Publications by authors named "Kevin Orellana"

Background: The purpose of this study was to develop and validate a classification system that describes the injury pattern of pediatric medial humeral condyle fractures and provide treatment guidelines.

Methods: Patients less than 18 years old with medial humeral condyle fractures from 2012 to 2022 were identified. A classification system was developed based on fracture pattern and putative mechanism of injury.

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Background: Patellofemoral osteochondral fractures (OCFs) have the potential to hinder patients' function and quality of life. Several fragment fixation techniques have been described, with both metallic screw and bioabsorbable fixation showing favorable functional outcomes. Despite the promising results associated with both fixation methods, no study has directly compared their functional outcomes.

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Background: The published reports examining socioeconomic factors and their relationship to osteosarcoma presentation and treatment suggest an association between lower socioeconomic status and a worse response to chemotherapy and lower survivorship. However, the driving factors behind these disparities are unclear. The Child Opportunity Index was developed by diversitydatakids.

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Article Synopsis
  • The study investigates the impact of social determinants of health (SDOH) on functional outcomes after anterior cruciate ligament (ACL) reconstruction, utilizing the Child Opportunity Index (COI) to assess disparities.
  • It hypothesizes that patients in lower COI scoring areas experience delays in surgical care and worse post-surgery recovery outcomes.
  • Results show that patients from lower COI groups had longer wait times for surgery, lower range of motion and strength, and attended fewer physical therapy sessions compared to those in higher COI groups.
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Background: Patellofemoral instability (PFI) is a common problem with various anatomic risk factors identified, including patella alta as one of the most powerful predictors. Given that the medial patellofemoral ligament (MPFL) is the primary soft tissue stabilizer of the patella, a common procedure to treat recurrent patellar instability is MPFL reconstruction. The aim of this study is to examine the relationship between MPFL reconstruction and patellar height.

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  • Recent studies indicate that the synovial fluid neutrophil-to-lymphocyte ratio (SF-NLR) may be a better diagnostic tool for pyogenic septic arthritis (SA) in adults than traditional methods like synovial fluid white blood cell count (SF-WBC) or percentages of polymorphonuclear leukocytes.*
  • A research project examined medical records from a children's hospital to see if SF-NLR and blood neutrophil-to-lymphocyte ratio (B-NLR) could serve as reliable diagnostic indicators for septic arthritis in children, using a conventional composite test (CCT) for evaluation.*
  • Out of 394 patients analyzed, the study found no significant difference in SF-NLR or B-NLR when comparing culture
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Introduction: One of the most popular containment procedures for Legg-Calvé-Perthes disease (LCPD) is proximal femur varus osteotomy (PFO). While generally successful in achieving containment, PFO can cause limb length discrepancy, abductor weakness, and (of most concern for families) a persistent limp. While many studies have focused on radiographic outcomes following containment surgery, none have analyzed predictors of this persistent limp.

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Introduction: This study examined the efficacy of manual therapy for pain and disability measures in adults with sacroiliac joint pain syndrome (SIJPS).

Methods: We searched six databases, including gray literature, on 24 October 2023, for randomized controlled trials (RCTs) examining sacroiliac joint (SIJ) manual therapy outcomes via pain or disability in adults with SIJPS. We evaluated quality via the Physiotherapy Evidence Database scale and certainty via Grading of Recommendations, Assessment, Development, and Evaluation (GRADE).

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Background: Though the importance of level 1 pediatric trauma has repeatedly been shown to lessen both morbidity and mortality in critically injured children, these same tertiary referral centers also receive numerous transfers of patients with less severe injuries. This not only leads to increased costs and use of limited facility resources but, oftentimes, frustration and unnecessary expense to those families for whom transfer was avoidable. Prior work has demonstrated that half of all inappropriate pediatric interfacility transfers are due to orthopedic injuries.

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Purpose: Adolescent idiopathic scoliosis (AIS) is a common pediatric spinal deformity frequently treated with patient scoliosis-specific exercises (PSSE). The purpose of this study is to perform a systematic review and meta-analysis of randomized controlled trials and sensitivity analysis of observational studies to determine the impact of PSSE on outcomes for AIS.

