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Computed tomography, Scoliosis,

Takahiro Makino, Takashi Kaito, Yusuke Sakai, Shota Takenaka, Kazuomi Sugamoto, Hideki Yoshikawa
BACKGROUND: Vertebral bodies in patients with adolescent idiopathic scoliosis (AIS) usually have frontal wedge deformities. However, the plasticity of the deformed vertebrae in skeletally immature patients is unknown. The purpose of our study was to clarify the plasticity of vertebral deformities in skeletally immature patients with AIS by using in vivo three-dimensional (3D) analysis. METHODS: Ten female patients with AIS (mean age, 12.2 years; three patients, Lenke type 1; five patients, type 2; two patients, type 5) who underwent posterior fusion and whose Risser grade was ≤3 at surgery were included...
October 12, 2016: BMC Musculoskeletal Disorders
Tetsuya Ishimaru, Masahiko Sugiyama, Mari Arai, Kaori Satoh, Chizue Uotani, Masataka Takahashi, Shohei Takami, Jun Fujishiro, Tadashi Iwanaka
AIM: Scoliosis, which is often associated with neurological impairment in children, sometimes makes it difficult to perform laparoscopic procedures. This study assessed the impact of scoliosis on performing laparoscopic Nissen fundoplication. METHODS: Medical records and radiographic examinations of patients who underwent laparoscopic Nissen fundoplication at a single institution from 2006 to 2015 were reviewed retrospectively. Patients' data on age at surgery, height, weight, duration of pneumoperitoneum, and amount of bleeding were collected...
October 11, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
Akira Matsumura, Takashi Namikawa, Minori Kato, Tomonori Ozaki, Yusuke Hori, Noriaki Hidaka, Hiroaki Nakamura
The purpose of this study was to assess the clinical results of posterior corrective surgery using a multilevel transforaminal lumbar interbody fusion (TLIF) with a rod rotation (RR) and to evaluate the segmental corrective effect of a TLIF using CT imaging. The medical records of 15 consecutive patients with degenerative lumbar kyphoscoliosis (DLKS) who had undergone posterior spinal corrective surgery using a multilevel TLIF with an RR technique and who had a minimum follow-up of 2 years were retrospectively reviewed...
October 7, 2016: Journal of Neurosurgery. Spine
Michael A McHugh, Patrick M Poston, Nicholas O Rossi, Joseph W Turek
BACKGROUND: Chest radiography (CXR) has emerged as an attractive alternative imaging option for objective pre-operative assessment of pectus excavatum (PE) with comparable accuracy, reduced cost, and less radiation exposure when compared to computed tomography (CT). This study asked whether image quality, scoliosis, and asymmetry of the PE deformity would decrease the accuracy of CXR as compared to CT. METHODS: A database of PE patients receiving preoperative CXR and CT was created, and Haller-indices (HI) and correction-indices (CI) were calculated using each imaging modality...
September 2016: Journal of Pediatric Surgery
Terufumi Kokabu, Hideki Sudo, Yuichiro Abe, Manabu Ito, Yoichi M Ito, Norimasa Iwasaki
Flattening of the preimplantation rod contour in the sagittal plane influences thoracic kyphosis (TK) restoration in adolescent idiopathic scoliosis (AIS) surgery. The effects of multilevel facetectomy and screw density on postoperative changes in spinal rod contour have not been documented. This study aimed to evaluate the effects of multilevel facetectomy and screw density on changes in spinal rod contour from before implantation to after surgical correction of thoracic curves in patients with AIS prospectively...
2016: PloS One
Jin-Ho Choi, In Kyu Park, Young Tae Kim, Woo Sun Kim, Chang Hyun Kang
BACKGROUND: Previous classification systems of pectus excavatum have been based on subjective morphologic characteristics. We sought to suggest a new classification system derived from objective variables. METHODS: Patients who underwent surgical repair of pectus excavatum without a history of previous chest operations were included. Objective morphologic variables were measured from chest computed tomography scan images, and classification was performed by hierarchical clustering of measured indexes...
August 12, 2016: Annals of Thoracic Surgery
Ramazan Kocaaslan, Abdulkadir Tepeler, Ibrahim Buldu, Muhammed Tosun, Mehmet Mazhar Utangac, Tolga Karakan, Ekrem Ozyuvali, Namik Kemal Hatipoglu, Ali Unsal, Kemal Sarica
The objective of this study is to assess the utility of the Guy, S.T.O.N.E., and CROES nephrolithometry scoring systems (SS), and compare the capability of each system to predict percutaneous nephrolithotomy (PNL) outcome in patients with anatomical abnormalities. We retrospectively collected medical records of patients with anatomical abnormalities who underwent PNL for the treatment of renal calculi by experienced surgical teams in four referral centers. All of the patients were graded by a single observer from each department based on preoperative computed tomography images using each SS...
