Full Text Journal Articles by
Author M Timothy Hresko

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Preoperative hematocrit and platelet count are associated with blood loss during spinal fusion for children with neuromuscular scoliosis.

Margaret O Lewen, Jay Berry, Connor Johnson, Rachael Grace, Laurie Glader, Charis Crofton, Izabela Leahy, Nikhil Pallikonda, Anna Litvinova, Steven J Staffa, Michael Glotzbecker, John Emans, M Timothy Hresko, Mary Ellen, Michael Troy, Sara J Singer, Lynne Ferrari,

<h4>Aim</h4>To assess the relationship of preoperative hematology laboratory results with intraoperative estimated blood loss and transfusion volumes during posterior spinal fusion for pediatric neuromuscular scoliosis.<h4>Methods</h4>Retrospective chart review of 179 children with neuromuscular scoliosis undergoing spinal fusion at a tertiary children's hospital between 2012 and 2017. The main outcome measure was ... Read more >>

J Perioper Pract (Journal of perioperative practice)
[2021, :1750458920962634]

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Vitamin D levels and pain outcomes in adolescent idiopathic scoliosis patients undergoing spine fusion.

Alexandra Beling, M Timothy Hresko, Leah DeWitt, Patricia E Miller, Sarah A Pitts, John B Emans, Daniel J Hedequist, Michael P Glotzbecker,

<h4>Purpose</h4>Prior research has indicated adolescent idiopathic scoliosis (AIS) patients have lower bone mineral density and lower vitamin D levels than healthy peers. Vitamin D deficiency has been associated with higher levels of pain. This study investigated whether vitamin D-deficient AIS patients had higher pain before or immediately after posterior spine ... Read more >>

Spine Deform (Spine deformity)
[2021, 9(4):997-1004]

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Incidence of Proximal Junctional Kyphosis With Pedicle Screws at Upper Instrumented Vertebrae in Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis.

Yoji Ogura, Steven D Glassman, Daniel Sucato, M Timothy Hresko, Leah Y Carreon,

<h4>Study design</h4>Longitudinal cohort.<h4>Objectives</h4>Posterior spinal fusion (PSF) using all-pedicle screw constructs has become the standard procedure in the treatment of adolescent idiopathic scoliosis (AIS). However, there have been several reports that all-pedicle screw constructs or the use of pedicle screws at the upper instrumented vertebrae (UIV) increases the incidence of proximal ... Read more >>

Global Spine J (Global spine journal)
[2020, :2192568220935107]

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The growth-friendly surgical treatment of scoliosis in children with osteogenesis imperfecta using distraction-based instrumentation.

Lawrence I Karlin, Anna McClung, Charles E Johnston, Amer Samdani, M Timothy Hresko, Francisco Javier Perez-Grueso, Michael Troy, ,

<h4>Purpose</h4>The study was undertaken to determine the feasibility of growth-friendly distraction-based surgery in children with OI.<h4>Methods</h4>Two multi-center databases were queried for children with OI who had undergone GR or VEPTR surgery. Inclusion criteria were a minimum 2-year follow-up and three lengthening procedures following the initial implantation. Details of the surgical ... Read more >>

Spine Deform (Spine deformity)
[2021, 9(1):263-274]

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Sprengel's deformity: an analysis of surgically and nonsurgically treated patients.

Carley Vuillermin, Kemble K Wang, Kathryn A Williams, M Timothy Hresko, Peter M Waters,

<h4>Background</h4>Sprengel's deformity is a congenital anomaly of the scapula and can be associated with reduced shoulder mobility and esthetic concerns. Controversies remain regarding its natural history, radiographic findings, and optimal treatment strategy.<h4>Methods</h4>A total of 74 Sprengel's shoulders in 71 patients presenting to a pediatric referral hospital were retrospectively reviewed including ... Read more >>

J Shoulder Elbow Surg (Journal of shoulder and elbow surgery)
[2021, 30(1):e1-e9]

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Diagnosing and treating native spinal and pelvic osteomyelitis in adolescents.

Lara L Cohen, Benjamin J Shore, Kathryn A Williams, Daniel J Hedequist, M Timothy Hresko, John B Emans, Lawrence I Karlin, Brian D Snyder, Michael P Glotzbecker,

STUDY DESIGN:Retrospective case series. OBJECTIVES:To describe how pediatric patients with spinal and pelvic osteomyelitis are diagnosed and treated and assess the diagnostic value of magnetic resonance imaging (MRI), needle aspiration biopsy (NAB), and blood cultures in this population. Spinal and pelvic osteomyelitis de novo are uncommon in children and minimal ... Read more >>

Spine Deform (Spine deformity)
[2020, 8(5):1001-1008]

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Does bracing for adolescent idiopathic scoliosis affect operative results?

