a delay in surgery would be predictive of the presence and severity of concomitant knee injuries requiring additional operative procedures. Study Methods: Cohort study; Level of evidence, 3. Methods: All subjects who underwent primary ACL reconstruction at a single tertiary pediatric hospital between 2005 and 2012 were retrospectively reviewed. The location, severity, and treatment of all concomitant knee injuries were recorded. Chi-square tests were used to compare the prevalence of chondral and meniscal injuries in the older (age, 14-19 years; n = 165) versus younger (age, ≤14 years; n = 66) cohorts. A multivariable logistic regression analysis was used to identify factors related to the presence of a concomitant injury that required additional treatment. Kaplan-Meier analyses were used to explore the relation between time to surgery and meniscal injury severity. Results: There was a significant relationship between time to surgery and the development of an irreparable meniscal injury (P < .05 for all) in both the younger and older groups. Time to surgery correlated with severity of chondral injury in the younger cohort (P = .0343) but not in the older cohort (P = .8877). In the younger cohort, only a delay in surgery >3 months (odds ratio [OR] = 4.8; 95% CI, 1.7-14.4; P = .0027) was significantly predictive of the presence of an injury that required additional operative procedures. In the older patients, a return to activity before surgery (OR = 3.8; 95% CI, 1.52-11.9; P = .0034) and obesity (OR = 2.5; 95% CI, 1.1-7.4; P = .0381) were significantly predictive of an injury that required additional operative procedures. Conclusion: Compared with younger subjects, the prevalence of concomitant knee injuries as well as the need for additional operative procedures was greater among older subjects. A delay to surgery correlated with increased severity of injury among both older and younger populations. A delay in surgery >3 months was the strongest predictor of the development of a concomitant injury in the younger cohort. A return to activity and obesity were significantly related to the presence of a concomitant knee injury in the older cohort.

A survey of physician opinion: adolescent midshaft clavicle fracture treatment preferences among POSNA members.

Background Based on recent evidence of inconsistent outcomes after the closed treatment of adult midshaft clavicle fractures, the management of similar fracture patterns in adolescents is being reevaluated. The primary aim of this study is to report current treatment preferences for adolescent midshaft clavicle fractures among pediatric orthopaedic physicians and to determine if recent adult literature has influenced clinical decision making. Methods An invitation email to a cross-sectional, web-based survey was sent to all members of the Pediatric Society of North America. With reference to adolescent sex and age, respondents were prompted to indicate their treatment preference (operative vs. nonoperative) in 4 common midshaft clavicle fracture patterns. The respondents were also asked to indicate if the following factors: findings in current literature supporting operative fixation in adults, arm dominance, and/or athletic status, influenced their preference for operative versus nonoperative management. Results Of the 949 Pediatric Society of North America members, 302 responded in full (32% response rate). The majority of physicians preferred nonoperative treatment for all fracture patterns. A logistic regression analysis revealed: older adolescent age (12 to 15 y vs. 16 to 19 y.) and evidence in recent adult literature (influence vs. no influence) to be significantly (P<0.01) predictive of physician preference toward operative fixation in angulated, displaced, and isolated segmental clavicle fracture patterns. Physician years of experience (<5 y vs. >5 y) significantly predicted treatment preferences in isolated segmental fractures only. Conclusions The percentage of physicians in favor of operative fixation tended to increase in reference to older adolescents and more severe fracture patterns but, nonoperative management was preferred in all fracture patterns. Evidence in recent adult literature was found to be the most significant factor influencing treatment preferences in this survey. Randomized controlled trials are needed to evaluate the efficacy of primary operative fixation of midshaft clavicle fractures in adolescent populations. Level of Evidence Cross-sectional electronic survey; level V-expert opinion.