July 12, 2016: Urolithiasis
Tomohiro Banno, Tsuyoshi Ohishi, Tomohiko Hasegawa, Yu Yamato, Sho Kobayashi, Daisuke Togawa, Tatsuya Yasuda, Yukihiro Matsuyama
STUDY DESIGN: Retrospective study. OBJECTIVE: To investigate the accuracy of freehand iliac screw insertion and to determine how this can be done safely. BACKGROUND AND METHODS: Seventy-seven adult scoliosis patients with an average age of 70.1 years who underwent spinal deformity surgery with spinopelvic fixation using bilateral iliac screws were enrolled. Penetration of the iliac table was assessed using postoperative computed tomography (CT)...
June 28, 2016: Clinical Spine Surgery
Ludvig Vavruch, Hans Tropp
BACKGROUND: Scoliosis is traditionally evaluated by measuring the Cobb angle in radiograph images taken while the patient is standing. However, low-dose computed tomography (CT) images, which are taken while the patient is in a supine position, provide new opportunities to evaluate scoliosis. Few studies have investigated how the patient's position, standing or supine, affects measurements. The purpose of this study was to compare the Cobb angle in images from patients while standing versus supine...
2016: Polish Journal of Radiology
Mun Keong Kwan, Chee Kidd Chiu, Siti Mariam Abd Gani, Chris Yin Wei Chan
STUDY DESIGN: Retrospective review of CT scan. OBJECTIVE: To investigate the accuracy and safety of pedicle screws placed in AIS patients. SUMMARY OF BACKGROUND DATA: The reported pedicle screws perforation rates for corrective AIS surgery vary widely from 1.5% to 65.0%. Knowledge regarding the safety of pedicle screws in scoliosis surgery is very important in preventing complications. METHODS: This study investigates the accuracy and safety of pedicle screws placed in 140 AIS patients...
June 15, 2016: Spine
Toshiki Saito, Noriaki Kawakami, Taichi Tsuji, Tetsuya Ohara, Yoshitaka Suzuki, Ayato Nohara, Ryoji Tauchi, Kazuki Kawakami
STUDY DESIGN: This is a retrospective cohort study. BACKGROUND: Hemimetameric segmental shift (HMMS) is defined as a hemivertebral deformation in which 2 or more hemivertebrae exist on both sides of the spine and are separated by at least 1 normal vertebra. Reports of HMMS are rare and based on simple anterior x-ray images. No reports have used 3-dimensional computed tomography (3D-CT) to analyze both the anterior and posterior elements. The objective of this study was to analyze the morphology and clinical features of HMMS 3 dimensionally...
June 8, 2016: Journal of Pediatric Orthopedics
Yusuke Hashidume, Shunsuke Tachibana, Yukimasa Takada, Mitsutaka Edanaga, Michiaki Yamakage
A patient with Klippel-Feil syndrome had difficulties in inserting and placing an endotracheal tube under general anesthesia. Klippel-Feil syndrome, characterized by cervical vertebral fusion, scoliosis and endocardiosis, is a rare disease. Anesthesiologists should pay attention to management of anesthesia in airway troubles. A 53-year-old woman diagnosed with Klippel-Feil syndrome was scheduled for general anesthesia with intubation. We tried to insert an endotracheal tube using McGRATH MAC, but it was difficult to insert and place the tube...
April 2016: Masui. the Japanese Journal of Anesthesiology
Ronnie Sebro, Liam O'Brien, Martin Torriani, Miriam A Bredella
OBJECTIVE: The purpose of this study was (1) to evaluate the association of trunk muscle density assessed by computed tomography (CT) with age, gender, and BMI and (2) to evaluate the association between trunk muscle CT density and degenerative disc and facet joint disease of the lumbar spine. MATERIAL AND METHODS: The study was IRB approved and HIPAA compliant. The study group comprised 100 subjects (mean age 44.4 ± 22.2 years, 51 % male) who underwent CT of the abdomen and pelvis without intravenous contrast...
September 2016: Skeletal Radiology
Seth H Richman, Andrew J Razzano, Melanie A Morscher, Patrick M Riley
STUDY DESIGN: Case report. OBJECTIVE: To report a case of progressive pain and paraparesis secondary to metallosis four years after a pediatric posterior spinal fusion (PSF). SUMMARY OF BACKGROUND DATA: Metallosis as a late complication of pediatric spinal surgery is rarely reported. Myelographic computed tomography (CT) can be helpful in establishing the diagnosis. The use of serum chromium levels as a means of definitive diagnosis has been suggested, but has only been reported retrospectively...
