Publications by authors named "Timothy A Garvey"
Article Synopsis
- The study aimed to examine the relationship between patients' preoperative expectations of pain relief and their functional outcomes and satisfaction after anterior cervical surgery, focusing on data collected from surgeries performed between 2016-2021.
- Researchers analyzed data from 198 ACDF and 52 CDR patients, finding no significant links between expected pain relief and improvement in functional scores or satisfaction after 12 months; however, higher preoperative dissatisfaction was correlated with better postoperative improvement.
- The results suggest that while patients’ preoperative expectations may not directly influence their outcomes, those who start off less satisfied may experience greater functional improvements following surgery.
Introduction: Controversy exists regarding whether spinal implants need to be removed to treat postoperative deep wound infections (DWIs). This retrospective study aimed to determine whether the removal or retention of implants impacts the successful treatment of a DWI after spine surgery.
Methods: Postoperative spine surgery patients presenting with signs of infection who underwent irrigation and debridement (I&D) at Twin Cities Spine Surgeons at Abbott Northwestern Hospital, Minnesota, USA, were studied.
Purpose: This natural history study reports long-term radiographic and clinical outcomes of patients with diagnosis of AIS with curves between 30° and 50°. Our purpose was to determine if any intervention in the natural history is warranted.
Methods: This was a longitudinal descriptive study at a single institution.
Background: Anterior cervical discectomy and fusion (ACDF) and cervical disc arthroplasty (CDA) are attractive targets for transition to the outpatient setting. We assessed the prevalence of rapid responses and major complications in the inpatient setting following 1 or 2-level ACDFs and CDAs. We evaluated factors that may place patients at greater risk for a rapid response or a postoperative complication.
View Article and Find Full Text PDFBackground: Polyetheretherketone (PEEK) and machined allograft interbody spacers are among devices used as fusion adjuncts in anterior cervical discectomy and fusion (ACDF). Most results are good to excellent but some patients develop pseudarthrosis. We compared the reoperation rates for pseudarthrosis following 1- or 2-level ACDF with PEEK or allograft cages.
View Article and Find Full Text PDFStudy Design: This is a retrospective cohort study.
Objective: To compare posterolateral versus transforaminal interbody fusion (PLF vs. PLF+TLIF) of the L4/5 segment regarding rates of subsequent surgery, clinical and radiographic parameters, and patient satisfaction.
Study Design: Retrospective cohort study.
Objectives: We hypothesized that spine surgery patients with a history of bariatric surgery do not differ in expectations of surgery, perceived benefit of surgical intervention, or physician determined outcome of surgery from patients with no history of bariatric surgery.
Methods: Patients seen in our spine clinic between January 1, 2 009 and December 30, 2 010 were reviewed.
Background: Anterior interbody fusion has previously been demonstrated to increase neuroforaminal height in a cadaveric model using cages. No prior study has prospectively assessed the relative change in magnetic resonance imaging (MRI) demonstrated neuroforaminal dimensions at the index and supradjacent levels, after anterior interbody fusion with a corticocancellous allograft in a series of patients without posterior decompression. The objective of this study was to determine how much foraminal dimension can be increased with indirect foraminal decompression alone via anterior interbody fusion, and to determine the effect of anterior lumbar interbody fusion on the dimensions of the supradjacent neuroforamina.
View Article and Find Full Text PDFBackground Context: Several conservative therapies have been shown to be beneficial in the treatment of chronic low back pain (CLBP), including different forms of exercise and spinal manipulative therapy (SMT). The efficacy of less time-consuming and less costly self-care interventions, for example, home exercise, remains inconclusive in CLBP populations.
Purpose: The purpose of this study was to assess the relative efficacy of supervised exercise, spinal manipulation, and home exercise for the treatment of CLBP.
Study Design: Retrospective clinical cohort study.
Objective: To determine the efficacy of posterior lateral mass screw/rod fixation and fusion for the treatment of symptomatic pseudarthrosis of anterior cervical fusion.
Summary Of Background Data: Both anterior revision and posterior repair of cervical pseudarthrosis have been reported.
