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Lumbar spine

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https://www.readbyqxmd.com/read/28334320/interbody-spacer-material-properties-and-design-conformity-for-reducing-subsidence-during-lumbar-interbody-fusion
#1
Lillian S Chatham, Vikas V Patel, Christopher M Yakacki, R Dana Carpenter
One major complication with lumbar spinal fusion surgery is subsidence, in which the interbody spacer penetrates the vertebral endplates. Towards reducing the risk of subsidence, the objective of this study was to investigate the effects of interbody spacer material and design on the stress in the lumbar spine after interbody fusion. A finite element model of the L4-L5 motion segment was developed from computed tomography images of a cadaveric lumbar spine. A spacer, pedicle screws, and posterior rods were incorporated into the model, and the system was loaded under axial compression...
March 23, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28333244/the-retro-rectus-prosthesis-for-core-myofascial-restoration-in-cosmetic-abdominoplasty
#2
Sheldon M Lincenberg
Background: The retro-rectus placement of a prosthesis for reinforcement of a hernia repair is a powerful surgical maneuver and results in reduced hernia recurrence rates in the absence of ventral hernia. Fascial reinforcement theoretically should improve columnar support to the spine and enhance athletic activity. The purpose of this study was to demonstrate the long-term efficacy of the restoration of the cylindrical lumbar abdominal myofascial complex as an adjunct to cosmetic abdominoplasty...
February 24, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28332372/efficacy-and-safety-of-different-aceclofenac-treatments-for-chronic-lower-back-pain-prospective-randomized-single-center-open-label-clinical-trials
#3
Jae Ho Yang, Kyung Soo Suk, Byung Ho Lee, Woo Chul Jung, Young Mi Kang, Ji Hye Kim, Hak Sun Kim, Hwan Mo Lee, Seong Hwan Moon
PURPOSE: Nonsteroidal anti-inflammatory drugs are a mainstay for medical treatment of chronic lower back pain (CLBP). Increased dose intervals for medication have been associated with increased patient adherence to prescriptions. The purpose of this clinical trial was to compare the efficacy and safety of a once daily dose of aceclofenac controlled release (CR) and a twice daily dose of aceclofenac for CLBP management. MATERIALS AND METHODS: A prospective, randomized, single center, open-label clinical trial was performed to compare the efficacy and safety of aceclofenac CR (200 mg once daily) to aceclofenac dose (100 mg twice daily)...
May 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28332172/quantitative-ultrasound-and-dxa-measurements-in-aromatase-inhibitor-treated-breast-cancer-women-receiving-denosumab
#4
A Catalano, A Gaudio, N Morabito, G Basile, R M Agostino, A Xourafa, M Atteritano, E Morini, G Natale, A Lasco
PURPOSE: Denosumab has been proven to reduce fracture risk in breast cancer (BC) women under aromatase inhibitors (AIs). Quantitative ultrasound (QUS) provides information on the structure and elastic properties of bone. Our aim was to assess bone health by phalangeal QUS and by dual-energy X-ray absorptiometry (DXA), and to evaluate bone turnover in AIs-treated BC women receiving denosumab. METHODS: 35 Postmenopausal BC women on AIs were recruited (mean age 61...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28331936/ultrasound-guidance-for-difficult-lumbar-puncture-in-children-pearls-and-pitfalls
#5
REVIEW
Prakash Muthusami, Ashley James Robinson, Manohar M Shroff
Pediatric lumbar puncture can be challenging or unsuccessful for several reasons. At the same time, the excellent sonographic window into the pediatric spine provides a distinct opportunity for ultrasound-guided lumbar puncture. Minimal cerebrospinal fluid and thecal displacement by subdural or epidural hematomas are common after failed clinical attempts. Ultrasound is useful for determining a safe infraconal level for subarachnoid access. Real-time guidance increases not only the success rate but also the safety of diagnostic lumbar puncture and injections for chemotherapy and myelography...
March 22, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28331805/prevotella-osteomyelitis-after-dental-capping-procedure
#6
Alexander Williams, Thomas Kerkering
We present a 49 year old man who presented to the emergency department with severe lower back pain of 5 days duration. One week prior he had been diagnosed with a right psoas muscle abscess and was discharged with a 28 day course of moxifloxacin after the preliminary culture from the psoas grew an anaerobic organism. MRI of the lumbar spine showed marrow edema in the L2 body, occupying most of the anterior two thirds of the body, with cortical erosion at the anteroinferior aspect of L1. Blood cultures were negative and bone biopsy of L2 showed neutrophilic invasion and reactive changes...
