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BACKGROUND The published two-year results of the pivotal U.S. Food and Drug Administration investigational device exemption trial with the use of the Bryan cervical disc arthroplasty compared with anterior cervical discectomy with fusion for treating single-level degenerative cervical disc disease revealed a significantly superior overall success rate in(More)
BACKGROUND Measurements obtained from clinical computed tomography examinations may yield information leading to the diagnosis of decreased bone mineral density, without added expense to the patient. The purpose of the present study was to determine if Hounsfield units, a standardized computed tomography attenuation coefficient, correlate with bone mineral(More)
Sarcomere shortening and ultrastructure of intact isolated myocytes from ventricles of three-week-old and adult rabbits were examined. Cells were fixed and embedded, and after measuring their sarcomere shortening in response to electrical stimulation, they were examined in serial thin sections by electron microscopy. This structure-function analysis showed(More)
STUDY DESIGN The classification system was derived through a literature review and expert opinion of experienced spine surgeons. In addition, a multicenter reliability and validity study of the system was conducted on a collection of trauma cases. OBJECTIVES To define a novel classification system for subaxial cervical spine trauma that conveys(More)
OBJECT Interspinous process decompression (IPD) theoretically relieves narrowing of the spinal canal and neural foramen in extension and thus reduces the symptoms of neurogenic intermittent claudication (NIC). The purpose of this study was to compare the efficacy of IPD with nonoperative treatment in patients with NIC secondary to degenerative(More)
BACKGROUND CONTEXT The Neck Disability Index (NDI), the short form-36 (SF-36) physical component summary (PCS), and pain scales for arm and neck pain are increasingly used to evaluate treatment effectiveness after cervical spine surgery. The minimum clinically important difference (MCID) is a threshold of improvement that is clinically relevant to the(More)
STUDY DESIGN A prospective, randomized, multicenter study of surgical treatment of cervical disc disease. OBJECTIVE To assess the safety and efficacy of cervical disc arthroplasty using a new arthroplasty device at 24-months follow-up. SUMMARY OF BACKGROUND DATA Cervical disc arthroplasty preserves motion in the cervical spine. It is an alternative to(More)
BACKGROUND There is a subset of blunt trauma patients that present with symptoms suspicious for cervical spine injury or with unreliable clinical exams whose initial plain radiographs or cervical computed tomography (CT) scan are negative. Uncertainty remains, however, because no gold standard has been established for definitively clearing the cervical(More)