May 11, 2016: Spine
Zhen Liu, Mengran Jin, Yong Qiu, Huang Yan, Xiao Han, Zezhang Zhu
To investigate the accuracy of O-arm navigation-assisted screw insertion in extremely small thoracic pedicles and to compare it with free-hand pedicle screw insertion in adolescent idiopathic scoliosis (AIS).A total of 344 pedicle screws were inserted in apical region (defined as 2 vertebrae above and below the apex each) of 46 AIS patients (age range 13-18 years) with O-arm navigation and 712 screws were inserted in 92 AIS patients (age range 11-17 years) with free-hand technique. According to the narrowest diameter orthogonal to the long axis of the pedicle on a trajectory entering the vertebral body on preoperative computed tomography, the pedicles were classified into large (>3 mm) and small (≤3 mm) subgroups...
May 2016: Medicine (Baltimore)
Jun Jiang, Bang-Ping Qian, Yong Qiu, Bin Wang, Yang Yu, Ze-Zhang Zhu
PURPOSE: The altered anatomic positions of important structures adjacent to the vertebrae in adolescent idiopathic scoliosis (AIS) patients have been comprehensively investigated by previous radiographic studies. However, no study has evaluated the altered position of left subclavian artery (SA) in these patients. The purpose of this study is to evaluate the altered position of left subclavian artery in AIS patients with a double thoracic curve pattern. METHODS: Nineteen Lenke type 2 AIS patients and thirteen normal teenagers were included in this study...
April 22, 2016: European Spine Journal
Jeremy J Macke, Raymund Woo, Laura Varich
This is a retrospective review of pedicle screw placement in adolescent idiopathic scoliosis (AIS) patients under 18 years of age who underwent robot-assisted corrective surgery. Our primary objective was to characterize the accuracy of pedicle screw placement with evaluation by computed tomography (CT) after robot-assisted surgery in AIS patients. Screw malposition is the most frequent complication of pedicle screw placement and is more frequent in AIS. Given the potential for serious complications, the need for improved accuracy of screw placement has spurred multiple innovations including robot-assisted guidance devices...
June 2016: Journal of Robotic Surgery
Benjamin T Bjerke, Zoe B Cheung, Grant D Shifflett, Sravisht Iyer, Peter D Fabricant, Han Jo Kim
BACKGROUND: Current methods of measuring vertebral rotation by plain radiographs rely on anatomic landmarks that are not present in the postoperative spine or require advanced imaging. Furthermore, there are few studies on the incidence of crankshaft with modern pedicle instrumentation. QUESTIONS/PURPOSES: We sought to (1) describe and validate a method of vertebral rotation measurement using plain radiographs and (2) measure postoperative rotation in a series of patients treated for adolescent idiopathic scoliosis...
February 2016: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
Zhi-Wei Wang, Wayne Yuk-Wai Lee, Tsz-Ping Lam, Benjamin Hon-Kei Yip, Fiona Wai-Ping Yu, Wing-Sze Yu, Feng Zhu, Bobby Kin-Wah Ng, Yong Qiu, Jack Chun-Yiu Cheng
PURPOSE: Osteopenia has been widely reported in about 30 % of girls with adolescent idiopathic scoliosis (AIS). However, the bone quality profile of the 70 % non-osteopenic AIS defined by areal bone mineral density (BMD) with conventional dual-energy X-ray absorptiometry (DXA) has not been adequately studied. Our purpose was to verify whether abnormal volumetric BMD (vBMD) and bone structure (morphometry and micro-architecture) also existed in the non-osteopenic AIS when compared with matched controls using both DXA and high-resolution peripheral computed tomography (HR-pQCT)...
February 5, 2016: European Spine Journal
Colin J Anderson, Murray D Spruiell, Erin F Wylie, Caitlin M McGowan, Frederic W-B Deleyiannis, Nathan J Donaldson, Travis C Heare
PURPOSE: We present a surgical technique for chest wall reconstruction using custom-designed titanium implants developed for two female patients to provide both chest wall symmetry and adequate stability for staged breast reconstruction. METHODS: A retrospective review was performed for two adolescent female patients with large chest wall defects who underwent the described technique. The etiology of the chest wall deficiency was secondary to Poland's syndrome in one patient, and secondary to surgical resection of osteosarcoma in the other patient...
February 2016: Journal of Children's Orthopaedics
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