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https://www.readbyqxmd.com/read/28550416/optimal-suture-anchor-direction-in-arthroscopic-lateral-ankle-ligament-repair
#1
Ichiro Yoshimura, Tomonobu Hagio, Masahiro Noda, Kazuki Kanazawa, So Minokawa, Takuaki Yamamoto
PURPOSE: In this study, the distance between the insertion point of the suture anchors and posterior surface of the fibula during arthroscopic lateral ankle ligament repair was investigated on computed tomography (CT) images. The hypothesis of this study was that there is an optimal insertional direction of the suture anchor to avoid anchor-related complications. METHODS: One hundred eleven ankles of 98 patients who had undergone three-dimensional CT scans for foot or ankle disorders without deformity of the fibula were assessed (59 males, 52 females; median age 25...
May 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28550358/visualization-of-a-cam-type-femoroacetabular-impingement-while-squatting-using-image-matching-techniques-a-case-report
#2
Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondoh, Yasuharu Nakashima
The in vivo assessment of the three-dimensional (3D) kinematics of the hip in patients with femoroacetabular impingement (FAI) under weight-bearing conditions has not been previously reported. We evaluated the pre- and postoperative hip kinematics of a 34-year-old man, with a cam-type FAI while squatting, using image-matching techniques with measurement of the rim-neck distance. Post-osteochondroplasty, the α-angle improved from 51.0° to 35.5° and the head-neck offset ratio from 0.04 to 0.23. Coxalgia during squatting disappeared, and the Harris Hip Score improved from 79 to 92 at 1 year post-surgery...
May 27, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28547587/new-quantitative-radiographic-parameters-for-vertical-and-horizontal-instability-in-acromioclavicular-joint-dislocations
#3
Matthias A Zumstein, Philippe Schiessl, Benedikt Ambuehl, Lilianna Bolliger, Johannes Weihs, Martin H Maurer, Beat K Moor, Michael Schaer, Sumit Raniga
PURPOSE: The aim of this study was to identify the most accurate and reliable quantitative radiographic parameters for assessing vertical and horizontal instability in different Rockwood grades of acromioclavicular joint (ACJ) separations. Furthermore, the effect of projectional variation on these parameters was investigated in obtaining lateral Alexander view radiographs. METHODS: A Sawbone model of a scapula with clavicle was mounted on a holding device, and acromioclavicular dislocations as per the Rockwood classification system were simulated with the addition of horizontal posterior displacement...
May 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28532884/the-role-of-scapular-kinematics-in-patients-with-different-shoulder-musculoskeletal-disorders-a-systematic-review-approach
#4
REVIEW
Roshanak Keshavarz, Siamak Bashardoust Tajali, Seyed Mohsen Mir, H Ashrafi
This study aimed to identify the role of the scapula in shoulder musculoskeletal disorders (SMDs) and provided a systematic review of available studies in the field of scapular three-dimensional kinematics. We systematically searched 5 international databases, including Scopus, EMBASE, PubMed, CINAHL, PEDro, and Cochrane Library from June to September 2015. Twenty studies met the inclusion criteria and were retrieved in full paper. The selected studies were critically appraised independently by two researchers...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28530477/reliability-and-validity-of-an-acromion-marker-cluster-for-recording-scapula-posture-at-end-range-clavicle-protraction-retraction-elevation-and-depression
#5
Yaheli Bet-Or, Wolbert van den Hoorn, Venerina Johnston, Shaun P O'Leary
Acromion Marker Cluster (AMC) methods have been shown to accurately track scapula motion during humeral elevation below 90°, however, their accuracy has not been assessed in shoulder girdle motion such as clavicle protraction, retraction, elevation and depression independent of humeral movement. The aim of this study was to examine the reliability and validity of the AMC method to record scapula orientation at end range clavicle protraction, retraction, elevation and depression. The right scapulae of twenty-two female and twenty male asymptomatic volunteers were assessed with an AMC and Scapula Locator (SL) method during end range clavicle protraction, retraction, elevation and depression (without humeral elevation) using an eight-camera 3D movement registration system...
