Publications by authors named "Henry Ellis"
Background: There are limited evidence-based guidelines to predict which osteochondritis dissecans (OCD) lesions will heal with nonoperative treatment.
Purpose: To train a set of classification algorithms to predict nonoperative OCD healing while identifying new clinically meaningful predictors.
Study Design: Case-control study; Level of evidence, 3.
Aims: There has been limited literature regarding outcomes of acetabular rim syndrome (ARS) with persistent acetabular os in the setting of acetabular dysplasia. The purpose of this study was to characterize a cohort of adolescent and young adult patients with ARS with persistent os and compare their radiological and clinical outcomes to patients with acetabular dysplasia without an os.
Methods: We reviewed a prospective database of patients undergoing periacetabular osteotomy (PAO) for symptomatic acetabular dysplasia between January 1999 and December 2021 to identify hips with preoperative os acetabuli, defined as a closed triradiate cartilage but persistence of a superolateral os acetabulum.
Background: Osteochondritis dissecans (OCD) of the knee is a focal idiopathic alteration of subchondral bone and/or its precursor with risk for instability and disruption of adjacent cartilage. Treatment options focused on preventing premature osteoarthritis vary depending on multiple patient and lesion characteristics, including lesion mobility.
Purpose: To differentiate lesion mobility before arthroscopy using a multivariable model that includes patient demographic characteristics and physical examination findings.
Background: There may be an association between repetitive stress on the elbow and capitellar osteochondritis dissecans (COCD). The influence of activity on the characteristics or specific location of the lesion within a capitellar zone of propensity remains unclear.
Purpose/hypothesis: The purpose of this study was to evaluate COCD in gymnasts and baseball players compared with a non-upper extremity (non-UE) sport COCD cohort.
Background: It is unclear how levels of sport participation have changed among adolescents in the United States (US) in recent years, particularly considering evidence of increasing sport professionalization and attrition.
Purpose: To evaluate the differences and trends in single- and multiple-team sport participation among US high school students between 1999 and 2019.
Study Design: Descriptive epidemiology study.
Background: The Delphi technique is a structured, iterative group survey method utilized to reach a consensus among experts in a field regarding topics with evidence-based equipoise. Currently, there are few studies at the highest levels of evidence published on the perioperative tibial spine management, making it an ideal subject to utilize expert opinion to reach consensus decision.
Hypothesis/purpose: The purpose of this study was to utilize a Delphi-method survey to achieve consensus statements regarding the perioperative management of tibial spine fractures.
Objective: To investigate the relationship between Beighton score and biomechanical risk factors, such as knee valgus, in female, adolescent volleyball players.
Design: Cross-sectional study.
Setting: Biomechanics laboratory.
Given the psychological aspects of sports nutrition, understanding one's athletic identity (AI) may improve targeted nutrition education. Therefore, the purpose of this study was to examine nutrition habits and AI among uninjured youth athletes. Athletic Identity Measurement Scale (AIMS) and custom Sports Nutrition Assessment for Consultation (SNAC) scores collected prospectively at local sporting events were retrospectively assessed via Mann-Whitney, Kruskal-Wallis, logistic regression, and ANCOVA tests (95% CI).
View Article and Find Full Text PDFBackground: Given rising youth sport participation, 8 to 10-year-olds increasingly display comparable lower-extremity injury incidence to 11 to 17-year-olds and require effective return to sport criteria. One such criterion which quantifies dynamic stability is the Y-Balance Test (YBT), though it has not been validated in children under age 11.
Hypothesis/purpose: The purpose of this study was to examine the performance of 8 to 10-year-old patients on the YBT after lower-extremity injury and determine how these results compare to larger samples of age-grouped athletes within the validated 11 to 17-year-old range.
Systematic detection of risky nutrition behaviors after sports surgery may better promote healing for return-to-sport. The purpose of this study was to assess nutritional behavior differences between patients following anterior cruciate ligament reconstruction (ACLR) and following other lower-extremity orthopedic surgeries. One pediatric sports medicine center was reviewed for a custom Sports Nutrition Assessment for Consultation, which investigates nutrition-related risk factors for youth athletes at their first post-operative visit.
View Article and Find Full Text PDFBackground: A recent study has reported that the radiographic measurement of posterior tibial slope (PTS) is larger in male pediatric patients with tibial spine fractures (TSF) than in controls. However, they found no difference in PTS between female patients and controls.
Purpose: (1) To identify whether PTS is larger in female pediatric patients with TSF than in female controls and (2) to validate the relationship between PTS and pediatric TSF in male patients.
Article Synopsis
- The study aimed to understand the surgical anatomy of the meniscotibial ligament complex in children's knees, focusing on its relationship with the proximal tibial physis and the posterior joint capsule.
- Researchers dissected 14 pediatric knee specimens, ranging from 3 months to 11 years old, to observe the spatial relationships and marked key anatomical points for analysis.
- Results showed a clear separation between the knee capsule and the meniscal attachments, with distances between the meniscotibial ligament and the physis increasing as children aged, highlighting important anatomical considerations for surgical procedures.
Article Synopsis
- The study compares traditional CT acquisition planning methods using scout images to a new technique involving ultra-low dose helical CT (3D Landmark Scan) combined with artificial intelligence for automatic imaging.
- A retrospective analysis of 104 CT exams showed significant reductions in both scan length and radiation dose when using the 3D Landmark Scan method compared to traditional methods.
