Publications by authors named "Mathew D Sewell"

Background: Debate exists as to whether anterior-posterior spinal fusion (APSF), rather than posterior-only spinal fusion (PSF), provides benefit for treating severe thoracic adolescent idiopathic scoliosis (AIS). This systematic review and meta-analysis compare (1) Cobb angle correction, (2) complication and reoperation rate, (3) pulmonary function, (4) number of fused segments, and 5) patient-reported outcome measures (PROMs) in both groups.

Methods: Electronic databases were searched to identify studies that met the following inclusion criteria: comparative studies (level 3 or above), severe thoracic curves (≥ 70°), age ≤ 16, AIS aetiology, Lenke 1-4 curves and follow-up ≥ 1 year for ≥ 95% of patient population.

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Purpose: Spinal multidisciplinary teams (MDTs) are now standard of care for complex patient management in tertiary spinal units. This study investigates whether a scheduling proforma, and cultural change to the team that promotes psychological safety, can improve spinal MDT effectiveness for team members and patients.

Methods: Retrospective cohort study including 165 spinal MDT patients before and after intervention.

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Objective: The American Association and Congress of Neurological Surgeons recommended mean arterial blood pressure (MAP) in patients with acute spinal cord injury (SCI) should be 85-90 mm Hg for the first 7 days. We evaluated whether hemodynamic management differed between a primary-receiving and tertiary hospital in the first 24 hours for patients with acute SCI and assessed whether use of a checklist could improve hemodynamic management.

Methods: Observational review was performed of 79 patients with acute SCI before and after introduction of a blood pressure monitoring checklist and staff educational program designed to improve tertiary center management.

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Background: The benefits of early surgical decompression and stabilisation (within 24 hours of injury) for patients with acute traumatic spinal cord injury (SCI) is unclear. The study objective was to investigate the effects of early (<24 hours of injury) versus late (>24 hours of injury) decompressive and stabilisation surgery for traumatic cervical SCI in patients with concomitant chest injuries.

Methods: This was a retrospective study including adults aged 16 years or over with traumatic cervical SCI, Glasgow Coma Scale score >13, and concomitant chest injuries (e.

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There is a lack of information and consensus regarding the optimal treatment for recurrent disc herniation previously treated by posterior discectomy, and no reports have described an anterior approach for recurrent disc herniation causing cauda equina syndrome (CES). Revision posterior decompression, irrespective of the presence of CES, has been reported to be associated with significantly higher rates of dural tears, hematomas, and iatrogenic nerve root damage. The authors describe treatment and outcomes in 3 consecutive cases of patients who underwent anterior lumbar discectomy and fusion (ALDF) for CES caused by recurrent disc herniations that had been previously treated with posterior discectomy.

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The Austrian-Swiss-German (ASG) Traveling Fellowship, which began in 1979, is an annual exchange of surgeons between the German-speaking countries of Austria, Switzerland, and Germany and the English-speaking countries of the United States, England, and Canada. In 2016, 4 fellows were chosen to participate in the fellowship, including Eric Edmonds from the University of California, San Diego; Simon Mears from the University of Arkansas for Medical Sciences; Mathew Sewell from the James Cook University in Middlesbrough, England; and Andrea Veljkovic from the University of British Columbia in Vancouver.

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Objective: To investigate whether growing rod surgery for children with progressive idiopathic early onset scoliosis (EOS) effects activity and participation, and investigate factors that may affect this.

Study Design: Multicenter retrospective cohort study using prospectively collected data on 60 children with idiopathic EOS and significant scoliosis (defined as a Cobb angle >40°). Thirty underwent brace treatment, and 30, growth rod surgery.

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Objectives: Extrathoracic solitary fibrous tumors (ESFTs) are rare low-to-intermediate grade spindle-cell neoplasms of pluripotent fibroblastic or myofibroblastic origin. This review explores prognostic factors in the management of ESFTs and provides guidance on optimal treatment regimens based on the current literature.

Patients And Methods: Electronic searches were performed using MEDLINE, Embase, and the Cochrane library to identify studies on prognostic factors in the management of ESFTs published between January 1970 and June 2016.

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Background: Congenital indifference to pain with anhidrosis (CIPA) is a rare hereditary neuropathy, which is associated with defective sensation to noxious stimuli and autonomic dysfunction. The objective of the study was to report on the orthopaedic manifestations of this condition and provide an evidence-based approach for management.