2017: IDCases
https://www.readbyqxmd.com/read/28330908/the-effect-of-dairy-intake-on-bone-mass-and-body-composition-in-early-pubertal-girls-and-boys-a-randomized-controlled-trial
#7
Kara A Vogel, Berdine R Martin, Linda D McCabe, Munro Peacock, Stuart J Warden, George P McCabe, Connie M Weaver
Background: Calcium retention increases with increasing body mass index (BMI) on recommended calcium intakes. Dairy foods are an excellent source of essential nutrients that are needed to increase bone mineral content (BMC) and potentially decrease fracture.Objective: We compared children who were overweight with children who were healthy weight for the accrual of bone mass in response to an extra 3 servings dairy/d compared with usual intake.Design: Participants were 240 healthy boys and girls (64%), aged 8-15...
March 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28329748/extensive-multilevel-split-laminotomy-for-debulking-a-cervicothoracolumbar-nondysraphic-intramedullary-spinal-cord-lipoma-in-a-2-month-old-infant
#8
Ha Son Nguyen, Sean Lew
INTRODUCTION: Laminectomy is the traditional approach for posterior exposure of the spinal canal for tumor resection. Another technique is split laminotomy, which entails the division and retraction of the spinous processes and laminae to access the thecal sac. This technique has been employed for small-segment exposures, but not extensively explored for long-segment exposures. CASE: A 2-month-old male presented with progressive right-leg plegia. MRI of the spine revealed a large, intramedullary spinal-cord lipoma extending from C6 to L5...
March 23, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28328853/updated-association-of-tea-consumption-and-bone-mineral-density-a-meta-analysis
#9
Zhao-Fei Zhang, Jun-Long Yang, Huan-Chang Jiang, Zheng Lai, Feng Wu, Zhi-Xiang Liu
BACKGROUND: Current studies evaluating the association of tea consumption and bone mineral density (BMD) have yielded inconsistent findings. Therefore, we conducted a meta-analysis to assess the relationship between tea consumption and BMD. METHODS: The PubMed, Embase, and Cochrane Library databases were comprehensively searched, and a meta-analysis performed of all observational studies assessing the association of tea consumption and BMD. Forest plots were used to illustrate the results graphically...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28328849/protrusion-of-a-rod-into-the-spinal-canal-10-years-after-segmental-lumbar-spine-surgery
#10
Siyi Cai, Xiangyi Kong, Chengrui Yan, Yipeng Wang, Xueshuai Wan, Jialu Zhang, Guixing Qiu, Keyi Yu
The objective of this article is to report an unusual case of a spinal rod that protruded into the spinal canal after lumbar spine surgery.Only 4 cases of spinal rod migration with protrusion into the spinal canal have been reported. This is the first report of a case involving the use of posterior low lumbar segmental instrumentation with a screw-rod system. The left side of the rod gradually migrated and finally protruded into the canal and compressed the cord.A 60-year-old woman presented with pain and numbness of the posterior aspect of the left leg after a long-distance walk...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327190/primary-pain-generator-identification-by-ct-spect-in-a-patient-with-low-back-pain-a-case-report
#11
Gabriel Tender, Adriana Constantinescu, Andrew Conger, Anthony DiGiorgio
BACKGROUND: Chronic low back pain is one of the most common conditions encountered in the middle-age population. Identifying the primary pain generator is notoriously difficult. The computed tomography-single-photon emission computed tomography (CT-SPECT) is emerging as a new diagnostic modality for this purpose. CASE PRESENTATION: This 68-year-old Caucasian male presented with intractable low back pain refractory to maximal conservative treatment, including medication and extensive physical therapy...
March 21, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28327138/accuracy-of-pedicle-screw-placement-in-patients-with-marfan-syndrome
#12
Jun Qiao, Feng Zhu, Leilei Xu, Zhen Liu, Xu Sun, Bangping Qian, Qing Jiang, Zezhang Zhu, Yong Qiu
BACKGROUND: There is no study concerning safety and accuracy of pedicle screw placement in Marfan syndrome. The objective of this study is to investigate accuracy and safety of pedicle screw placement in scoliosis associated with Marfan syndrome. METHODS: CT scanning was performed to analyze accuracy of pedicle screw placement. Pedicle perforations were classified as medial, lateral or anterior and categorized to four grades: ≤ 2 mm as Grade 1, 2.1-4.0 mm as Grade 2, 4...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28326352/aging-lifestyle-factors-hormones-and-bone-health-in-singaporean-men
#13
Victor Hng Hang Goh, William George Hart
PURPOSE: The present study examined how age, bodyweight, body fat, regular exercise and some endocrine factors are associated with osteoporosis, spine bone mineral density (Sbmd) and femoral neck bone mineral density (Fnbmd) in Singaporean men. METHODS: Body composition and bone scans of lumbar spine at L2-L4 and hip were carried out with duel-energy X-ray absorptiometry (DXA). Anthropometric parameters were measured and demographic data, medical history and exercise schedule were collected via a questionnaire...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326351/effects-of-low-dose-ibuprofen-supplementation-and-resistance-training-on-bone-and-muscle-in-postmenopausal-women-a-randomized-controlled-trial
#14
Whitney R D Duff, Saija A Kontulainen, Darren G Candow, Julianne J Gordon, Riley S Mason, Regina Taylor-Gjevre, Bindu Nair, Michael Szafron, Adam D G Baxter-Jones, Gordon A Zello, Philip D Chilibeck
PURPOSE: To compare the effects of nine months of exercise training and ibuprofen supplementation (given immeditately after exercise sessions) on bone and muscle in postmenopausal women. METHODS: In a double-blind randomized trial, participants (females: n = 90, mean age 64.8, SD 4.3 years) were assigned (computer generated, double blind) to receive supervised resistance training or stretching 3 days/week, and ibuprofen (400 mg, post-exercise) or placebo (i...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326338/predictors-of-teriparatide-treatment-failure-in-patients-with-low-bone-mass
#15
Tarig Elraiyah, Adil H Ahmed, Zhen Wang, Joshua N Farr, Mohammad H Murad, Matthew T Drake
INTRODUCTION: While teriparatide is the only skeletal anabolic agent approved in the United States, treatment failure is a major concern which complicates its clinical utility. We sought to identify factors that predict response failure in patients with low bone mass. METHOD: We performed a retrospective study of adults with osteopenia or osteoporosis (T-scores < - 1.0 and - 2.5 SD below normal, respectively, at the total hip or lumbar spine) treated with teriparatide at the Mayo Clinic (Rochester, Minnesota) between November 2002-December 2012...