May 22, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28526568/analysis-of-complications-following-posterior-vertebral-column-resection-for-the-treatment-of-severe-angular-kyphosis-greater-than-100%C3%A2
#6
Yunus Atici, Mehmet Bulent Balioglu, Deniz Kargin, Muhammed Mert, Akif Albayrak, Mehmet Akif Kaygusuz
OBJECTIVE: The aim of this study was to evaluate the complications, efficacy and safety of posterior vertebral column resection (PVCR) in severe angular kyphosis (SAK) greater than 100°. METHODS: The medical records of 17 patients (mean age 17.9 (range, 9-27) years) with SAK who underwent PVCR, were reviewed. Mean follow-up period was 32.2 (range, 24-64) months. Diagnosis of the patients included congenital kyphosis in 11 patients, post-tuberculosis kyphosis in 3 patients and neurofibromatosis in 3 patients...
May 16, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28522402/prophylactic-vertebral-cement-augmentation-at-the-uppermost-instrumented-vertebra-and-rostral-adjacent-vertebra-for-the-prevention-of-proximal-junctional-kyphosis-and-failure-following-long-segment-fusion-for-adult-spinal-deformity
#7
George M Ghobrial, Daniel G Eichberg, John Paul G Kolcun, Karthik Madhavan, Nathan H Lebwohl, Barth A Green, Joseph P Gjolaj
BACKGROUND CONTEXT: Proximal junctional kyphosis (PJK) and proximal junctional failure (PJF) are common problems after long segment (>5 levels) thoracolumbar instrumented fusions in the treatment of adult spinal deformity (ASD). No specific surgical strategy has definitively been shown to lower the risk of PJK as the result of a multifactorial etiology. PURPOSE: To assess the incidence of PJK and PJF in patients treated with prophylactic polymethylmethacrylate(PMMA) cement augmentation at the uppermost instrumented vertebrae(UIV) and rostral adjacent vertebrae(UIV+1)...
May 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28511802/-a-continuous-series-of-27-adult-patients-treated-for-l5-s1-isthmic-spondylolisthesis-by-combined-approach-clinical-and-radiological-outcomes-at-1-year-follow-up
#8
N Koné, E Freitas Olim, P Coloma, A Rusconi, L Chenin, O Sy, I S Souaré, C Barrey
Through this single-center consecutive prospective study, we evaluated the results of a combined approach for L5-S1 isthmic spondylolisthesis, using a polyetheretherketone (PEEK) interbody lordotic cage during anterior approach and pedicle screw-based posterior fixation. Between 2010 and 2014, 27 adult patients were treated for L5-S1 isthmic spondylolisthesis (high and low grades) by a combined approach with a minimum follow-up of one year. Clinical outcome was assessed before surgical treatment and at four months and one year after surgery by: VAS, Oswestry Index (ODI) and Rolland-Morris scores...
May 13, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28503534/effects-of-three-spinal-stabilization-techniques-on-activation-and-thickness-of-abdominal-muscle
#9
Byeong-Jo Kim, Su-Kyoung Lee
In this study, we examine the thickness of the abdominal muscle and its activity during the performance of the three drawing-in methods. The subjects were 20 healthy male and female students in their 20s. Using ultrasonography and electromyography, the experimenter measured the thickness of the transversus abdominis (TrA) muscle, internal oblique (IO) muscle and external oblique (EO) muscle. The ultrasonography measurements for the drawing-in manoeuver (DI), abdominal bracing, and posterior pelvic tilt (PT) techniques were 0...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28500959/biomechanical-evaluation-of-implant-supported-prosthesis-with-various-tilting-implant-angles-and-bone-types-in-atrophic-maxilla-a-finite-element-study
#10
Zeynep Gümrükçü, Yavuz Tolga Korkmaz, Fatih Mehmet Korkmaz
BACKGROUND AND OBJECTIVE: The purpose of this study is to evaluate and compare bone stress that occurs as a result of using vertical implants with simultaneous sinus augmentation with bone stress generated from oblique implants without sinus augmentation in atrophic maxilla. METHODS: Six, three-dimensional (3D) finite element (FE) models of atrophic maxilla were generated with SolidWorks software. The maxilla models were varied for two different bone types. Models 2a, 2b and 2c represent maxilla models with D2 bone type...
