Medicine and Health Sciences Commons^™

Acute Post-Operative Pain Following Anterior Cruciate Ligament Reconstruction: A Comparison Of Patellar Tendon Vs Hamstring Autograft, Dustin J Randall, Denise Koueiter, Brandon Luczak, Kyle Anderson

Posters

INTRODUCTION
Choosing between a bone-patellar tendon-bone (BTB) or hamstring tendon (HS) graft for primary anterior cruciate ligament (ACL) reconstruction has long been a topic of debate and discrepancy in orthopaedic literature, with many factors contributing to the decision process. The purpose of this study is to analyze acute post-operative pain scores of patients who underwent ACL reconstruction and compare the results between BTB autograft and the HS autograft techniques.

Defining Functional Shoulder Range Of Motion In Middle-Aged To Elderly Populations To Guide Shoulder Surgical Treatment, Tyler Sargent, Justin Smith, Christie Smith, John Krauss, Michelle Jankowski, J Michael Wiater

Posters

INTRODUCTION
Functional range of motion (ROM) is defined as the minimal required mobility of a joint to complete activities of daily living (ADL). Defining functional ROM will allow surgeons to decide which aging patients would benefit from surgical intervention aimed at improving shoulder functionality.

Applying The Periprosthetic Joint Infection Consensus Definition To Ankle Implant-Associated And Infection-Suspected Procedures To Assess Diagnosis, Jackson Harley, Erin Baker, Corinn K. Gehrke, David Ciufo, Zachary M. Vaupel, Paul T. Fortin

Posters

INTRODUCTION
Periprosthetic joint infection (PJI) affects 2-3% of all total joint replacement cases. In 10-30% of these cases, the organism is unidentifiable, which may impact treatment planning and outcomes. In this study, suspected periprosthetic infections of foot and ankle procedures treated by four foot and ankle-trained orthopedic surgeons were retrospectively reviewed to determine culture status and applicability of the 2018 International Consensus Meeting on Orthopedic Infections (ICM) classification system.

Evaluating Taper Junction Fretting And Corrosion In Reverse Total Shoulder Arthroplasty, Ian R. Penvose, Erin A. Baker, J. Michael Wiater, Corinn K. Gehrke, Jonathan O Wright, Omar N. Khatib, Brett P Wiater

Posters

INTRODUCTION
Taper junction fretting and corrosion (F&C) has been identified in total hip arthroplasty (THA) as an implant failure mode. Studies have reported taper F&C in in anatomic total shoulder arthroplasty (ATSA) implants, but limited literature has described comparable analyses in reverse shoulder arthroplasty (RTSA) implants. In this study, taper junction F&C in retrieved RTSA implants was assessed and analyzed.

Lumbar Motion Is Maintained With Paraspinous Tension Band For Degenerative Spondylolisthesis: Results From 24-Month Fda Study, Kee D. Kim, Rick Sasso, Serena Hu, Alan Villavicencio, S Tim Yoon, William Lavelle, Harvinder Sandhu, Hyun Bae, Jeffrey Fischgrund, Mick Perez-Cruet

Conference Presentation Abstracts

Introduction

Durable outcome for degenerative spondylolisthesis (DS) usually requires decompression and fusion. Fusion, however, places greater stress at adjacent levels with increased incidence of adjacent segment disease. A novel interspinous tension band is proposed for segmental stabilization after decompression for DS, as an alternative to fusion. An FDA IDE study (NCT03115983) compares decompression and stabilization with the tension band (treatment group) to decompression and transforaminal interbody instrumented fusion (control group) for symptomatic DS.

Methods

Prospectively enrolled IDE study subjects with 24 months postoperative radiographic follow-up were included in this analysis. X-rays obtained during the follow-up period for both the treatment …

Causes Of Early Hip Revision Vary By Age And Sex: Analysis Of Data From A Statewide Quality Registry, Jacob F. Markel, John A. Driscoll, Richard Hughes, Jamers Verner, Thomas Zheng, Brian Halstrom, David C. Markel

Conference Presentation Abstracts

INTRODUCTION: While THA is extremely successful, early failures do occur. The purpose of this study was to determine the cause of revision in specific patient demographic groups at three timepoints to improve quality. The data should guide treatment regimens and implant choice. METHODS: Data for cases performed between 2012 and 2018 from a statewide, quality improvement arthroplasty registry was used. The database included 79,205 THA cases and 1,433 revisions with identified etiology (1,584 total). All revisions performed at < 5 years from the primary THA were reviewed. Six groups: men/women, <65, 65-75, and >75 years, were compared at revision timepoints <6 mo, <1 year, and <5 years. RESULTS: There were obvious and significant differences between subgroups based on demographics and timepoints (p<.0001). The most common etiologies within 1 year (961 revisions) were: fracture (324, 33.7%), dislocation (235, 24.5%) and infection (164, 17.0%). 756 (78%) of the 1-year revisions occurred within 6 months, the vast majority within 6 weeks. At this early timepoint, the most common revision cause was fracture for all groups and ages (316, 42%) ranging from 27.6% in young men to 60% in older women. Joint instability became the leading cause for revision after 6 months in younger women whereas for younger men infection became the primary issue. The most striking finding was the incidence of fracture as the leading cause of revision at all time points for both men and women >75 years. CONCLUSION: This quality project demonstrated clinically significant differences in the reason for THA …

Augmented Immunomodulation Of Endogenous Marrow-Derived Stem Cells In The Setting Of Acl Rupture, Mackenzie Fleischer, Michael Newton, Samantha Hartner, John A. Driscoll, Anthony Arveschoug, Chritopher C. Vasileff, Kevin Baker

Conference Presentation Abstracts

PURPOSE: Augmentation of MSC immunomodulation is an unexplored, potentially useful therapeutic to combat PTOA following ACLR. Lower kynurenine-to-tryptophan ratios observed in synovial fluid of ACL rupture (ACLR) rats suggests decreased activity of tryptophan metabolizing enzyme, Ido, known to be secreted by MSCs to promote T-reg expansion and Th17 suppression. This study aims to characterize the immunomodulatory capacity of pharmacologically mobilized MSCs in conjunction with exogenously delivered Ido. METHODS: Rats (N = 48) underwent ACLR to evaluate the effects of mobilized MCSs on Ido1 and inflammatory cytokine expression profiles in the synovial fluid. Additionally, rats (N = 160) underwent ACLR to …