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PURPOSE To measure the effect of extension, flexion, lateral bending, and axial rotation loads applied to the spine on the anatomic relationship of the spinal nerves in the neural foramen to the ligamentum flavum and the intervertebral disk, anc to determine the effect of disk degeneration on the response to loading. METHODS Cadaveric lumbar motion(More)
A small-scale biomechanical disc culture system was designed to stimulate intervertebral disc (IVD) 'motion segment' in culture environment with load-controlled compression and combined load (compression+shear). After 7 days of diurnal mechanical loading, cell viability of discs stimulated with static compression load (0.25 MPa) and static combined load(More)
We compared the tear break-up time (BUT) and Schirmer test value after myopic excimer laser photorefractive keratectomy (PRK). Patients with normal preoperative Schirmer test value and BUT were included. Pre- and post-operative tear break-up time and Schirmer test values were measured in 220 eyes who underwent PRK. Minimum follow-up was 6 months. Visx 20/20(More)
To evaluate the etiology of corneal opacities, a study was done on the immunohistochemical staining for heat shock protein (HSP) 72/73 and c-fos after myopic excimer laser photorefractive keratectomy (PRK). New Zealand white rabbits (60 eyes) were divided into four groups: -6-, -9- and -15-dpt operation groups and a control group (only corneal epithelium(More)
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