May 4, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28489740/percutaneous-pinning-after-prolonged-skeletal-traction-with-the-hip-in-a-flexed-position-for-unstable-slipped-capital-femoral-epiphysis-a-case-series-of-11-patients
#11
Masaki Matsushita, Kenichi Mishima, Kohji Iwata, Tadashi Hattori, Naoki Ishiguro, Hiroshi Kitoh
BACKGROUND: Unstable slipped capital femoral epiphysis (SCFE) has a relatively high risk of avascular necrosis of the femoral head. Standard treatment for unstable SCFE is still controversial. We reviewed unstable SCFE case series treated with the standardized protocol, which consisted of percutaneous pinning after prolonged skeletal traction. METHODS: Our treatment regimen for unstable SCFE patients included 1 week or more of skeletal traction with the hip in a flexed position of 45 degrees, and subsequent percutaneous pinning after unintentional reduction...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28478902/effects-of-short-malunion-of-the-clavicle-on-in-vivo-scapular-kinematics
#12
DooSup Kim, DongWoo Lee, YoungHwan Jang, JunSeop Yeom, Scott A Banks
BACKGROUND: Short malunion of the clavicle after fracture can change scapular kinematics and alter clinical outcome. However, the effects of malunion on kinematics and outcomes remains poorly understood because there have been no in vivo studies measuring changes during active motion with malunion. This study aimed to measure and to compare in vivo 3-dimensional (3D) scapular kinematics between normal shoulders and shoulders with short malunion using 3D-2-dimensional model image registration techniques...
May 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28472514/evaluating-atlantoaxial-dislocation-based-on-cartesian-coordinates-proposing-a-new-definition-and-its-impact-on-assessment-of-congenital-torticollis
#13
Jayesh Sardhara, Sanjay Behari, Pavaman Sindgikar, Arun Kumar Srivastava, Anant Mehrotra, Kuntal Kanti Das, Kamlesh Singh Bhaisora, Rabi N Sahu, Awadhesh K Jaiswal
BACKGROUND: Conventional 2-dimensional (2-D) definition of atlantoaxial dislocation (AAD) is inadequate for coexisting 3-D displacements. OBJECTIVE: To prospectively classify AAD and its related abnormalities along 3 Cartesian coordinates and assess their association with torticollis. METHODS: One hundred and fifty-four patients with congenital AAD were prospectively classified according to their C1-2 displacement along 3 Cartesian coordinates utilizing 3-D multiplanar CT...
May 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28457613/flanged-intrascleral-intraocular-lens-fixation-with-double-needle-technique
#14
Shin Yamane, Shimpei Sato, Maiko Maruyama-Inoue, Kazuaki Kadonosono
PURPOSE: To report the clinical outcomes of a new technique for transconjunctival intrascleral fixation of an intraocular lens (IOL). DESIGN: Prospective, noncomparative, interventional case series. PARTICIPANTS: One hundred eyes of 97 consecutive patients with aphakia, dislocated IOL, or subluxated crystalline lens who underwent posterior chamber sutureless implantation of an IOL were studied. METHODS: Two angled incisions parallel to the limbus were made by 30-gauge thin-wall needles...
April 27, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28456859/a-comparison-of-visual-recognition-of-the-laryngopharyngeal-structures-between-high-and-standard-frame-rate-videos-of-the-fiberoptic-endoscopic-evaluation-of-swallowing
#15
Mehran Alizadeh Aghdam, Makoto Ogawa, Toshihiko Iwahashi, Kiyohito Hosokawa, Chieri Kato, Hidenori Inohara
The purpose of this study was to assess whether or not high frame rate (HFR) videos recorded using high-speed digital imaging (HSDI) improve the visual recognition of the motions of the laryngopharyngeal structures during pharyngeal swallow in fiberoptic endoscopic evaluation of swallowing (FEES). Five healthy subjects were asked to swallow 0.5 ml water under fiberoptic nasolaryngoscopy. The endoscope was connected to a high-speed camera, which recorded the laryngopharyngeal view throughout the swallowing process at 4000 frames/s (fps)...
