Publications by authors named "Matthew F Halsey"

10 Publications

  • Page 1 of 1

Intraoperative neuromonitoring practice patterns in spinal deformity surgery: a global survey of the Scoliosis Research Society.

Spine Deform 2021 Mar 23;9(2):315-325. Epub 2020 Nov 23.

Department of Orthopedics and Traumatology, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey.

Purpose: Although multimodal IONM has reached a widespread use, several unresolved issues have remained in clinical practice. The aim was to determine differences in approaches to form a basis for taking actions to improve patient safety globally.

Methods: A survey comprising 19 questions in four sections (demographics, setup, routine practices and reaction to alerts) was distributed to the membership of the SRS.

Results: Of the estimated 1300 members, 205 (~ 15%) completed the survey. Respondent demographics reflected SRS member distribution. Most of the respondents had > 10 years of experience. TcMEP and SSEP were available to > 95%. Less than 5% reported that a MD/PhD with neurophysiology background routinely examines patients preoperatively, while 19% would consult if requested. After an uneventful case, 36% reported that they would decrease sedation and check motor function if the patient was to be transferred to ICU intubated. Reactions to dropped signals that recovered or did not fully recover varied between attempting the same correction to aborting the surgery with no rods and returning another day, with or without implant removal. After a decrease of signals, 85.7% use steroids of varied doses. Of the respondents, 53.7% reported using the consensus-created checklist by Vitale et al. Approximately, 14% reported never using the wake-up test while others use it for various conditions.

Conclusion: The responses of 205 experienced SRS members from different regions of the world showed that surgeons had different approaches in their routine IONM practices and in the handling of alerts. This survey indicates the need for additional studies to identify best practices.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
March 2021

Adolescents with spondylolysis have lower SRS-22 scores than controls and peers with pre-operative idiopathic scoliosis.

Spine Deform 2021 Jan 17;9(1):135-140. Epub 2020 Sep 17.

Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Mail Code OP31, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA.

Purpose: The Scoliosis Research Society Outcomes Questionnaire (SRS-22) is a health-related quality-of-life (HRQL) tool for scoliosis patients. Since no equivalent questionnaire exists for spondylolysis patients, we characterized patient-reported scores in pediatric spondylolysis patients using the SRS-22, and compared these scores to previously published values for age-matched controls and patients with pre-operative adolescent idiopathic scoliosis (AIS).

Methods: A single-institution cross-sectional observational study was performed using SRS-22 data from spondylolysis patients aged 12-18 years. Mean SRS-22 domain scores were compared to the existing literature values for adolescent control and AIS cohorts via unpaired Student t tests (α = 0.05) and against minimal clinically important differences (MCIDs).

Results: Thirty-five patients met inclusion criteria. Mean (± SD) spondylolysis patients' scores met the MCID across all domains except Mental Health (α= 0.05). Spondylolysis patient scores for Pain, Function, and Self-Image were significantly lower (p < 0.01) than AIS patients (Pain; 2.99 ± 0.66 vs 4.14 ± 0.79; Function; 3.81 ± 0.61 vs 4.09 ± 0.54; Self-Image; 3.45 ± 0.70 vs 3.80 ± 0.68).

Conclusion: The adolescent spondylolysis population has clinically significantly lower SRS-22 scores compared to age-matched controls and AIS patients, suggesting that the SRS-22 questionnaire should be given to this population to assess patients' HRQL. Further research is needed to assess the utility of the SRS-22 in measuring treatment effects.

Level Of Evidence: III.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
January 2021

Neurophysiological monitoring of spinal cord function during spinal deformity surgery: 2020 SRS neuromonitoring information statement.

Spine Deform 2020 08 25;8(4):591-596. Epub 2020 May 25.

Radboud University Medical Center, Postbus 9101, 6500 HB, Nijmegen, The Netherlands.

The Scoliosis Research Society has developed an updated information statement on intraoperative neurophysiological monitoring of spinal cord function during spinal deformity surgery. The statement reviews the risks of spinal cord compromise associated with spinal deformity surgery; the statement then discusses the various modalities that are available to monitor the spinal cord, including somatosensory-evoked potentials, motor-evoked potentials, and electromyographic (EMG) options. Anesthesia considerations, the importance of a thoughtful team approach to successful monitoring, and the utility of checklists are also discussed. Finally, the statement expresses the opinion that utilization of intraoperative neurophysiological spinal cord monitoring in spinal deformity surgery is the standard of care when the spinal cord is at risk.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
August 2020

Multimodal pain control in adolescent posterior spinal fusion patients: a double-blind, randomized controlled trial to validate the effect of gabapentin on postoperative pain control, opioid use, and patient satisfaction.