Methods: Retrospective review of 14 consecutive patients with CIPA referred to a single tertiary centre.

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Purpose Of The Study: Pacemakers are currently identified as a contraindication for the use of magnetic growth rods (MGRs). This arises from concern that magnetic fields generated by the MGR external remote controller (ERC) during lengthening procedures may induce pacemaker dysfunction. We investigated (1) whether MGR lengthening affects pacemaker function, and (2) if the magnetic field of a pacemaker affects MGR lengthening.

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Background And Objectives: Balloon kyphoplasty (BKP) is a percutaneous treatment for cancer-related vertebral compression fractures (VCF). Posterior vertebral body wall (PVBW) involvement is considered a contraindication for BKP. This study assesses whether BKP is safe and effective for cancer-related VCFs involving the PVBW.

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Unlabelled: Previous studies have suggested clavicular morphology is highly variable, particularly in the lateral retrocurved section. Current clavicle fracture plating systems require three dimensional intra-operative contouring to achieve adequate fit and necessitate variable soft tissue dissection placing fracture perfusion and muscular attachments at risk. The aim of this study was to search for a surgically relevant superficial shape pattern.

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Spinal fusion is used to treat scoliosis in children with cerebral palsy (CP). Following intervention, the WHO considers activity and participation should be assessed to guide intervention and assess the effects. This study assesses whether spinal fusion for scoliosis improves activity and participation for children with severe CP.

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Background Context: Skeletal involvement is observed in almost 80% of patients presenting with symptomatic multiple myeloma (MM). The vertebral column is the most frequently affected site by myeloma-induced osteoporosis, osteolysis, and compression fractures. Multiple pathologic compression fractures can lead to significant spinal deformity, which is often considered for complex reconstruction because of the poor quality of life for the affected patients.

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There is no consensus on the optimal method of local control in Ewing's sarcoma (ES) of the mobile spine. Recent reports have suggested that en bloc resection may improve local control and survival. The authors therefore performed a systematic review to answer the following questions: (1) What is the outcome of en bloc resection for ES of the mobile spine with respect to local control and disease-free survival (DFS)? (2) How should residual ES of the mobile spine be treated?Inclusion criteria were articles published between the years 1960 and 2014 in English that contained more than five patients.

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Objective: Surgical resection of sacral chordomas offers the best long-term prognosis but has high rates of local recurrence, metastases, and mortality. Most prognostic studies are limited by low patient numbers, variation in treatment, follow-up, and prognostic variables studied. The objective of this study was to identify factors associated with recurrence, metastasis, and survival.

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Background: Patients with obstetric brachial plexus palsy (OBPP) are prone to develop degenerative shoulder disease at a younger age than the general population. To date, no reports have been published on the complexities or outcome of shoulder arthroplasty (SA) in this unique patient group.

Methods: We reviewed of 9 SAs in 9 patients (3 men and 6 women) with OBPP with mean follow-up 5.

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Background: Scoliosis affects 50% of children with Gross Motor Function Classification System (GMFCS) level IV or V cerebral palsy (CP). In children with complex neurodisability following intervention, the WHO considers quality of life (QoL) should be assessed to aid decision-making and assess the effects. This study assesses whether scoliosis surgery improves carer-assessed QoL for children with severe CP.

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Objective: This study investigates outcome of scoliosis treatment for 11 children with Angelman syndrome (AS), with particular focus on activity, participation and the musculoskeletal factors that may affect these outcomes.

Methods: Retrospective review of medical records, radiographs and questionnaires administered to caregivers of 11 children (8M:3F) with AS and scoliosis. Six underwent observational treatment during childhood and five underwent spinal fusion.

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Background Context: Copenhagen syndrome, or progressive noninfectious anterior vertebral fusion, is a rare disorder of unknown etiology that usually presents with thoracolumbar kyphosis in childhood. There have been no long-term reports on outcome in children with multiple affected levels with longitudinal imaging from infancy to adulthood.

Purpose: The purpose of this study was to report the long-term outcome of nonoperative management of a child with Copenhagen syndrome affecting 19 vertebral levels.

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The skeletal dysplasias are a large, heterogeneous group of genetic disorders characterised by abnormal growth, development and remodelling of the bones and cartilage that comprise the human skeleton. They typically present with disproportionate short stature in childhood, or premature osteoarthritis in adulthood. The latest classification lists 456 disorders under 40 group headings differentiated by specific clinical, radiographic and molecular criteria.

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