keyword
MENU ▼
Read by QxMD icon Read
search

Pedicle

keyword
https://www.readbyqxmd.com/read/28822311/lingular-segment-torsion-following-a-left-upper-division-segmentectomy
#1
Naohiro Taira, Hidenori Kawasaki, Sayako Takahara, Tomonori Furugen, Takaharu Ichi, Kazuaki Kushi, Tomofumi Yohena, Tsutomu Kawabata
INTRODUCTION: Numerous publications regarding lung torsion have reported lobar torsion after lobectomy. On the other hand, torsion of the remaining segment after segmentectomy is extremely rare. We herein report a rare case of lingular segment torsion following a left upper division segmentectomy. CASE: A 68-year old female underwent thoracoscopic segmentectomy of the left upper division. She underwent chest radiography immediately after the initial surgery, which revealed complete expansion on the operated side...
August 4, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28821444/circumferential-fusion-a-comparative-analysis-between-anterior-lumbar-interbody-fusion-with-posterior-pedicle-screw-fixation-and-transforaminal-lumbar-interbody-fusion-for-l5-s1-isthmic-spondylolisthesis
#2
Erik Y Tye, Joseph E Tanenbaum, Andrea S Alonso, Roy Xiao, Michael P Steinmetz, Thomas E Mroz, Jason W Savage
BACKGROUND CONTEXT: Transforaminal lumbar interbody fusion (TLIF) or anterior lumbar interbody fusion with percutaneous pedicle screws (ALIFPS) offer significantly higher radiographic fusion rates than other fusion techniques for L5-S1 isthmic spondylolisthesis (IS). As it stands, there is a relative paucity of comparative data of the two techniques. PURPOSE: To define the clinical, radiographic, and financial differences between TLIF and ALIFPS for L5-S1 IS. STUDY DESIGN/SETTING: A retrospective cohort study conducted at a single-tertiary care center...
August 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28820844/a-new-method-for-reconstruction-of-vermilion-deficiency-in-cleft-lip-deformity-the-bi-winged-myomucosa-switch-flap
#3
KyungHoon Chung, Lun-Jou Lo
BACKGROUND: This study reviewed the method of using "Bi-winged myomucosa switch flap" for correction of secondary cleft lip deformity in patients with vermilion mucosa deficiency, lack of the central tubercle and disproportionate lip projection, obviating the conventional Abbé flap when the prolabium has acceptable philtrum and Cupid's bow definition. METHODS: The technique was applied to adult patients with secondary vermilion deficiency after primary bilateral cleft lip repair...
August 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28819799/accuracy-of-cannulated-pedicle-screw-versus-conventional-pedicle-screw-for-extra-pedicular-screw-placement-in-dysplastic-pedicles-without-cancellous-channel-in-adolescent-idiopathic-scoliosis-a-computerized-tomography-ct-analysis
#4
Chee Kean Lee, Chris Yin Wei Chan, Siti Mariam Abd Gani, Mun Keong Kwan
PURPOSE: This study aimed at studying the accuracy and safety of extra-pedicular screw insertion for dysplastic pedicles in AIS comparing cannulated screw system versus conventional screw system. METHODS: 104 AIS patients with 1524 pedicle screws were evaluated using CT scan. 302 screws were inserted in dysplastic pedicles using fluoroscopic guidance technique. 155 screws were inserted using a cannulated system (Group 1), whereas 147 screws were inserted using standard screws (Group 2)...
August 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28819694/thoracic-corpectomy-for-neoplastic-vertebral-bodies-using-a-navigated-lateral-extracavitary-approach-a-single-center-consecutive-case-series-technique-and-analysis
#5
Sebastian Hartmann, Christoph Wipplinger, Anja Tschugg, Pujan Kavakebi, Alexander Örley, Pierre Pascal Girod, Claudius Thomé
Thoracic myelopathy is often caused by vertebral body fractures resulting from neoplastic conditions, traumatic events, or infectious diseases. One of the preferred procedures for treating it is the lateral extracavitary approach (LECA) with single-level or multilevel decompressive corpectomy and reconstruction. The aim of this retrospective study was to analyze the thoracic lateral extracavitary approach with corpectomy using vertebral body replacement systems (VBR-S) and dorsal reconstruction. Twenty-four patients with metastatic or primary lesions of thoracic vertebrae T2-T12 underwent spinal decompression and ventral column reconstruction with correction of spinal deformity via a LECA...