Study Design: This study prospectively evaluated the health related quality of life (HRQOL) of 73 adults presenting with scoliosis at a single institution, as related to their spinal (C7 plumbline) and global (gravity line) balance.
Objective: To assess the influence of sagittal and coronal balance on HRQOL in adult scoliosis.
Summary Of Background Data: Many surgeons believe that achieving adequate spinal balance is important in the management of adult spinal deformity, but the evidence supporting this concept remains limited.
Study Design: Retrospective comparative study of 2 approaches to multilevel fusion for cervical spondylosis in consecutive patients at a single institution.
Objective: To provide justification for a concomitant posterior approach in multilevel cervical fusion for spondylosis by demonstrating decreased pseudarthrosis and reoperation rates.
Summary Of Background Data: Among the factors that affect cervical rates is the number of levels, such that increasing the number of levels leads to lower fusion rates.
Background: To date, there have been no published studies of the degenerative changes in the cervical spine in adult idiopathic scoliosis patients with thoracic and lumbar curves severe enough to require major reconstructive surgery.
Materials And Methods: The primary study group was 48 adult patients who had previously undergone a fusion from T10 or higher to the sacrum as an adult for idiopathic scoliosis. These were compared to 38 adults with unfused idiopathic scoliosis of 30 degrees -50 degrees and to 42 symptomatic adults presenting with cervical pain.
Background: The lack of a widely available scoring system for cervical degenerative spondylosis encouraged the authors to establish and validate a systematic quantitative radiographic index.
Materials And Methods: This study included intraobserver and interobserver reliability testing among three reviewers with different years of experience. Each observer independently scored four cervical radiographs of 48 patients at separate intervals, and statistical analysis of the grading was performed.
Study Design: This is a retrospective review of 129 consecutive anterior lumbar revision surgeries in 108 patients. It is a single-center, multi-surgeon study.
Objective: To determine occurrence rates and risk factors for perioperative complications in revision anterior lumbar fusion surgery.
Study Design: A study documenting major complications encountered in revision procedures for lumbar cage pseudoarthrosis.
Objective: To document the perioperative complications associated with revision surgery for threaded cylindrical cage pseudoarthrosis.
Summary Of Background Data: Pseudoarthrosis after cylindrical cage placement manifests as persistent or recurrent pain and disability after surgery.
Study Design: A retrospective study of complications with minimal 5-year follow-up of 50 adults with scoliosis with fusion from T10 or higher to S1.
Objectives: To document the perioperative and long-term complications and instrumentation problems, and to attempt to determine variables which may influence these problems. It is not a study of curve correction, balance, or functional outcome.
Study Design: Prospective clinical series with comparison to retrospectively collected data.
Objective: To compare direct measures of postoperative hematoma volume against a new measure of hematoma effect on the thecal sac: the critical ratio.
Summary Of Background Data: Asymptomatic epidural hematoma is common after lumbar surgery.
Study Design: Prospective clinical series.
Objective: To determine the incidence, volume, and extent of postoperative epidural hematoma resulting in thecal sac compression, and to identify risk factors correlated with measured hematoma volumes.
Summary Of Background Data: Risk factors for postoperative hematoma development have been retrospectively determined in small populations of symptomatic patients.
Objective: The objective of this study is to evaluate the effectiveness of a specific methodology for plain radiographic assessment of lumbar pedicle screw position.
Purpose: To evaluate the effectiveness of using orthogonal plain radiographs and a systematic method of interpretation, developed by the senior author, in assessing the placement of lumbar and lumbosacral pedicle screws.
Study Design: This was an adult cadaver study of the accuracy of using plain radiographs or computed tomography to assess pedicle screw position.
Study Design: An extensive outcome questionnaire using a visual analog scale, the North American Spine Society Satisfaction Questionnaire, a Modified Roland and Morris disability index, and a modified Oswestry Disability Index was used to assess the outcome of anterior cervical discectomy and fusion for those with neck pain.
Objective: To document the clinical outcome for 87 patients who underwent anterior cervical discectomy and fusion for the primary indication of neck pain, as assessed after an average follow-up period of 4.4 years.