Publications by authors named "Heegaard M"
Article Synopsis
- This study is a retrospective cohort analysis that investigates the link between Hounsfield units (HUs) measured on CT scans and mechanical failure in patients with adult spinal deformity (ASD) undergoing surgery.
- The research included 170 ASD patients, revealing a 27% rate of mechanical failure after two years, but showed no significant correlation between HUs and the occurrence of mechanical failure.
- The findings suggest that using HUs from preoperative CT scans is not a reliable method for predicting mechanical failure in ASD surgery patients.
Study Design: Retrospective multicenter cohort study.
Objective: To investigate the impact of night-time bracing (NTB) and full-time bracing (FTB) on the sagittal profile in adolescent idiopathic scoliosis (AIS) patients.
Summary Of Background Data: Recent studies have shown that FTB in AIS patients may induce hypokyphosis.
Purpose: The purpose of the study was to assess the changes in flexibility during night-time bracing in skeletally immature adolescent idiopathic scoliosis (AIS) with curves in the surgical range.
Materials And Methods: We included a consecutive cohort of 89 AIS patients with curves ≥ 45° and an estimated growth potential. All patients were eventually treated with fusion surgery, and all patients had side-bending radiographs prior to both bracing and surgery.
Purpose: Adolescent idiopathic scoliosis (AIS) is characterized by coronal scoliosis and often a sagittal hypokyphosis. The effect of bracing on the sagittal profile is not well understood. The aim of this study is to assess the effect of night-time bracing on the sagittal profile in patients with AIS.
View Article and Find Full Text PDFBackground And Purpose: The efficacy of bracing larger curves in adolescent idiopathic scoliosis (AIS) patients is uncertain. We aimed to assess the influence of night-time bracing in AIS patients with main curves exceeding 40° Cobb angle at brace initiation.
Methods: We reviewed AIS patients treated with nighttime braces between 2005 and 2018.
Introduction: Following surgical treatment for adult spinal deformity (ASD) there is an increased risk of revision surgery due to mechanical failure or pseudarthrosis. Demineralized cortical fibers (DCF) were introduced at our institution aiming to reduce the risk of pseudarthrosis after ASD surgery.
Research Question: We wanted to investigate the effect of DCF on postoperative pseudarthrosis compared with allogenic bone graft in ASD surgery without three-column osteotomies (3CO).
Purpose: Risser stage is widely used as a marker for skeletal maturity (SM) and thereby an indirect measure for the risk of progression of adolescent idiopathic scoliosis (AIS). The Scoliosis Research Society recommends bracing for Risser stages 0-2 as Risser stage 3 or above is considered low risk. Very few studies have assessed the risk of progression during bracing in Risser stages 3-4.
View Article and Find Full Text PDFAim: To determine the rate of postoperative complications following surgery for Scheuermann?s kyphosis (SK) and ascertain whether restoration to an ideal Roussouly spine type reduced the incidence of postoperative proximal junctional kyphosis (PJK).
Material And Methods: We retrospectively screened all patients undergoing SK surgery at our institution (2010?2017) and excluded patients with less than two years of follow-up. Postoperative complications were identified as early or late and minor or major.
Objective: The demand for spinal fusion is increasing, with concurrent reports of iatrogenic adult spinal deformity (flatback deformity) possibly due to inappropriate lordosis distribution. This distribution is assessed using the lordosis distribution index (LDI) which describes the upper and lower arc lordosis ratio. Maldistributed LDI has been associated to adjacent segment disease following interbody fusion, although correlation to later-stage deformity is yet to be assessed.
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