August 17, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28819344/positioning-performance-of-power-and-manual-drivers-in-posterior-spinal-fusion-procedures
#6
J Micah Prendergast, Alexander C Perry, Vikas V Patel, Emily M Lindley, Mark E Rentschler
This work presents an analysis and comparison of the efficacy of two methods for pedicle screw placement during posterior spinal fusion surgery. A total of 100 screws (64 manual and 36 power driven), all placed utilizing a surgical navigation system, were analyzed and compared. Final screw placement was compared to initial surgical plans using the navigation system, and the final screw locations were analyzed on the basis of angular deviation from these planned trajectories as well as screw translation within a critical reference plane...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28817960/effectiveness-of-pedicle-screw-inclusion-at-the-fracture-level-in-short-segment-fixation-constructs-for-the-treatment-of-thoracolumbar-burst-fractures-a-computational-biomechanics-analysis
#7
Shady Elmasry, Shihab Asfour, Francesco Travascio
When treating thoracolumbar burst fractures (BF), short-segment posterior fixation (SSPF) represents a less invasive alternative to the traditional long-segment posterior fixation (LSPF) approach. However, hardware failure and loss of sagittal alignment have been reported in patients treated with SSPF. Including pedicle screws at the fracture level in SSPF constructs has been proposed to improve stiffness and reliability of the construct. Accordingly, the biomechanical performance of the proposed construct was compared to LSPF via a computational analysis...
August 17, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28816274/-retroperitoneal-laparoscopic-with-renal-pedicle-rotation-for-partial-nephrectomy-of-ventro-renal-tumor
#8
Y H Liang, X B Zu, X Cheng, L F Liu
OBJECTIVE: Retro-laparoscopic partial nephrectomy is a challenge for ventro-renal tumors, especially hilar tumors. The tumors are partial or entirely out of operative field and there is blind space for operation. To solve this problem, a set of techniques including renal pedicle rotation is developed. METHODS: A set of techniques including renal pedicle rotation, double-layer suture, early artery unclamping for retro-laparoscopic nephrectomy for ventro-renal tumors, especially hilar tumors were developed...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28811983/a-novel-spinal-implant-for-fusionless-scoliosis-correction-a-biomechanical-analysis-of-the-motion-preserving-properties-of-a-posterior-periapical-concave-distraction-device
#9
Roderick M Holewijn, Marinus de Kleuver, Albert J van der Veen, Kaj S Emanuel, Arno Bisschop, Agnita Stadhouder, Barend J van Royen, Idsart Kingma
STUDY DESIGN: Biomechanical study. OBJECTIVE: Recently, a posterior concave periapical distraction device for fusionless scoliosis correction was introduced. The goal of this study was to quantify the effect of the periapical distraction device on spinal range of motion (ROM) in comparison with traditional rigid pedicle screw-rod instrumentation. METHODS: Using a spinal motion simulator, 6 human spines were loaded with 4 N m and 6 porcine spines with 2 N m to induce flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28811142/anatomical-analysis-of-human-ligamentum-flavum-in-the-cervical-spine-special-consideration-to-the-attachments-coverage-and-lateral-extent
#10
Mohammad Suhrab Rahmani, Hidetomi Terai, Javid Akhgar, Akinobu Suzuki, Hiromitsu Toyoda, Masatoshi Hoshino, Koji Tamai, Sayed Abdullah Ahmadi, Kazunori Hayashi, Shinji Takahashi, Hiroaki Nakamura
BACKGROUND: Posterior decompression surgeries of cervical spine such as laminoplasty and laminoforaminotomy are well established and increasing in aging population. The anatomical knowledge of cervical ligamentum flavum (LF) is critical to perform posterior spinal surgeries, however, few studies have evaluated it, especially the relation of LF and neural foramen. METHODS: The whole spine was removed en bloc from 15 formalin-embalmed human cadavers and then divided into two segments along the pedicle bases...