Posterior Sternoclavicular Joint Injuries in the Adolescent Population A Meta-analysis

Background: Sternoclavicular dislocations are relatively infrequent and are generally divided into anterior and posterior disruptions, the former being the most common. While posterior sternoclavicular joint (PSCJ) injuries are very rare, they may be associated with life-threatening complications. The ideal management of these injuries, particularly in the adolescent population, has not been well described. Purpose: Through a meta-analysis of PSCJ injuries in the adolescent, we aimed to (1) describe the epidemiology of PSCJ injuries in relation to the mechanism of injury, associated complications, and treatment preferences; (2) compare the success of closed reduction when attempted <48 versus >48 hours after the initial injury; and (3) compare the outcomes of closed versus open treatment. Study Design: Meta-analysis. Methods: A thorough review of the English literature was performed to identify all cases of PSCJ dislocations or medial clavicular physeal fractures in patients aged 12 to 18 years. Patient-level data for 140 patients were extracted from 79 studies. Results: The mean age of the patients was 15.24 years. Forty-nine patients (35.00%) underwent closed treatment only, 42 (30.00%) open treatment alone, and 47 (33.57%) closed treatment followed by open treatment. Also, 55.8% of closed reductions performed within 48 hours were successful compared with 30.8% of those performed more than 48 hours after injury. After initial treatment, 92.31% of patients treated with closed reduction regained full function without recurrence as compared with 95.83% of patients treated operatively. Conclusion: Closed and open methods have proven highly effective for the treatment of PSCJ injuries. However, follow-up data reported in the literature vary considerably. Closed reduction is most effective when attempted less than 48 hours after the initial injury.

Evaluation of High-risk Patients Undergoing Spinal Surgery: A Matched Case Series

Background Neuromuscular (NM) spinal deformities necessitating surgical intervention present a difficult challenge to the medical community. Underlying comorbidities lead to extended hospital stays, significant complications, and social challenges in the extensive perioperative period. In response to this problem, a therapeutic algorithm, the Care Pathway for Spinal Surgery (CAPSS) has been developed at our institution to address this complex medical issue. Methods In 1999, a multidisciplinary team developed a treatment protocol, CAPSS, that emphasized perioperative work up and operative scheduling under the direction of a dedicated care coordinator. A case series analysis was conducted to compare the surgical outcomes from before and after CAPSS implementation. Statistical analyses were performed on a carefully paired subset of NM patients (N=9). Outcome measures were hospital length of stay (LOS), pediatric intensive care unit LOS, number of days intubated, surgical estimated blood loss, postoperative curve magnitude, percent curve correction, and perioperative complications. Results Statistical analyses indicated that the use of CAPSS provided significant reduction in overall LOS, pediatric intensive care unit LOS, and perioperative complication rate within this patient group. Conclusions CAPSS is an effective method to improve perisurgical care within the NM patients with spinal deformity necessitating operative stabilization. Level of Evidence III—Retrospective comparative study.

Does Strict Adherence to the Ponseti Method Improve Isolated Clubfoot Treatment Outcomes? A Two-institution Review.

BackgroundDespite being recognized as the gold standard in isolated clubfoot treatment, the Ponseti casting method has yielded variable results. Few studies have directly compared common predictors of treatment failure between institutions with high versus low failure rates.Questions/purposesWe asked: (1) is the provider’s rigid adherence to the Ponseti method associated with a lower likelihood of unplanned clubfoot surgery, and (2) at the institution that did not adhere rigidly to Ponseti’s principles, are any demographic or treatment-related factors associated with increased likelihood of unplanned clubfoot surgery?MethodsAfter institutional review board approval, a consecutive series of patients with a diagnosis of isolated clubfoot who underwent treatment between January 2003 and December 2007 were identified. At Institution 1, 91 of 133 patients met the eligibility criteria and were followed for a minimum of 2 years compared with 58 of 58 patients at Institution 2. At Institution 1, 16 providers managed care using a conservative casting approach based on the Ponseti method. However, treatment was adapted by the provider(s). At Institution 2, one orthopaedic surgeon managed care with strict adherence to the Ponseti method. Surgical indications at both institutions included the presence of a persistent equinovarus foot position while standing. A chart review was used to collect data related to proportion of patients undergoing unplanned additional treatment for deformity recurrences after Ponseti casting, demographics, and treatment patterns.ResultsThe proportion of subjects who underwent unplanned major surgical intervention was greater (odds ratio [OR], 51.1; 95% CI, 6.8–384.0; p < 0.001) at Institution 1 (60 of 131, 47%) compared with Institution 2 (two of 91, 2%). There was no difference (p = 0.200) in the proportion of patients who underwent additional casting, repeat tendo Achilles lengthening, and/or anterior tibialis tendon transfer only (minor recurrence) at Institution 1 (nine of 131, 7%) compared with Institution 2 (11 of 91, 13%). At Institution 1, an increase in the number of revision casts (multiple vs no casts, hazard ratio [HR] = 3.9; 95% CI, 2.0–7.6; p < 0.001) and an increase in the number of cast-related complications (multiple vs no complications, HR = 2.8; 95% CI, 1.2–6.7; p = 0.019) were associated with increased risk of major surgery in the multivariate analysis.ConclusionsRigid commitment to the Ponseti method in the conservative treatment of patients with isolated clubfoot was associated with a lower risk of subsequent unplanned surgical intervention. In addition, clubfoot treatment programs that use a care model that prioritizes continuity in care and dedication to the Ponseti method may decrease the proportion of patients who undergo unplanned surgical intervention.Level of EvidenceLevel III, therapeutic study.

