Richard J. Herzog

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PURPOSE To characterize the inter- and intraobserver variability of qualitative, non-disk contour degenerative findings of the lumbar spine at magnetic resonance (MR) imaging. MATERIALS AND METHODS The case accrual method used to perform this institutional review board-approved, HIPAA-compliant retrospective study was the random selection of 111(More)
Significant reductions in total-body bone mineral density (BMD) have been reported in obese women who consume very-low-calorie diets. A reduction in bone mass is highly correlated with an increased risk of osteoporosis. The present study investigated whether strength training would prevent such reductions in dieters. Twenty-one healthy obese women weighing(More)
BACKGROUND CONTEXT This is a synopsis of a symposium presented to the North American Spine Society Annual Meeting in Montreal, Canada, 2002. PURPOSE To provide the reader with a distillation of the material presented regarding the diagnosis of failed back surgery syndrome (FBSS). METHODS Panel presentation. RESULTS The proper treatment of patients(More)
OBJECTIVE To determine the clinical validity of provocative sacroiliac joint (SIJ) maneuvers in making the diagnosis of sacroiliac joint syndrome (SIJS). DESIGN Prospective constructive cohort study using sacroiliac joint block (SIJB) as the diagnostic gold standard. SETTING Tertiary care center. PATIENTS Consecutive patients describing low back pain(More)
Lateral transpsoas interbody fusion (LTIF) is a minimally invasive technique that permits interbody fusion utilizing cages placed via a direct lateral retroperitoneal approach. We sought to describe the locations of relevant neurovascular structures based on MRI with respect to this novel surgical approach. We retrospectively reviewed consecutive(More)
STUDY DESIGN Prospective, match-cohort study of disc degeneration progression over 10 years with and without baseline discography. Objectives. To compare progression of common degenerative findings between lumbar discs injected 10 years earlier with those same disc levels in matched subjects not exposed to discography. Summary of Background Data.(More)
 An os acromiale is a developmental abnormality of ossification involving the anterior acromion which may contribute to impingement and rotator cuff disease. When axial MR sections do not include the acromioclavicular joint, the diagnosis of this often subtle abnormality will rest on its recognition on oblique coronal and sagittal images where it mimics the(More)
BACKGROUND AND OBJECTIVES A feared complication of spinal or epidural anesthesia is the development of epidural or spinal hematoma with subsequent neural element compression. Most available data are derived from the obstetric literature. Little is known about the frequency of hematoma occurrence among patients undergoing orthopedic joint arthroplasty, who(More)
BACKGROUND The purpose of this study was to evaluate the clinical results of latissimus dorsi tendon transfer in patients with an irreparable posterosuperior rotator cuff tear to help determine which patient and anatomic factors affect clinical outcome. METHODS Fourteen patients with a latissimus dorsi tendon transfer were clinically evaluated with use of(More)
STUDY DESIGN A prospective study was done to assess the diagnostic value of radionuclide imaging (bone scan) in the evaluation of sacroiliac joint syndrome OBJECTIVES To determine the sensitivity and specificity of radionuclide imaging in establishing a diagnosis of sacroiliac joint syndrome in patients with low back pain. SUMMARY OF BACKGROUND DATA(More)