April 29, 2017: Dysphagia
https://www.readbyqxmd.com/read/28451859/effect-of-correction-surgery-for-cervical-kyphosis-on-compensatory-mechanisms-in-overall-spinopelvic-sagittal-alignment
#16
Hiroshi Miyamoto, Kazuki Hashimoto, Terumasa Ikeda, Masao Akagi
PURPOSE: Progression of kyphotic deformity at the middle/lower cervical spine can cause difficulty with horizontal gaze, so compensation at other spinopelvic parts may occur. However, the precise mechanism remains unclear. The present study investigated the effect of correction surgery for cervical kyphosis on the compensatory mechanisms in overall spinopelvic sagittal alignment. METHODS: Forty-one patients, comprising 23 males and 18 females (mean age 67 years), underwent correction surgery for cervical kyphosis using the posterior screw-rod system...
April 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28449962/posterior-versus-three-column-osteotomy-for-late-correction-of-residual-coronal-deformity-in-patients-with-previous-fusions-for-idiopathic-scoliosis
#17
Stephen J Lewis, Sam G Keshen, So Kato, Aaron M Gazendam
STUDY DESIGN: Retrospective case series. OBJECTIVE: To compare the early results of posterior column (PCO) and three-column (3CO) osteotomies performed in patients with previously fused idiopathic scoliosis and review their abilities to achieve coronal correction of residual deformities. SUMMARY OF BACKGROUND DATA: Residual deformity of previously fused AIS can accelerate adjacent segment degeneration secondary to lowest instrumented vertebra (LIV) tilt and rotation...
May 2017: Spine Deformity
https://www.readbyqxmd.com/read/28441306/orientation-of-the-upper-most-instrumented-segment-influences-proximal-junctional-disease-following-adult-spinal-deformity-surgery
#18
Renaud Lafage, Breton G Line, Sachin Gupta, Barthelemy Liabaud, Frank Schwab, Justin S Smith, Jeffrey L Gum, Christopher P Ames, Richard Hostin, Gregory M Mundis, Han Jo Kim, Shay Bess, Eric Klineberg, Virginie Lafage
STUDY DESIGN: Retrospective review of a prospective database. OBJECTIVE: To define the role of sagittal orientation of the construct at the upper instrumented levels in the development of proximal junctional kyphosis (PJK) in adult spinal deformity (ASD) patients. SUMMARY OF BACKGROUND DATA: PJK following ASD surgery remains challenging. The final alignment of the upper instrumented vertebral segments has been proposed as a risk factor for PJK, but has not been fully investigated...
April 24, 2017: Spine
https://www.readbyqxmd.com/read/28426631/directional-changes-in-tissue-reflectivity-may-influence-flow-detection-on-optical-coherence-tomography-angiography
#19
Rosa Dolz-Marco, K Bailey Freund
PURPOSE: To determine if directional or anatomical changes in tissue reflectivity of Henle fiber layer (HFL) may influence flow detection on optical coherence tomography angiography (OCT-A). METHODS: Cross-sectional analysis of consecutive cases undergoing OCT-A. Directional changes in visualization of HFL were either produced manually by moving the beam entrance within the pupil or observed occurring naturally because of tilting of the OCT line-scan within a myopic staphyloma...
April 19, 2017: Retina
https://www.readbyqxmd.com/read/28425054/can-a-three-component-prosthesis-be-used-for-conversion-of-painful-ankle-arthrodesis-to-total-ankle-replacement
#20
Markus Preis, Travis Bailey, Lucas S Marchand, Alexej Barg
BACKGROUND: In patients with painful ankle arthrodesis, the surgical treatment is challenging, and may include takedown of ankle arthrodesis and conversion to a total ankle replacement (TAR). This procedure is technically demanding given the altered anatomy after arthrodesis. Few studies have evaluated TAR in the setting of prior arthrodesis. QUESTIONS/PURPOSES: (1) What intraoperative and perioperative complications were observed in patients who underwent conversion of an ankle arthrodesis to a TAR? (2) Was durable fixation achieved at short term, and what was the alignment of the components? (3) What subsequent surgical procedures were performed, including revisions? (4) What improvements were observed in pain, tibiotalar range of motion (ROM), and quality of life? METHODS: Between January 2007 and December 2014, 18 patients with a painful ankle arthrodesis underwent conversion to TAR at our tertiary referral center...
April 19, 2017: Clinical Orthopaedics and related Research
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