- Results indicated a median acquisition length reduction of 26.7 mm and a 23.3% decrease in total radiation dose, highlighting the effectiveness of the new approach in enhancing patient safety and efficiency.
This study investigated trends within a custom Sports Nutrition Assessment for Consultation (SNAC) survey designed to identify nutrition-related risk factors among post-operative lower-extremity youth athletes. Athletes aged 8-18 years who completed the SNAC at a sports medicine institution after lower-extremity surgery were reviewed for associations between SNAC questions and age/sex differences. Of 477 patients (15.
View Article and Find Full Text PDFObjectives: To compare the clinical, radiographic, and patient-reported outcomes of nonoperative and operative treatment of adolescents with comminuted "Z-type" midshaft clavicle fractures.
Design: Prospective observational cohort.
Setting: Eight tertiary care pediatric centers.
Article Synopsis
- - The study investigates subapophyseal avulsion and soft tissue injuries of the medial elbow in pediatric and adolescent patients to better inform treatment strategies.
- - Researchers reviewed records of 150 patients with soft tissue injuries treated between 2016 and 2021, focusing on ulnar collateral ligament issues and using radiographs and MRIs for diagnoses.
- - Out of the patients studied, 62 had bony avulsions visible on radiographs, while 88 exhibited injuries without clear radiographic evidence, indicating a significant occurrence of soft tissue injuries in this age group.
Article Synopsis
- Trochlear anatomy significantly impacts patellar stability, but its developmental changes in children are not well understood.
- The study analyzed 65 skeletally immature knees, using CT scans to measure various aspects of trochlear morphology, focusing on how these measurements change with age.
- Results showed that trochlear depth and condylar height increase until about age 8, after which they plateau, while asymmetry of the condyles shifts from larger medial to larger lateral.
Background: Shortening of midshaft clavicle fractures has been described as a critical fracture characteristic to guide treatment. The degree to which shortening may change in the initial weeks following injury has not been well studied. The purpose of this study was to evaluate the change in shortening of adolescent clavicle fractures in the first 2 weeks following injury.
View Article and Find Full Text PDFBackground: Optimal treatment of completely displaced midshaft clavicular fractures in adolescents remains controversial, with some favoring surgical management and others favoring a nonoperative approach. Few studies have comprehensively assessed longer-term nonoperative outcomes.
Purpose: To prospectively assess patient-reported outcomes (PROs) and radiographic remodeling ≥5 years after injury in teenagers undergoing nonoperative treatment of completely displaced clavicular fractures.
Background: Anterolateral ligament reconstruction (ALLR) or lateral extra-articular tenodesis (LET) is being used more frequently in conjunction with anterior cruciate ligament reconstruction (ACLR). However, the knee flexion angle at which fixation of ALLR or LET is performed during the procedure is quite variable based on existing technique descriptions.
Purpose/hypothesis: The purpose of this study was to identify whether flexion angle at the time of ALLR/LET fixation affected postoperative outcomes in a clinical population.
Background: Femoroacetabular impingement (FAI) is a condition where the femoral head-neck junction collides with the acetabulum. Open or arthroscopic treatment of FAI aims to increase hip motion while reducing impingement during passive or dynamic movements.
Research Question: What are the biomechanical characteristics of the hip and pelvis in adolescents and young adults diagnosed with FAI syndrome 1) pre-operatively compared to controls and 2) pre- to post-operatively?
Methods: 43 patients with FAI and 43 controls were included in the study.
Article Synopsis
- The study explores the importance of athletic identity in youth athletes recovering from anterior cruciate ligament reconstruction (ACLR) and how it relates to psychological readiness for return to sports.
- A retrospective review of 87 youth athletes was conducted, assessing factors like athletic identity (measured by AIMS) and coping skills over a year-long rehabilitation period.
- Findings revealed a general decline in athletic identity scores during rehabilitation, even as physical participation and coping abilities improved, suggesting the need to recognize psychological aspects when determining readiness for returning to sports.
Background: Recent evidence suggests that for completely displaced midshaft clavicular fractures, surgery offers no clear benefit over nonoperative treatment in a general adolescent population from 10 to 18 years of age. However, the comparative outcomes of comminuted and/or severely shortened clavicular fractures specifically in older adolescent athletes have not been explored in a focused, methodologically rigorous fashion.
Hypothesis: The study hypothesis was that outcomes would be superior in older adolescent athletes who underwent operative treatment compared with nonoperative treatment for comminuted and/or severely shortened clavicular fractures.
Background: Lower extremity valgus is a commonly described factor associated with patellofemoral instability (PFI) and, if identified before skeletal maturity, can be treated with guided growth. The prevalence of valgus alignment in the pediatric and adolescent PFI population is largely unknown.
Purpose: The aim of this study was to report the prevalence of valgus alignment in adolescent patients presenting with PFI; with secondary assessment of high-grade valgus (zone II or III), coronal asymmetry, and associations of these findings with body mass index (BMI).
Background: Surgical treatment for adolescent patients with femoroacetabular impingement (FAI) is increasing. The purpose of this study was to determine the clinical outcomes of FAI surgery in a multicenter cohort of adolescent patients and to identify predictors of suboptimal outcomes.
Methods: One hundred twenty-six adolescent hips (114 patients < 18 years of age) undergoing surgery for symptomatic FAI were studied from a larger multicenter cohort.