Spine Deform 2020 04 5;8(2):177-185. Epub 2020 Feb 5.

Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, OP31, Portland, OR, 97239-3098, USA.

Study Design: Prospective double-blind, randomized controlled trial.

Objectives: The objective of this study was to validate the efficacy of gabapentin as part of a multimodal pain regimen in a double-blind, randomized controlled trial for patients aged 10-19 years with idiopathic scoliosis undergoing posterior spinal fusion. Perioperative pain management represents a challenge for patients undergoing surgical correction of adolescent spinal deformity. Gabapentin has been shown to decrease postoperative pain and opioid use after spine surgery, but it has not yet been investigated as part of a multimodal pain regimen intended to decrease the perioperative use of opioids.

Methods: Fifty patients were randomized to receive gabapentin or placebo pre- and postoperatively in addition to a standardized medication regime including scheduled ketorolac and as-needed acetaminophen, hydromorphone, and oxycodone. Patients were monitored in the pre-, peri-, and postoperative periods for pain levels, medication dosing, side effects, adverse events, hospitalization length of stay, and parent satisfaction.

Results: There were statistically significant decreases in early postoperative pain scores and opioid use as well as total postoperative opioid use for the treatment group relative to controls. There were no statistically significant differences in adverse events, medication side effects, or hospitalization length. Parents of patients in both groups were very satisfied with the pain control provided to their children.

Conclusions: This randomized controlled trial demonstrates that pre- and postoperative administration of gabapentin as part of a multimodal pain management protocol significantly decreases both opioid use and visual analog pain scales in the first two postoperative days after posterior spinal fusion for adolescent idiopathic scoliosis. Gabapentin should be considered as a standard medication for perioperative pain control in this patient population.

Level Of Evidence: Level I.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
April 2020

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.

Spine Deform 2019 11;7(6):890-898.e4

3851 Katella Avenue, Suite 255, Los Alamitos, CA 90720, USA.

Study Design: Prognostic study and validation using prospective clinical trial data.

Objective: To derive and validate a model predicting curve progression to ≥45° before skeletal maturity in untreated patients with adolescent idiopathic scoliosis (AIS).

Summary Of Background Data: Studies have linked the natural history of AIS with characteristics such as sex, skeletal maturity, curve magnitude, and pattern. The Simplified Skeletal Maturity Scoring System may be of particular prognostic utility for the study of curve progression. The reliability of the system has been addressed; however, its value as a prognostic marker for the outcomes of AIS has not. The BrAIST trial followed a sample of untreated AIS patients from enrollment to skeletal maturity, providing a rare source of prospective data for prognostic modeling.

Methods: The development sample included 115 untreated BrAIST participants. Logistic regression was used to predict curve progression to ≥45° (or surgery) before skeletal maturity. Predictors included the Cobb angle, age, sex, curve type, triradiate cartilage, and skeletal maturity stage (SMS). Internal and external validity was evaluated using jackknifed samples of the BrAIST data set and an independent cohort (n = 152). Indices of discrimination and calibration were estimated. A risk classification was created and the accuracy evaluated via the positive (PPV) and negative predictive values (NPV).

Results: The final model included the SMS, Cobb angle, and curve type. The model demonstrated strong discrimination (c-statistics 0.89-0.91) and calibration in all data sets. The classification system resulted in PPVs of 0.71-0.72 and NPVs of 0.85-0.93.

Conclusions: This study provides the first rigorously validated model predicting a short-term outcome of untreated AIS. The resultant estimates can serve two important functions: 1) setting benchmarks for comparative effectiveness studies and 2) most importantly, providing clinicians and families with individual risk estimates to guide treatment decisions.

Level Of Evidence: Level 1, prognostic.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
November 2019

Utility of Follow-up Radiographs After Pin Removal in Supracondylar Humerus Fractures: A Retrospective Cohort Study.

J Am Acad Orthop Surg 2020 Jan;28(2):e71-e76

From the Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR.