Grant Hogue, Leah DeWitt, Alexandra Grzywna, M Timothy Hresko, Daniel Hedequist, Lawrence Karlin, John Emans, Hai Le, Patricia Miller, Michael Glotzbecker,

STUDY DESIGN:Retrospective comparative study. OBJECTIVES:We hypothesize that preoperative bracing for idiopathic scoliosis results in increased stiffness, as measured by reduced correction on bending films, ultimately leading to decreased surgical correction. Bracing is the primary nonoperative treatment for immature AIS patients with mild to moderate curves. For patients who fail bracing ... Read more >>

Spine Deform (Spine deformity)
[2020, 8(3):427-432]

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Developmental sacral morphology: MR study from infancy to skeletal maturity.

Andrew M Hresko, Emily M Hinchcliff, David G Deckey, M Timothy Hresko,

<h4>Purpose</h4>The primary aim of this study was to document the growth and spatial relationship of the sacrum in relationship to the lumbar spine and the ilium during childhood and adolescence.<h4>Methods</h4>MRIs of 420 asymptomatic subjects (50% female) with age range 0-19 years at the time of their MRI (mean ± SD 8.5 ± 5.5 years) were used ... Read more >>

Eur Spine J (European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society)
[2020, 29(5):1141-1146]

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Comparative Sacral Morphology in Spondylolisthesis Patients.

M Timothy Hresko, David G Deckey, Emily Hinchcliff, Leslie A Kalish,

<h4>Study design</h4>Retrospective comparative case series.<h4>Objectives</h4>Evaluation of sacral morphology in spondylolisthesis patients compared with asymptomatic controls.<h4>Summary of background data</h4>Patients with spondylolisthesis are known to differ from asymptomatic controls in sagittal plane anatomy, but few studies examine the coronal and axial plane differences in these cohorts.<h4>Methods</h4>This is a retrospective evaluation of magnetic ... Read more >>

Spine Deform (Spine deformity)
[2019, 7(6):945-949]

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Bracing in Adolescent Idiopathic Scoliosis Trial (BrAIST): Development and Validation of a Prognostic Model in Untreated Adolescent Idiopathic Scoliosis Using the Simplified Skeletal Maturity System.

Lori A Dolan, Stuart L Weinstein, Mark F Abel, Patrick P Bosch, Matthew B Dobbs, Tyler O Farber, Matthew F Halsey, M Timothy Hresko, Walter F Krengel, Charles T Mehlman, James O Sanders, Richard M Schwend, Suken A Shah, Kushagra Verma,

<h4>Study design</h4>Prognostic study and validation using prospective clinical trial data.<h4>Objective</h4>To derive and validate a model predicting curve progression to ≥45° before skeletal maturity in untreated patients with adolescent idiopathic scoliosis (AIS).<h4>Summary of background data</h4>Studies have linked the natural history of AIS with characteristics such as sex, skeletal maturity, curve magnitude, ... Read more >>

Spine Deform (Spine deformity)
[2019, 7(6):890-898.e4]

Cited: 4 times

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Criteria for surgical reduction in high-grade lumbosacral spondylolisthesis based on quality of life measures.

Jean-Marc Mac-Thiong, M Timothy Hresko, Abdulmajeed Alzakri, Stefan Parent, Dan J Sucato, Lawrence G Lenke, Michelle Marks, Hubert Labelle,

PURPOSE:Although surgical reduction in high-grade lumbosacral spondylolisthesis is often performed in young patients, criteria for defining adequate reduction leading to optimal outcomes have yet to be defined. The purpose of this study is to determine if surgical reduction in pelvic balance, slip grade, lumbosacral angle and L5 incidence are associated ... Read more >>

Eur Spine J (European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society)
[2019, 28(9):2060-2069]

Cited: 1 time

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Surgical Treatment of Developmental Spondylolisthesis: Contemporary Series With a Two-Surgeon Team.

David G Deckey, Leslie A Kalish, Daniel Hedequist, John Emans, Mark Proctor, Michael Glotzbecker, Lawrence Karlin, Brian Snyder, M Timothy Hresko,

<h4>Study design</h4>Retrospective case series.<h4>Objectives</h4>To report operative outcomes of contemporary surgical treatment of spondylolisthesis in the pediatric population.<h4>Summary of background data</h4>Surgical treatment of developmental spondylolisthesis is controversial, with limited data on complication and reoperation rates.<h4>Methods</h4>A retrospective study followed pediatric patients with either L5-S1 high-grade spondylolisthesis (HGS) or L5-S1 symptomatic low-grade spondylolisthesis ... Read more >>

Spine Deform (Spine deformity)
[2019, 7(2):275-285]

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What Are the Indications for Spinal Fusion Surgery in Scheuermann Kyphosis?