August 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28810871/effect-of-different-inner-core-diameters-on-structural-strength-of-cannulated-pedicle-screws-under-various-lumbar-spine-movements
#11
Chia-Ming Chang, Yu-Shu Lai, Cheng-Kung Cheng
BACKGROUND: Currently, cannulated pedicle screws have been widely used in minimal invasive or navigation techniques. However, the stress distribution and the strength of different core diameters of cannulated screw are not clear. This study aimed to investigate the mechanical strength of cannulated screws with different inner core diameter under various lumbar spine movements using finite element analysis. RESULTS: The results showed that the von-Mises stress of a cannulated screw was larger than that of a solid screw in all loading conditions, especially above 2 mm in cannulated core diameter...
August 15, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28810611/three-dimensional-spiral-ct-measurement-of-atlantal-pedicle-and-its-clinical-application
#12
Wengui Xie, Pengfei Gao, Lixin Ji
The study aimed to establish the safe placement area and corresponding entry angle of atlantal pedicle screw using axial computed tomography (CT) measurement of atlas, in order to guide the clinical operation. Spiral thin-slice CT scan of atlas and three-dimensional reconstruction of 38 patients were randomly selected. Screw placement space was defined as the distance between the tangent lines of entry channel on the atlantal cross section and inner edge of transverse foramen and outer edge of spinal canal...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28807432/non-neurologic-burst-thoracolumbar-fractures-fixation-case-control-study
#13
Aymeric Amelot, Joseph Cristini, Alexis Moles, Celine Salaud, Olivier Hamel, Eric Bord, Kevin Buffenoir
STUDY DESIGN: Burst fractures not associated with any neurological deficits are frequent but not therapeutic agreement on their management is available to date. This case-control study was conducted to try to help guide therapeutic decision in the treatment of such fractures. MATERIALS AND METHODS: This case-control study includes consecutive retrospective evaluation of 25 case-patients treated by posterior short-segment fixation associated with kyphoplasty (SFK) in the treatment of A3 thoracolumbar unstable fractures, as compared to a control-group composed of 82 patients treated by long-segment (LF) pedicle screws...
August 4, 2017: Injury
https://www.readbyqxmd.com/read/28807000/necrotizing-streptococcal-myositis-of-the-upper-extremity-a-case-report
#14
Johannes C Reichert, Götz Habild, Paul Simon, Ulrich Nöth, Jan B Krümpelmann
BACKGROUND: Necrotizing myositis is a rare but life-threatening soft-tissue infection characterized by rapidly spreading inflammation and subsequent necrosis of the affected tissue. The myositis is often caused by toxin-producing, virulent bacteria such as group A β-hemolytic streptococcus and associated with severe systemic toxicity. It is rapidly fatal unless diagnosed promptly and treated aggressively. However, necrotizing myositis is often initially misdiagnosed as a more benign soft-tissue infection as such fulminant, invasive muscle infections are rare with no more than 30 cases reported over the last century...
August 15, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28806290/-clinical-and-quantitative-isokinetic-comparison-of-abdominal-morbidity-and-dynamics-following-diep-versus-muscle-sparing-free-tram-flap-breast-reconstruction
#15
Hirokazu Uda, Hideaki Kamochi, Syunji Sarukawa, Ataru Sunaga, Yasusih Sugawara, Kotaro Yoshimura
BACKGROUND: The deep inferior epigastric perforator (DIEP) flap, which is a modification of the muscle-sparing free transverse rectus abdominis musculocutaneous (msTRAM) flap, is being more frequently used in an effort to reduce postoperative abdominal morbidity. However, there is no consensus as to which of these flaps is superior. We aimed to compare quantitative measurements of abdominal function obtained with an isokinetic dynamometer after DIEP and msTRAM flap elevation. METHODS: Patients who underwent unilateral single-pedicled DIEP (n = 42) or msTRAM flap (n = 36) breast reconstruction performed by a single surgeon were included in this study...
