Bryan Conrad

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CONTEXT The leg acts as a linear spring during running and hopping and adapts to the stiffness of the surface, maintaining constant total stiffness of the leg-surface system. Introducing a substance (eg, footwear) may affect the stiffness of the leg in response to changes in surface stiffness. OBJECTIVE To determine if the type of athletic footwear(More)
STUDY DESIGN Nonexperimental. OBJECTIVES To determine interrater and intrarater agreement for 2 methods of evaluating movement quality during 2 lower extremity functional tasks, and to descriptively compare levels of agreement between the 2 methods. BACKGROUND Clinicians typically use observational analysis to evaluate movement quality during functional(More)
One major concern regarding soft tissue allograft use in surgical procedures is the risk of disease transmission. Current techniques of tissue sterilization, such as irradiation have been shown to adversely affect the mechanical properties of soft tissues. Grafts processed using Biocleanse processing (a proprietary technique developed by Regeneration(More)
BACKGROUND Lumbar transforaminal epidural injections are commonly utilized to treat radicular pain due to intervertebral disc herniation. OBJECTIVE This study aims to determine if there was a major difference in effectiveness between particulate and nonparticulate corticosteroids for acute radicular pain due to lumbar disc herniation. DESIGN A(More)
OBJECTIVE In the process of anterior cervical fusion, little is known about the biomechanics of anterior cervical screw pullout. In this study, three different aspects of cervical screw fixation were evaluated: self-tapping (ST) versus self-drilling (SD) screws, the effect of screw geometry (length, diameter, thread pitch), and the use of rescue screws. (More)
OBJECTIVE To evaluate the effects of tibial plateau leveling osteotomy (TPLO) on femorotibial contact mechanics and 3-dimensional (3D) kinematics in cranial cruciate ligament (CrCL)-deficient stifles of dogs. STUDY DESIGN In vitro biomechanical study. ANIMALS Unpaired pelvic limbs from 8 dogs, weighing 28-35 kg. METHODS Digital pressure sensors placed(More)
High-dose testosterone enanthate (TE) may prevent hypogonadism-induced osteopenia. For this study, 3-mo-old male and female Fisher SAS rats underwent sham surgery, gonadectomy (GX), or GX plus 28 days TE administration (7.0 mg/wk). GX reduced serum sex hormones (i.e., testosterone, dihydrotestosterone, and estradiol) (P < 0.05) in both sexes and bone(More)
BACKGROUND CONTEXT Two common justifications for orienting cervical screws in an angled direction are to increase pullout strength and to allow use of longer screws. This concept is widely taught and has guided implant design. Fixed- versus variable-angle systems may offer strength advantages. Despite these teachings, there is a paucity of supporting(More)
OBJECTIVE This study examined the changes in synovial fluid levels of cytokines, oxidative stress and viscosity six months after intraarticular hyaluronic acid (HA) treatment in adults and elderly adults with knee osteoarthritis (OA). DESIGN This was a prospective, repeated-measures study design in which patients with knee OA were administered 1% sodium(More)
PURPOSE Because recent studies have shown that malunited or nonunited clavicle fractures treated nonsurgically have poor outcomes, early fixation of certain clavicle shaft fractures using contemporary implants has become more common. Little is known about the physiologic loading of these implants. This study was designed to observe the biomechanical(More)