Introduction: Displaced supracondylar humerus fractures (SCFs) are common pediatric injuries, typically treated by closed reduction and percutaneous pinning (CRPP). Radiographs are obtained at pin removal and subsequently to evaluate fracture healing. We evaluated the utility of radiographs obtained after pin removal in pediatric SCF management.

Methods: A retrospective cohort study of children aged 2 to 11 years with SCF requiring CRPP at a single institution from January 2007 to July 2017 was conducted. Radiographs were taken at pin removal and minimum 3 weeks later. Demographic and treatment data were collected via chart review. Radiographic measures were Baumann and lateral humeral-capitellar angles, anterior humeral line alignment, and number of cortices with callus. The McNemar-Bowker test analyzed anterior humeral line alignment and cortices with callus. The paired t-test analyzed Baumann and lateral humeral-capitellar angles.

Results: One hundred patients were included (47 males and 53 females, mean 5.7 years). The mean time to pin removal was 23.8 days, and the median clinical and radiographic follow-up periods were 109.0 and 52.2 days, respectively. Fracture patterns were extension type II (21%), III (73%), IV (1%), flexion (4%), and varus (1%). No patients' fracture management changed in the acute or long-term postoperative period because of findings on post-pin removal (PPR) radiographs. Fewer cortices with callus were seen at pin removal versus PPR (<0.001). At pin removal, no differences were found in the Baumann angle (75.8 ± 5.0 versus 74.6 ± 5.9; P = 0.053), lateral humeral-capitellar angles (30.7 ± 12.5 versus 31.6 ± 1.3; P = 0.165), or anterior humeral line alignment (P = 0.261).

Discussion: No patients' fracture management was modified because of findings evident on PPR radiographs. The number of cortices with callus was the only radiographic measure to differ over time, as is anticipated with routine healing. Elbow radiographic alignment measures did not differ in the interval between radiographs. Therefore, PPR radiographs may not provide clinical utility in the absence of other clinical findings.

Level Of Evidence: Level III, retrospective comparative study.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
January 2020

Paediatric pulled elbow injury: more common and recurrent than you think.

Matthew F Halsey

Acta Paediatr 2018 11 9;107(11):1850. Epub 2018 Aug 9.

Oregon Health and Science University - Orthopedics, Portland, Oregon, USA.

View Article and Find Full Text PDF

Download full-text PDF

Source Listing
November 2018

Emergency department on-call status for pediatric orthopaedics: a survey of the POSNA membership.

J Pediatr Orthop 2015 Mar;35(2):199-202

*Department of Orthopaedics, Yale University School of Medicine, New Haven, CT ‡Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR §Milwaukee Children's Hospital, Milwaukee, WI †MS of OrthoNorCal Orthopedic Specialists, San Jose ∥Children's Hospital of Orange County, Orange, CA ¶Texas Children's Hospital, Houston, TX #Cincinnati Children's Hospital, Cincinnati, OH.

Background: The emergency room on-call status of pediatric orthopaedic surgeons is an important factor affecting their practices and lifestyles and was last evaluated in 2006.

Methods: The entire membership of the Pediatric Orthopaedic Society of North America (POSNA) was surveyed in 2010 for information regarding their emergency room on-call status with 382 surveys returned of over 1000 e-mailed to members of POSNA. Detailed information about on-call coverage, support, and frequency was obtained in answers to 14 different questions.

Results: Compared with the prior survey in 2006, the 2010 survey indicated that a higher percentage of pediatric orthopaedic surgeons receive compensation for taking emergency room call; a higher percentage cover pediatric patients only when on-call; and accessibility to operating rooms in a timely manner for trauma cases, although limited, has improved for pediatric patients. Utilization of support staff to meet on-call trauma coverage demands, such as residents, physician's assistants, and nurse practitioners, is becoming more common.

Conclusions: Concentration of pediatric orthopaedic trauma has increased the coverage demands on pediatric orthopaedists. This has resulted in a change in reimbursement strategies, and allocation of OR time and hospital staffing resources.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
March 2015

Patient satisfaction surveys: an evaluation of POSNA members' knowledge and experience.

J Pediatr Orthop 2015 Jan;35(1):104-7

*Department of Orthopedic Surgery and Rehabilitation, Oregon Health & Science University, Portland, OR †SUNY Upstate Medical University, Syracuse, NY ‡Alfred I. DuPont Hospital for Children, Wilmington, DE.