August 3, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28805950/management-of-osteonecrosis-of-the-femoral-head-with-pedicled-iliac-bone-flap-transfer-a-multicenter-study-of-2190-patients
#16
Dewei Zhao, Hui Xie, Yongqing Xu, Yisheng Wang, Aixi Yu, Youwen Liu, Aimin Wang, Wei He, Xiuli Wang, Zirong Li, Wei Sun, Simiao Tian, Benjie Wang, Baoyi Liu
BACKGROUND: Osteonecrosis of the femoral head (ONFH) often affects young active adults and leads to destruction of the hip joint and disabling arthritis. Several procedures have been developed to arrest the progress of osteonecrosis and postpone the procedure of total hip replacement especially in young patients. The aim of this multicenter study was to analyze the results of the use of the vascularized iliac bone flap transfer for management of ONFH. METHODS: From January 1985 to December 2012, a total of 2190 patients (2690 hips) with the mean age of 43...
August 14, 2017: Microsurgery
https://www.readbyqxmd.com/read/28802886/-lumbar-artery-perforator-flap-for-breast-reconstruction
#17
J-F Honart, N Leymarie, B Sarfati, H Alknashnam, K Rem, F Rimareix, F Kolb
Even though DIEP-SIEA flaps or latissimus dorsi musculocutaneous flap are the most frequently used, a wide variety of flaps have been described for autologous breast reconstruction. Concerning the choice of donor-site, the aim is to prevent and to limit the morbidity. That is why the donor-site should be carefully chosen, according to the morphology of the patient. Lumbar artery perforator flap (LAP) is an option for breast reconstruction, but it is not well known and its use is limited. This study summarizes the authors' early experience with free LAP flap for breast reconstruction...
August 9, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28802163/obstructive-mobile-small-intestinal-tumor-without-radiographic-stigmata-of-bezoar
#18
Elif Onursal, Merilyn Baby, Ali Chaudhri, Gerard A Baltazar
INTRODUCTION: Gastrointestinal leiomyomas are often clinically silent until they bleed or grow large enough to cause local mass effect. PRESENTATION OF CASE: We report the unique case of an otherwise healthy 69-year-old male who developed a small bowel obstruction secondary to a mobile small intestinal leiomyoma. During initial evaluation, computed tomography did not demonstrate the cause of obstruction. Because of worsening clinical status with conservative management, the patient required emergency laparotomy...
July 19, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28801863/pedicle-screw-fixation-in-thoracolumbar-and-lumbar-spine-assisted-by-lateral-fluoroscopic-imaging-a-study-to-evaluate-the-accuracy-of-screw-placement
#19
S P Mohanty, S N Bhat, M Pai Kanhangad, G S Gosal
BACKGROUND: The purpose of this study was to evaluate the accuracy of pedicle screw placement, its advantages, and limitations in posterior instrumentation of thoracolumbar and lumbar burst fractures assisted only by lateral fluoroscopic imaging. MATERIALS AND METHODS: Pre- and postoperative computerized tomographic (CT) scans of 117 patients with thoracolumbar and lumbar burst fractures, who underwent posterior instrumentation with pedicle screw fixation, were prospectively analyzed...
August 11, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28801582/percutaneous-placement-of-iliosacral-screws-under-the-guidance-of-axial-view-projection-of-the-s1-pedicle-a-case-series
#20
Yingchao Yin, Zhiyong Hou, Ruipeng Zhang, Lin Jin, Wei Chen, Yingze Zhang
The aim of this study was to evaluate the safety and efficacy of percutaneous placement of iliosacral screws under the guidance of axial view projection of the S1 pedicle clinically. This case series includes 58 consecutive unstable pelvic injury patients, which were treated with iliosacral screws between July 2011 and July 2016. Patients were divided into two groups: normal sacrum (n = 31) and dysmorphic sacrum (n = 27). A single orthopedic surgeon operated on all patients, with percutaneous placement of iliosacral screws under the guidance of axial view projection of the S1 pedicle...
August 11, 2017: Scientific Reports
keyword
keyword
23801
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"