The five-item modified frailty index is predictive of 30-day postoperative complications in patients undergoing spine surgery

…, W Ahmad, L Passfall, O Krol, C Bortz, H Alas… - Spine, 2021 - journals.lww.com
Study Design. Retrospective cohort study. Objective. This study aimed to evaluate the utility
of the modified frailty index (mFI-5) in a population of patients undergoing spine surgery. …

A cost benefit analysis of increasing surgical technology in lumbar spine fusion

PG Passias, AE Brown, H Alas, CA Bortz, KE Pierce… - The Spine Journal, 2021 - Elsevier
BACKGROUND CONTEXT Numerous advances have been made in the field of spine fusion,
such as minimally invasive (MIS) or robotic-assisted spine surgery. However, it is unknown …

Does patient frailty status influence recovery following spinal fusion for adult spinal deformity?: an analysis of patients with 3-year follow-up

KE Pierce, PG Passias, H Alas, AE Brown, CA Bortz… - Spine, 2020 - journals.lww.com
Study Design. Retrospective review of a prospective database. Objective. The aim of this
study was to evaluate postop clinical recovery among adult spinal deformity (ASD) patients …

Radiographic and clinical outcomes of anterior and transforaminal lumbar interbody fusions: a systematic review and meta-analysis of comparative studies

RM Ajiboye, H Alas, GM Mosich, A Sharma… - Clinical Spine …, 2018 - journals.lww.com
Study Design: Systematic review and meta-analysis. Objective: Compare the radiographic
and clinical outcomes of anterior lumbar interbody fusion (ALIF) to transforaminal lumbar …

Predicting the occurrence of postoperative distal junctional kyphosis in cervical deformity patients

…, M Yagi, CA Bortz, FA Segreto, H Alas… - …, 2020 - journals.lww.com
… Passias, Peter G MD; Horn, Samantha R BA; Oh, Cheongeun PhD; Lafage, Renaud MS;
Lafage, Virginie PhD; Smith, Justin S MD; Line, Breton BS; Protopsaltis, Themistocles S MD; …

Sports-related cervical spine fracture and spinal cord injury: a review of nationwide pediatric trends

H Alas, KE Pierce, A Brown, C Bortz, S Naessig… - Spine, 2021 - journals.lww.com
Study Design. Retrospective cohort study. Objective. Assess trends in sports-related cervical
spine trauma using a pediatric inpatient database. Summary of Background Data. Injuries …

A simpler, modified frailty index weighted by complication occurrence correlates to pain and disability for adult spinal deformity patients

PG Passias, CA Bortz, KE Pierce, H Alas… - International Journal of …, 2020 - ijssurgery.com
Background: The Miller et al adult spinal deformity frailty index (ASD-FI) correlates with
complication risk; however, its development was not rooted in clinical outcomes, and the 40 …

A cost utility analysis of treating different adult spinal deformity frailty states

AE Brown, J Lebovic, H Alas, KE Pierce… - Journal of Clinical …, 2020 - Elsevier
The aim of this study was to investigate the cost utility of treating non-frail versus frail or
severely frail adult spinal deformity (ASD) patients. 79 surgical ASD patients >18 years with …

[HTML][HTML] Prioritization of realignment associated with superior clinical outcomes for cervical deformity patients

KE Pierce, PG Passias, AE Brown, CA Bortz, H Alas… - Neurospine, 2021 - ncbi.nlm.nih.gov
Methods Included: cervical deformity (CD) patients (C2–7 Cobb angle> 10, cervical lordosis>
10, cervical sagittal vertical axis [cSVA]> 4 cm, or chin-brow vertical angle> 25) with full …

[HTML][HTML] Klippel–Feil: A constellation of diagnoses, a contemporary presentation, and recent national trends

…, C Wang, KE Pierce, CA Bortz, H Alas… - … Junction and Spine, 2019 - journals.lww.com
Background: Klippel–Feil syndrome (KFS) includes craniocervical anomalies, low posterior
hairline, and brevicollis, with limited cervical range of motion; however, there remains no …