June 2016: Bone Reports
https://www.readbyqxmd.com/read/28325465/analysis-or-evaluation-of-risk-factors-and-predictability-of-postoperative-urinary-retention-following-spinal-surgery
#16
Bikash Bose
Lee S, Kim CH, Chung CK, Park SB, Yang SH, et al. Risk factor analysis for postoperative urinary retention after surgery for degenerative lumbar spinal stenosis. Spine J 2017:17:469-77 (in this issue).
April 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28324797/consistency-of-a-lumbar-movement-pattern-across-functional-activities-in-people-with-low-back-pain
#17
Andrej V Marich, Ching-Ting Hwang, Gretchen B Salsich, Catherine E Lang, Linda R Van Dillen
BACKGROUND: Limitation in function is a primary reason people with low back pain seek medical treatment. Specific lumbar movement patterns, repeated throughout the day, have been proposed to contribute to the development and course of low back pain. Varying the demands of a functional activity test may provide some insight into whether people display consistent lumbar movement patterns during functional activities. Our purpose was to examine the consistency of the lumbar movement pattern during variations of a functional activity test in people with low back pain and back-healthy people...
March 7, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28324213/-split-and-splayed-c3-traumatic-lateral-c2-3-dislocation-without-neurological-deficits-unique-case-and-its-management
#18
Apinderpreeet Singh, Pravin Salunke, Rajeev P Kamble
BACKGROUND: Traumatic C2-3 dislocation has been often described in the antero-posterior plane but is extremely rare in the lateral plane. Such dislocations have been described in thoraco-lumbar and C1-2. The need to study the imaging in multiple planes has been highlighted to plan proper realignment. METHODS: A young male presented with neck pain alone following a train accident. The imaging showed a fracture of C3 splaying it. The C2-3 showed lateral dislocation in the lateral plane with locked C2-3 facets on one side and C3-4 facets on the other...
March 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28323913/accrual-of-bone-mass-in-children-and-adolescents-with-cystic-fibrosis
#19
Sonakshi Sharma, Mirjana Jaksic, Sheryl Fenwick, Catherine Byrnes, Tim Cundy
Context: Low bone density is a recognised complication of cystic fibrosis (CF). Hypothesis: Accrual of bone mass is most impaired in the sickest children, as judged by nutritional status and pulmonary function. Design: Retrospective analysis of correlation between lumbar spine BMD, BMI and FEV1 z-score in children and adolescents with CF. Setting: Specialist CF service at a pediatric hospital. Patients: 60 participants aged 5...
February 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323717/treatment-of-lumbar-split-fracture-dislocation-with-short-segment-or-long-segment-posterior-fixation-and-anterior-fusion
#20
Fei Chen, Yijun Kang, Haisheng Li, Guohua Lv, Chang Lu, Jing Li, Bing Wang, Weihua Chen, Zhehao Dai
STUDY DESIGN: Retrospective analysis of 16 patients. SUMMARY OF BACKGROUND DATA: The lumbar split fracture-dislocation is a rare but severe injury, which is type C1.2.1 fracture in the Association for the Study of Internal Fixation spine fracture classification. The axial compressive and torsional force shattered the vertebral body into 2 halves and displaced them rotationally. This kind of fracture is so highly unstable that the treatment is very challenging. PURPOSE: The purpose of this study was to report and compare on clinical outcome and complications of patients with lumbar split fracture-dislocation which had been treated either short-segment or long-segment posterior fixation and anterior fusion...
April 2017: Clinical Spine Surgery
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