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posterior tilt

Hiedar Alyami, Ali M Albarrati
OBJECTIVE: This study's objective was to discover whether a difference exists in four postural angles while performing a typing task on a laptop and a desktop computer. METHOD: Twenty healthy participants performed a 5-min typing task on each computer. RESULTS: Statistically significant differences for all angles were found when comparing sitting at the desktop computer with sitting at the laptop. Neck angle (p < .0005), head tilt (p < ...
November 2016: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
Alexander A Theologis, Gregory M Mundis, Stacie Nguyen, David O Okonkwo, Praveen V Mummaneni, Justin S Smith, Christopher I Shaffrey, Richard Fessler, Shay Bess, Frank Schwab, Bassel G Diebo, Douglas Burton, Robert Hart, Vedat Deviren, Christopher Ames
OBJECTIVE The aim of this study was to evaluate the utility of supplementing long thoracolumbar posterior instrumented fusion (posterior spinal fusion, PSF) with lateral interbody fusion (LIF) of the lumbar/thoracolumbar coronal curve apex in adult spinal deformity (ASD). METHODS Two multicenter databases were evaluated. Adults who had undergone multilevel LIF of the coronal curve apex in addition to PSF with L5-S1 interbody fusion (LS+Apex group) were matched by number of posterior levels fused with patients who had undergone PSF with L5-S1 interbody fusion without LIF (LS-Only group)...
October 21, 2016: Journal of Neurosurgery. Spine
Panos Papaspyridakos, Yong-Jeong Kim, Matthew Finkelman, Khaled El-Rafie, Hans-Peter Weber
PURPOSE: The primary aim of this study was to assess the accuracy of different splinting materials to make implant cast verification jigs. The secondary aim was to assess the effect of 20° implant angulation on the accuracy of casts. MATERIALS AND METHODS: An edentulous mandibular arch with five internal connection tissue level implants served as control. The three implants in the anterior region were parallel to each other and the two implants in the posterior region were distally tilted 20° bilaterally...
October 21, 2016: Journal of Esthetic and Restorative Dentistry
Karl Stoffel, Ivan Zderic, Florian Gras, Christoph Sommer, Ursula Eberli, David Mueller, Martin Oswald, Boyko Gueorguiev
OBJECTIVES: To evaluate the biomechanical performance of Femoral Neck System (FNS) in comparison to established methods for fixation of femoral neck fractures in a cadaveric model. METHODS: Twenty pairs of fresh-frozen human cadaveric femora were instrumented either with DHS-Screw, DHS-Blade, 3CS or with FNS in a partially paired design. The specimens were randomized to two paired treatment groups based on the BMD, namely DHS-Screw/DHS-Blade and FNS/3CS. A reduced unstable femoral neck fracture with postero-caudal comminution, AO/OTA 31-B2...
October 13, 2016: Journal of Orthopaedic Trauma
Melinda Y Chang, Andrew Shin, Joseph Park, Aaron Nagiel, Robert A Lalane, Steven D Schwartz, Joseph L Demer
PURPOSE: To ascertain deformation of the optic nerve head (ONH) and peripapillary tissues caused by horizontal duction. DESIGN: Prospective, experimental study. METHODS: Optical coherence tomography of the ONH region was performed in 23 eyes of twelve normal volunteers in central gaze and increasing (10, 20, and 30°) adduction and abduction. Main outcome measures were changes from central gaze in the configuration of the ONH and peripapillary tissues in eccentric gazes...
October 14, 2016: American Journal of Ophthalmology
Timothy G Baumer, Derek Chan, Veronica Mende, Jack Dischler, Roger Zauel, Marnix van Holsbeeck, Daniel S Siegal, George Divine, Vasilios Moutzouros, Michael J Bey
BACKGROUND: Physical therapy (PT) is often prescribed for patients with rotator cuff tears. The extent to which PT influences strength, range of motion (ROM), and patient-reported outcomes has been studied extensively, but the effect of PT on in vivo joint kinematics is not well understood. PURPOSE: To assess the influence of symptomatic rotator cuff pathology and the effects of PT on shoulder motion, strength, and patient-reported outcomes. STUDY DESIGN: Controlled laboratory study...