Background: Patient satisfaction surveys (PSS) were originally designed to identify areas in need of improvement in patient interactions for individuals, practices, and institutions. As a result of the Affordable Care Act, the Centers for Medicare and Medicaid Services incorporated PSS into a formula designed to determine the quality of medical care delivered to hospital inpatients; the resultant score and rank will determine subsequent hospital payments. This survey was developed to evaluate POSNA members' knowledge of and experience with PSS.

Methods: The POSNA Practice Management Committee developed a 14-question survey that was sent to all active and candidate members (850). A total of 229 members responded; and results were tabulated by answer and simple percentages were calculated for each question. Comments were reviewed and grouped by similarity to identify frequency.

Results: A total of 82% of respondents were aware of PSS with 67% stating they were utilized in their setting. Utilization of PSS rarely alters clinical decision making. However, PSS do affect decisions regarding the patient experience; and 45% of respondents believe that PSS have utility with respect to business decisions. Fifty-nine percent of respondents feel that scores can be predictably improved. Less than half the respondents stated that they had a good or excellent understanding of PSS and only 48% believe that PSS are a valid measure of health care quality.

Conclusions: POSNA members' knowledge of and experience with PSS are not universal or uniform. Although most agree that patient satisfaction does not drive clinical decision making, it does appear to impact business and clinic-flow decisions with the idea that it can be predictably improved. Despite this, members' self-assessed that knowledge is average and it is not clear to the members that patient satisfaction reflects medical quality. On the basis of these findings and as the impacts of PSS become more prominent, efforts to educate the members of POSNA about PSS should be enhanced. Furthermore, research to identify and develop best practices that enhance patient satisfaction and well-being while minimizing costs should be supported.

Level Of Evidence: Level IV.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
January 2015

High-grade spondylolisthesis treated using a modified Bohlman technique: results among multiple surgeons.

J Neurosurg Spine 2014 May 21;20(5):523-30. Epub 2014 Feb 21.

Orthopaedic Surgery, Oregon Health & Science University, Portland;

Object: The ideal surgical management of high-grade spondylolisthesis remains unclear. Concerns regarding the original Bohlman transsacral interbody fusion technique with stand-alone autologous fibular strut include late graft fracture and incomplete reduction of lumbosacral kyphosis. The authors' goal was to evaluate the radiographic and surgical outcomes of patients treated for high-grade spondylolisthesis with either transsacral S-1 screws or standard pedicle screw fixation augmenting the Bohlman posterior transsacral interbody fusion technique.

Methods: A retrospective review of patients who underwent fusion for high-grade spondylolisthesis in which a Bohlman oblique posterior interbody fusion augmented with either transsacral or standard pedicle screw fixation was performed by 4 spine surgeons was completed. Estimated blood loss, operating time, perioperative complications, and need for revision surgery were evaluated. Upright pre- and postsurgical lumbar spine radiographs were compared for slip percent and slip angle.

Results: Sixteen patients (12 female and 4 male) with an average age of 29 years (range 9-66 years) were evaluated. The average clinical follow-up was 78 months (range 5-137 months) and the average radiographic follow-up was 48 months (range 5-108 months). Ten L4-S1 and 6 L5-S1 fusions were performed. Five fibular struts and 11 titanium mesh cages were used for interbody fusion. Six patients had isolated transsacral screws placed, with 2 (33%) of the 6 requiring revision surgery for nonunion. No nonunions were observed in patients undergoing spanning pedicle screw fixation augmenting the interbody graft. Six patients experienced perioperative complications including 3 iliac crest site infections, 1 L-5 radiculopathy without motor involvement, 1 deep vein thrombosis, and 1 epidural hematoma requiring irrigation and debridement. The average estimated blood loss and operating times were 763 ml and 360 minutes, respectively. Slip percent improved from an average of 62% to 37% (n = 16; p < 0.01) and slip angle improved from an average of 18° to 8° (n = 16; p < 0.01). No patient experienced L-5 or other motor deficit postoperatively.

Conclusions: The modified Bohlman technique for treatment of high-grade spondylolisthesis has reproducible outcomes among multiple surgeons and results in significant improvements in slip percent and slip angle. Fusion rates were high (14 of 16; 88%), especially with spanning instrumentation augmenting the oblique interbody fusion. Rates of L-5 motor deficit were low in comparison with techniques involving reduction of the anterolisthesis.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
May 2014