David W Polly, Charles G T Ledonio, Beverly Diamond, Hubert Labelle, Daniel J Sucato, M Timothy Hresko, John B Emans, Michael G Vitale, Mark A Erickson, A Noelle Larson, ,

<h4>Background</h4>Surgical indications for Scheuermann kyphosis are variable. We sought to evaluate the characteristics of patients undergoing operative versus nonoperative treatment of Scheuermann kyphosis to better understand current practices and the factors which contribute to the decision for surgical management.<h4>Methods</h4>Multicenter prospective cohort study. We evaluated consecutive patients presenting with Scheuermann kyphosis. ... Read more >>

J Pediatr Orthop (Journal of pediatric orthopedics)
[2019, 39(5):217-221]

Cited: 2 times

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Implementing a Multidisciplinary Clinical Pathway Can Reduce the Deep Surgical Site Infection Rate After Posterior Spinal Fusion in High-Risk Patients.

Michael Glotzbecker, Michael Troy, Patricia Miller, Jay Berry, Lara Cohen, Alexandra Gryzwna, Mary Ellen McCann, M Timothy Hresko, Susan Goobie, John Emans, Robert Brustowitz, Brian Snyder, Daniel Hedequist,

<h4>Design</h4>Retrospective comparative study.<h4>Objective</h4>The purpose of this study is to measure SSI outcomes before and after implementation of our center's multidisciplinary clinical pathway protocol for high-risk spinal surgery.<h4>Background</h4>Surgical site infections (SSIs) after spinal fusion harm patients and are associated with significant health care costs. Given the high rate of SSI in ... Read more >>

Spine Deform (Spine deformity)
[2019, 7(1):33-39]

Cited: 2 times

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Tranexamic Acid Is Efficacious at Decreasing the Rate of Blood Loss in Adolescent Scoliosis Surgery: A Randomized Placebo-Controlled Trial.

Susan M Goobie, David Zurakowski, Michael P Glotzbecker, Mary E McCann, Daniel Hedequist, Robert M Brustowicz, Navil F Sethna, Lawerence I Karlin, John B Emans, M Timothy Hresko,

<h4>Background</h4>Tranexamic acid (TXA) is an antifibrinolytic drug that reduces surgical blood loss. Evidence supporting its efficacy in surgery for adolescent idiopathic scoliosis is not robust. This trial was designed to validate the clinical efficacy of TXA in surgery for adolescent idiopathic scoliosis.<h4>Methods</h4>This institutional review board-approved prospective double-blinded trial involved 111 ... Read more >>

J Bone Joint Surg Am (The Journal of bone and joint surgery. American volume)
[2018, 100(23):2024-2032]

Cited: 10 times

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Acute Exertional Compartment Syndrome in Young Athletes: A Descriptive Case Series and Review of the Literature.

Kristin S Livingston, William P Meehan, M Timothy Hresko, Travis H Matheney, Benjamin J Shore,

<h4>Objectives</h4>Acute exertional compartment syndrome (AECS) is a rare presentation of acute compartment syndrome (ACS) after exertion without injury. Unfamiliarity with this entity can lead to delay in diagnosis. The purpose of this study was to increase awareness of AECS and illustrate the morbidities associated with delayed diagnosis.<h4>Methods</h4>With institutional review board ... Read more >>

Pediatr Emerg Care (Pediatric emergency care)
[2018, 34(2):76-80]

Cited: 1 time

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Early Detection of Scoliosis-What the USPSTF "I" Means for Us.

M Timothy Hresko, Richard M Schwend, Richard A Hostin,

JAMA Pediatr (JAMA pediatrics)
[2018, 172(3):216-217]

Cited: 2 times

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Staged Growing Rods With Preimplantation of Spinal Anchors for Complex Early Onset Scoliosis.

Jaime A Gomez, Alexandra Grzywna, Regina Hanstein, John B Emans, M Timothy Hresko, Daniel Hedequist, Lawrence I Karlin, Michael P Glotzbecker,

<h4>Background</h4>Treatment of early onset scoliosis (EOS) with growing rods (GR) can be challenging in patients with significant deformity, hyperkyphosis, or poor bone quality, due to risks of neurological deficit and hardware pull-out. The objective of this study is to report a series of EOS patients managed with a 2-stage GR ... Read more >>

J Pediatr Orthop (Journal of pediatric orthopedics)
[2017, 37(8):e606-e611]

Cited: 2 times

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Predicting Postsurgical Satisfaction in Adolescents With Idiopathic Scoliosis: The Role of Presurgical Functioning and Expectations.