September 2016: Orthopaedic Journal of Sports Medicine
Kazuhiro Endo, Junichiro Hamada, Kazuaki Suzuki, Yoshihiro Hagiwara, Takayuki Muraki, Hiroshi Karasuno
PURPOSES: It has been reported that the amount of posterior tilt and upward rotation in scapular motions decreases with aging. The purposes of the current study were to investigate age related scapular motion regression and scapular restriction in patients with idiopathic frozen shoulder (IFS). METHODS: The groups were recruited as follows: two groups of 50 asymptomatic subjects aged in their twenties and fifties, and 56 patients with IFS. We passively moved the scapula toward 8 directions: elevation/depression; upward/downward rotation; external/internal rotation; and anterior/posterior tilt...
2016: Open Orthopaedics Journal
Leanda McKenna, Xavier Cornwall, Sian Williams
BACKGROUND: Scapular orientation may be influenced by static body posture (sitting and standing) and contribute to the development of shoulder pain. Therefore, a consistent body posture should be considered when assessing scapular orientation as well as enhancing optimal scapular positioning. OBJECTIVE: To determine whether there are differences in scapular orientation between standing, neutral sitting, and habitual sitting, while adjusting for spinal posture. DESIGN: A single group randomized repeated measures study...
October 6, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
Jacob Matz, James L Howard, David J Morden, Steven J MacDonald, Matthew G Teeter, Brent A Lanting
BACKGROUND: Patellofemoral joint biomechanics contribute to anterior knee pain, instability, and dysfunction following total knee arthroplasty (TKA). Information about specific factors leading to anterior knee pain and dysfunction is currently limited. Changes in patellofemoral joint offset (PFO) refers to a mismatch between the preoperative and postoperative anteroposterior geometry of the patellofemoral joint. It remains unclear whether these changes lead to adverse outcomes in TKA...
September 14, 2016: Journal of Arthroplasty
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
John J Elias, Michael J Kelly, Kathryn E Smith, Kenneth A Gall, Jack Farr
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction is performed to prevent recurrent instability, but errors in femoral fixation can elevate graft tension. HYPOTHESIS: Errors related to femoral fixation will overconstrain the patella and increase medial patellofemoral pressures. STUDY DESIGN: Controlled laboratory study. METHODS: Five knees with patellar instability were represented with computational models...
September 2016: Orthopaedic Journal of Sports Medicine
Jean-Claude Bernard, Eric Berthonnaud, Nuria Rodriguez-Martinez, Julie Deceuninck, Emmanuelle Chaleat-Valayer
OBJECTIVE: Three-dimensional imaging was performed to identify if Lenke 1A curves could be reclassified in subgroups to improved orthopedic or surgical treatment of adolescent idiopathic scoliosis. It seems that multitude of 3D reconstructions can exist in Lenke 1A curves. With his classification Lenke introduces new parameters in radiographic analysis of idiopathic scoliosis like frontal lumbar and thoracic sagittal modifiers. Scoliosis is defined as a three dimensional deformity in frontal, sagittal and horizontal plane...
September 2016: Annals of Physical and Rehabilitation Medicine
Nadine Pellegrini
OBJECTIVE: To study seated postural control in neuromuscular disorder. MATERIALS/PATIENTS AND METHODS: We conducted a retrospective observational cohort study of 130 neuromuscular adult patients having a positioning wheelchair consultation in Foundation of Garches. The assessment is done with the seated postural control measure for adults. RESULTS: Most of the patients had severe intensity illness, only10% were walking and 29% were with tracheostomial ventilation...
September 2016: Annals of Physical and Rehabilitation Medicine
S Y Lee, S-S Kwon, M S Park, M K Chung, K B Kim, S Koo, K M Lee
This study aimed to investigate the relationship between bone morphology and injured ligaments on imaging studies and laxity on ankle stress radiographs in patients with lateral ankle instability. In total, 115 patients who had undergone ankle MRI, ankle radiography, and stress radiography were included. Distal tibial articular surface angle, bimalleolar tilt, medial and lateral malleolar relative length, medial malleolar slip angle, anterior inclination of the tibia, and fibular position were measured on ankle radiographs...