Methods: A systematic review and meta-analysis on impact of PSSE for patients with AIS was performed.

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Introduction: Social determinants of health have been shown to influence the health and outcomes of pediatric patients. Adolescent idiopathic scoliosis (AIS) may be particularly sensitive to such factors as early diagnosis and treatment can obviate the need for surgical intervention. The purpose of this study was to analyze the effect that social determinants of health have on the severity of AIS at presentation and at the time of surgery.

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Background: A decrease in sport-related injuries was observed in 2020, which has been attributed to COVID-19 and recommendations to suspend organized sports. In adult populations, increased injury rates have been noted in athletes returning to play after an extended period of reduced play, attributable to deconditioning. There is growing literature surrounding concern over increased injury risk after return to sport after the COVID-19 shutdowns.

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Objectives: Potential harms of stationary bike injuries in pediatric patients have been highlighted in the literature, but prior work is limited to case series and without population-level analysis. The purpose of this study is to examine the epidemiology of pediatric stationary bike injuries occurring in the US over the last decade using a national database.

Methods: Injuries resulting from stationary bike use in pediatric patients from 2012 to 2021 were identified using coding from the National Electronic Injury Surveillance System (NEISS) database.

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Neck pain is a common musculoskeletal condition frequently managed with numerous conservative interventions. The McKenzie method of mechanical diagnosis and therapy (MMDT) is a form of physical therapy evaluation and treatment that aims to improve pain and disability in patients with musculoskeletal pain, including neck pain. To date, no systematic review with meta-analysis has examined the use of the McKenzie MMDT for neck pain.

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Article Synopsis
  • Tibial spine fractures (TSFs) are rare but can lead to serious issues in children, with no universally accepted treatment method established.
  • A systematic review analyzed 47 studies involving 1922 pediatric TSFs, concluding that both open and arthroscopic surgeries were commonly used, with a slight preference for arthroscopic techniques.
  • The findings indicated nonunion rates in certain fracture types, higher risk of range of motion loss in severe fractures, and secondary ACL injuries more prevalent in less severe cases.
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Purpose: Given that pediatric traumatic hip dislocations are relatively rare, the purpose of the current study is twofold: first, to contribute a significant cohort to the existing corpus, and second, to provide evidence toward the role that computed tomography and magnetic resonance imaging could play in identification and management of this type of injury.

Methods: A retrospective review was conducted of all patients with traumatic hip dislocation who presented from 2012 to 2022 at a tertiary-level pediatric trauma center. Data regarding demographics, mechanism of injury, imaging, and treatment were tabulated.

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Background: As youth participation in contact and overhead sports has increased in recent decades, so has the occurrence of injuries of the shoulder. Rotator cuff injury (RCI) is an infrequent shoulder pathology in pediatric patients and its description in the literature has been scarce. A greater understanding of RCI characteristics and treatment outcomes in children and adolescents would improve our understanding of this pathology and help to better guide clinical decision-making.

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  • The review aims to improve the understanding of radiographic assessments for diagnosing patellofemoral instability in pediatric patients, helping in accurate risk assessment and surgical planning.
  • Recent studies have expanded knowledge on the anatomical factors contributing to pediatric patellar instability, utilizing knee MRI for skeletal maturity assessment and introducing new alignment measurements to identify at-risk patients.
  • Advancements in measuring trochlear dysplasia and assessing skeletal age via MRI may reduce reliance on traditional hand bone age assessments, highlighting potential improvements in surgical decision-making processes.
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Rotator cuff injuries (RCIs), traditionally thought to be an adult-type pathology, have been reported in the pediatric population, but there remains limited evidence regarding this injury pattern in pediatric patients. The purpose of this study was to systematically review the literature to characterize the epidemiology, injury patterns, treatment modalities, and outcomes for pediatric patients with RCIs. A systematic review was performed in accordance with Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines, reviewing Pubmed, Embase, Cochrane, and CINAHL databases.

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