A prospective, randomized, multicenter food and drug administration investigational device exemptions study of lumbar total disc replacement with the CHARITE™ …

S Blumenthal, PC McAfee, RD Guyer, SH Hochschuler… - 2005 - journals.lww.com
Study Design. A prospective, randomized, multicenter, Food and Drug Administration-regulated
Investigational Device Exemption clinical trial. Objectives. The purpose of this study was …

Intradiscal pressure measurements above an instrumented fusion: a cadaveric study

SL Weinhoffer, RD Guyer, M Herbert, SL Griffith - Spine, 1995 - journals.lww.com
Study Design. An in vitro study to determine the intradiscal pressure changes during flexion
in levels above a simulated fusion was performed. Objectives. To determine if intradiscal …

Dallas discogram description a new classification of CT/discography in low-back disorders

BL Sachs, H Vanharanta, MA Spivey, RD Guyer… - Spine, 1987 - journals.lww.com
A new classification method for CT/discography was developed. The Dallas discogram
description (DDD) related five separate categories of information. Degeneration and annular …

Prospective, randomized, multicenter Food and Drug Administration investigational device exemption study of lumbar total disc replacement with the CHARITE …

RD Guyer, PC McAfee, RJ Banco, FD Bitan… - The Spine Journal, 2009 - Elsevier
BACKGROUND CONTEXT: The CHARITÉ artificial disc, a lumbar spinal arthroplasty device,
was approved by the United States Food and Drug Administration in 2004 based on two-…

Prospective, randomized, multicenter study of cervical arthroplasty: 269 patients from the Kineflex C artificial disc investigational device exemption study with a …

D Coric, PD Nunley, RD Guyer, D Musante… - … of Neurosurgery: Spine, 2011 - thejns.org
Object Cervical total disc replacement (CTDR) represents a relatively novel procedure
intended to address some of the shortcomings associated with anterior cervical discectomy and …

A prospective, randomized, multicenter food and drug administration investigational device exemption study of lumbar total disc replacement with the CHARITÉ™ …

…, G Holsapple, K Adams, S Blumenthal, RD Guyer… - 2005 - journals.lww.com
Study Design. A prospective, randomized, multicenter, Food and Drug Administration-regulated,
investigational device exemption clinical trial. Objectives. To compare the safety and …

The use of presurgical psychological screening to predict the outcome of spine surgery

AR Block, DD Ohnmeiss, RD Guyer, RF Rashbaum… - The Spine Journal, 2001 - Elsevier
Background context: Several previous studies have shown that psychosocial factors can
influence the outcome of elective spine surgery. Purpose:The purpose of the current study was …

Intervertebral disc prostheses

RD Guyer, DD Ohnmeiss - Spine, 2003 - journals.lww.com
Study Design. This article is based on a comprehensive review of the literature related to
intervertebral disc prostheses. Objective. To compile an overview of the results and …

The relationship of facet tropism to degenerative disc disease

…, T Floyd, DD Ohnmeiss, SH Hochschuler, RD Guyer - Spine, 1993 - journals.lww.com
The role of facet tropism (asymmetry) in the pathogenesis of degenerative disc disease is
unknown, and several conflicting reports have been published. We studied this association …

Lumbar discography

RD Guyer, DD Ohnmeiss, A Vaccaro - The Spine Journal, 2003 - Elsevier
Study design: A comprehensive review of the literature dealing with lumbar discography
was conducted. Objective: The purpose of the review is to update the North American Spine …