September 27, 2016: International Journal of Sports Medicine
Sun-Mi Cho, Sung-Hwan Choi, Sang-Jin Sung, Hyung-Seog Yu, Chung-Ju Hwang
OBJECTIVE: The aim of this study was to determine the optimal loading conditions for pure intrusion of the six maxillary anterior teeth with miniscrews according to alveolar bone loss. METHODS: A three-dimensional finite element model was created for a segment of the six anterior teeth, and the positions of the miniscrews and hooks were varied after setting the alveolar bone loss to 0, 2, or 4 mm. Under 100 g of intrusive force, initial displacement of the individual teeth in three directions and the degree of labial tilting were measured...
September 2016: Korean Journal of Orthodontics
Michael M Tymko, Caroline A Rickards, Rachel J Skow, Nathan C Ingram-Cotton, Michael K Howatt, Trevor A Day
Steady-state tilt has no effect on cerebrovascular reactivity to increases in the partial pressure of end-tidal carbon dioxide (PETCO2). However, the anterior and posterior cerebral circulations may respond differently to a variety of stimuli that alter central blood volume, including lower body negative pressure (LBNP). Little is known about the superimposed effects of head-up tilt (HUT; decreased central blood volume and intracranial pressure) and head-down tilt (HDT; increased central blood volume and intracranial pressure), and LBNP on cerebral blood flow (CBF) responses...
September 2016: Physiological Reports
Alva H Bdaiwi, Tanya Anne Mackenzie, Lee Heerington, Ian Horlsey, Ann Cools
CONTEXT: Compromise to the acromio-humeral distance has been reported in subjects with subacromial impingement syndrome when compared to healthy subjects. In clinical practice patients are taped with the intention of altering scapular position and influencing the acromio-humeral distance. However, research to determine the effects of taping on acromio-humeral distance is exiguous. OBJECTIVES: To evaluate the effect of ridged taping techniques to increase posterior scapular tilt and upward scapular rotation on the acromio-humeral distance...
August 24, 2016: Journal of Sport Rehabilitation
Helga T Tucci, Lilian R Felicio, Kevin J McQuade, Debora Bevilaqua-Grossi, Paula Maria Ferreira Camarini, Anamaria S Oliveira
CONTEXT: Closed Kinetic Chain Upper Extremity Stability Test (CKCUES test) is a functional test for the upper extremity performed in the push-up position, where individuals support their body weight on one hand placed on the ground and swing the opposite hand until touching the hand on the ground, then switch hands and repeat the process as fast as possible for fifteen seconds. OBJECTIVE: To study scapular kinematics and kinetic measures during CKCUES test for three different distances between hands...
August 24, 2016: Journal of Sport Rehabilitation
Toam Katz, Johannes Steinberg, Vasyl Druchkiv, Stephan J Linke, Andreas Frings
The purpose of this study was to analyze ocular residual astigmatism (ORA) before and after implantation of two different optical types of non-toric multifocal intraocular lenses (MIOL) in pre-cataract patients. This retrospective cohort study analyzed 72 eyes from 72 consecutive patients after MIOL surgery . To investigate magnitude and axis of astigmatic changes, the concepts of true corneal astigmatism and Alpins vector method were applied. There were no statistically significant between-group differences prior to surgery...
September 13, 2016: International Ophthalmology
Jung Hwan Lee, Sang-Ho Lee
OBJECTIVE: To evaluate characteristics of static and dynamic parameters in patients with degenerative flat back (DFB) and to compare degree of their improvement between successful and unsuccessful surgical outcome groups. METHODS: Forty-seven patients with DFB were included who took whole spine X-ray and three-dimensional motion analysis before and 6 months after corrective surgery. Forty-four subjects were selected as a control group. As static parameters, thoracic kyphosis (TK), thoracolumbar junction (TLJ), lumbar lordosis (LL), pelvic incidence (PI), sacral slope (SS), and pelvic tilt (PT) were measured...
August 2016: Annals of Rehabilitation Medicine
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