Incidence of meniscal injury and chondral pathology in anterior tibial spine fractures of children.

Background: Pediatric avulsion fractures of the anterior tibial spine are injuries similar to anterior cruciate ligament injuries in adults. Sparse data exists on the association between anterior tibial spine fractures (ATSFs) and injury to the meniscus or cartilage of the knee joint in children. This research presents a retrospective review of clinical records, imaging, and operative reports to characterize the incidence of concomitant injury in cases of ATSFs in children. The purpose of this study was to better delineate the incidence of associated injuries in fractures of the anterior tibial spine in the pediatric population. Methods: We identified 58 patients who sustained an ATSF and met inclusion criteria for this study between 1996 and 2011. The subjects were separated by the Myers and McKeever classification into type I, II, and III fractures, and each of these were subclassified by associated injury pattern. Results: 59% of children with an ATSF had an associated soft tissue or other bony injury diagnosed by magnetic resonance imaging or arthroscopy. The most prevalent associated injuries were meniscal entrapment, meniscal tears, and chondral injury. We found no meniscal or chondral injury associated with type I fractures. Twenty-nine percent of type II injuries demonstrated meniscal entrapment, 33% showing meniscal tears. Seven percent demonstrated chondral injury. Forty-eight percent of type III fractures had entrapment, whereas 12% showed meniscal tears. Eight percent had a chondral injury. Conclusions: A majority (59%) of displaced ATSF had either concomitant meniscal, ligamentous, or chondral injury. This finding suggests that magnetic resonance imaging evaluation is an important aspect of the evaluation of these injuries, particularly in type II and type III patterns. To date, this study reports the largest number of patients to evaluate the specific question of concomitant injuries in ATSFs in the pediatric population. Level of Evidence: Level IV.

Incidence of Deep Vein Thrombosis and Pulmonary Embolism in the Elective Pediatric Orthopaedic Patient.

Background: Although venous thromboembolism (VTE) has been well studied in the pediatric trauma population, rates of VTE associated with elective pediatric orthopaedic procedures have not been addressed in current literature. The purpose of this retrospective study was to identify the incidence of VTE in the elective pediatric orthopaedic surgical population and delineate subsets of this population at greatest risk. This study may provide valuable data to begin the process of resolving the controversy surrounding deep vein thrombosis prophylaxis in the pediatric orthopaedic population. Methods: The Pediatric Health Information System was queried for patients admitted on an ambulatory or inpatient basis, aged below 18 years, from January 2006 to March 2011 during which an elective orthopaedic surgery was the principal procedure performed. Patients with diagnoses or procedures related to infection, trauma, malignancy, or coagulopathies were excluded. Patients admitted through the emergency department or whose orthopaedic procedure was not performed on the admission date were excluded. Age, sex, ethnicity, race, admission year, and all procedures/diagnoses were recorded. The presence of VTE at the index admission or any subsequent readmission within 90 days was recorded. All criteria were coded using ICD-9-CM codes. Generalized logistic regression analyses were used to identify factors related to VTE. Results: A total of 143,808 admissions (117,676 patients) matched the inclusion criteria. Thirty-three had a VTE during the index admission with an additional 41 at subsequent readmissions, for a total incidence of 0.0515% by admission and 0.0629% by patient. In the multivariable model, variables significantly (P<0.05) related to VTE included increasing age, admission type, diagnosis of metabolic conditions, obesity, and/or syndromes, and complications of implanted devices and/or surgical procedures. No procedure variables were significantly related to VTE in the multivariable model. Conclusions: The incidence of VTE in this cohort of pediatric patients undergoing elective orthopaedic surgery was 0.0515%. In children, underlying diagnosis seems to be a stronger predictor of VTE than procedures performed. Diagnosis with a metabolic condition, syndrome, and/or obesity, complications of implanted devices and/or surgical procedures, older age, and admission as an inpatient were significantly related to the development of a VTE. Level of Evidence: Level II—retrospective prognostic study.