Christine B Sieberg, Juliana Manganella, Gem Manalo, Laura E Simons, M Timothy Hresko,

<h4>Background</h4>There is a need to better assess patient satisfaction and surgical outcomes. The purpose of the current study is to identify how preoperative expectations can impact postsurgical satisfaction among youth with adolescent idiopathic scoliosis undergoing spinal fusion surgery.<h4>Methods</h4>The present study includes patients with adolescent idiopathic scoliosis undergoing spinal fusion surgery ... Read more >>

J Pediatr Orthop (Journal of pediatric orthopedics)
[2017, 37(8):e548-e551]

Cited: 0 times

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Deep Surgical Site Infections Following Pediatric Cervical Spine Surgery.

David A Porter, Michael P Glotzbecker, M Timothy Hresko, Daniel J Hedequist,

<h4>Of background data</h4>This is the first reported series looking specifically at factors associated with deep surgical site infections (SSI) following pediatric cervical spine surgery.<h4>Objective</h4>To identify risk factors present in pediatric patients who are at risk for SSI following cervical spine surgery.<h4>Design</h4>Level of evidence: level IV-retrospective case series.<h4>Introduction</h4>To date there are ... Read more >>

J Pediatr Orthop (Journal of pediatric orthopedics)
[2017, 37(8):553-556]

Cited: 2 times

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Benign Natural History of Spondylolysis in Adolescence With Midterm Follow-Up.

Ted Sousa, David L Skaggs, Priscella Chan, Kent T Yamaguchi, Jerald Borgella, Christopher Lee, Jeffrey Sawyer, Alice Moisan, John M Flynn, Melissa Gunderson, M Timothy Hresko, Pierre D'Hemecourt, Lindsay M Andras,

<h4>Study design</h4>Retrospective chart review.<h4>Objectives</h4>To use the Micheli Functional Scale to assess adolescent patients with spondylolysis treated conservatively at midterm follow-up.<h4>Summary of background</h4>Spondylolysis is a common source of back pain for adolescents and is generally managed with bracing and physical therapy. There is little data regarding the results of conservative management ... Read more >>

Spine Deform (Spine deformity)
[2017, 5(2):134-138]

Cited: 1 time

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Nonsurgical Management of Adolescent Idiopathic Scoliosis.

Jaime A Gomez, M Timothy Hresko, Michael P Glotzbecker,

Pediatric patient visits for spinal deformity are common. Most of these visits are for nonsurgical management of scoliosis, with approximately 600,000 visits for adolescent idiopathic scoliosis (AIS) annually. Appropriate management of scoliotic curves that do not meet surgical indication parameters is essential. Renewed enthusiasm for nonsurgical management of AIS (eg, ... Read more >>

J Am Acad Orthop Surg (The Journal of the American Academy of Orthopaedic Surgeons)
[2016, 24(8):555-564]

Cited: 4 times

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Early Detection of Idiopathic Scoliosis in Adolescents.

M Timothy Hresko, Vishwas Talwalkar, Richard Schwend, ,

J Bone Joint Surg Am (The Journal of bone and joint surgery. American volume)
[2016, 98(16):e67]

Cited: 10 times

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Spinal deformity progression after posterior segmental instrumentation and fusion for idiopathic scoliosis.

Vidyadhar V Upasani, Daniel J Hedequist, M Timothy Hresko, Lawrence I Karlin, John B Emans, Michael P Glotzbecker,

<h4>Study design</h4>Retrospective chart and radiographic review.<h4>Purpose</h4>To assess the incidence of and variables associated with spinal deformity progression after posterior segmental instrumentation and fusion at a single institution. Progression of the scoliotic deformity after posterior instrumented spinal fusion has been described. Recent studies have concluded that segmental pedicle screw constructs are ... Read more >>

J Child Orthop (Journal of children's orthopaedics)
[2015, 9(1):29-37]

Cited: 6 times

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Abnormal rib count in scoliosis surgery: impact on the reporting of spinal fusion levels.

Hillard T Spencer, Meryl E Gold, M Timothy Hresko,

<h4>Purpose</h4>Variation in rib numbering has been noted in adolescent idiopathic scoliosis (AIS), but its effect on the reporting of fusion levels has not been studied. We hypothesized that vertebral numbering variations can lead to differing documentation of fusion levels.<h4>Methods</h4>We examined the radiographs of 161 surgical AIS patients and 179 control ... Read more >>

J Child Orthop (Journal of children's orthopaedics)
[2014, 8(6):497-503]

Cited: 3 times

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