Hip Dysplasia Is More Severe in Charcot-Marie-Tooth Disease Than in Developmental Dysplasia of the Hip

BackgroundPatients with Charcot-Marie-Tooth disease may develop hip dysplasia. Hip geometry in these patients has not been well described in the literature.Questions/purposesWe compared the hip morphometry in Charcot-Marie-Tooth hip dysplasia (CMTHD) and developmental dysplasia of the hip (DDH) in terms of extent of (1) acetabular dysplasia and subluxation, (2) acetabular anteversion and osseous support, (3) coxa valga and femoral version, and (4) osteoarthritis.MethodsFourteen patients with CMTHD (19 hips; mean age, 23 years) presenting for periacetabular osteotomy were matched to 45 patients with DDH (45 hips; mean age, 21 years) based on age, sex, and BMI. We assessed acetabular dysplasia and subluxation using lateral center-edge angle (LCEA), anterior center-edge angle (ACEA), and acetabular roof angle of Tönnis (TA) on plain pelvic radiographs and acetabular volume, area of femoral head covered by acetabulum, and percentage of femoral head covered by acetabulum on three-dimensional CT reconstruction models. Acetabular version and bony support, femoral version, and neck-shaft angle were measured on two-dimensional axial CT scans. Hip osteoarthritis was graded radiographically according to Tönnis criteria.ResultsAcetabular dysplasia was more severe in CMTHD, as measured by smaller LCEA (p < 0.001), ACEA (p < 0.001), and acetabular volume (p = 0.0178) and larger TA (p = 0.025). Hip subluxation was more pronounced in CMTHD, as demonstrated by lower area of femoral head covered by acetabulum (p = 0.034) and percentage of femoral head covered by acetabulum (p = 0.007). CMTHD was associated with higher acetabular anteversion (p < 0.001), lower anterior (p < 0.001) and posterior (p = 0.072) osseous support, and more severe coxa valga (p < 0.001). More (p = 0.006) arthritic hips were found in CMTHD.ConclusionsThe extent of acetabular dysplasia, hip subluxation, acetabular anteversion, coxa valga, and hip osteoarthritis was more severe in CMTHD. These findings are important in choosing the appropriate surgical strategy for patients affected by CMTHD.Level of EvidenceLevel IV, diagnostic study. See Instructions for Authors for a complete description of levels of evidence.

Implications of Parental Influence on Child/Adolescent Helmet Use in Snow Sports

Objective:The main objective of this study was to assess the influencing factors in participants who do not use a helmet while skiing or snowboarding in the youth population. Design:Cross-sectional survey. Setting:The 2006-2007 and 2007-2008 ski seasons at the Crested Butte Mountain Resort. Participants:Children and adolescents between the ages of 6 to 17 years and their parents were enrolled in the study. Two hundred six children/adolescents participated. Independent Variables:Independent variables included age, gender, parental helmet use, ski/snowboard helmet past protection, and child/adolescent reason for wearing/not wearing helmet. Main Outcome Measures:Dependent variables included child/adolescent helmet use. Results:Fifty-one percent were male and 49% were female. One hundred seventy-one (83%) reported that they wear a ski/snowboard helmet, and 35 (17%) reported that they did not wear a ski/snowboard helmet. There was a significant relationship between parental helmet use and child helmet use (P ⩽ 0.0001). Of the 171 children/adolescents who reported wearing a helmet, 124 (72.5%) reported that wearing a helmet protected them in an accident. Of the 171 children/adolescents who reported wearing a helmet, 87.7% said that safety was the reason for wearing a helmet. The most common reason for not wearing a ski/snowboard helmet was comfort. Conclusions:Parents helmet-wearing behavior was strongly associated with the child/adolescents helmet-wearing behavior. The results demonstrate the overwhelming influence parental helmet use has on their child/adolescents decision to wear a helmet.