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https://www.readbyqxmd.com/read/29774956/cement-interface-and-bone-stress-in-total-hip-arthroplasty-relationship-to-head-size
#1
Teresa Alonso-Rasgado, Jose F Del-Valle-Mojica, David Jimenez-Cruz, Colin G Bailey, Tim N Board
The use of larger prosthetic femoral heads in total hip arthroplasty (THA) has increased considerably in recent years in response to the need to improve joint stability and reduce risk of dislocation. However, data suggests larger femoral heads are associated with higher joint failure rates. For cemented implants, ensuring the continued integrity of the cement mantle is key to long term fixation. This paper describes an investigation into the effect of variation in femoral head size on stresses in the acetabular cement mantle and pelvic bone...
May 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29754982/computed-tomography-techniques-help-understand-wear-patterns-in-retrieved-total-knee-arthroplasty
#2
Arianna Cerquiglini, Johann Henckel, Harry S Hothi, Lorenzo Dall'Ava, Paul Shearing, Michael T Hirschmann, Alister J Hart
BACKGROUND: Suboptimal total knee arthroplasty (TKA) position of both femoral and tibial components is thought to be linked with poor clinical outcomes, polyethylene wear and the "unexplained" painful knee arthroplasty. The aim of this study was to better understand the effect of implant orientation on knee implant performance. METHODS: We analyzed 30 retrieved contemporary TKA implants. Implant positioning measurements in the coronal plane were made prior to revision using a diagnostic algorithm, based on 3D computed tomography (CT) images...
April 16, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29731269/digital-health-and-advanced-technology-in-arthroplasty
#3
EDITORIAL
Mark I Froimson
No abstract text is available yet for this article.
March 13, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29706732/reliability-of-metacarpal-subsidence-measurements-after-thumb-carpometacarpal-joint-arthroplasty
#4
Andrew J Miller, Christopher M Jones, Dennis P Martin, Fred E Liss, Jack Abboudi, William H Kirkpatrick, Pedro K Beredjiklian
Background: Thumb metacarpal subsidence after trapeziectomy can affect clinical function over time. Methods for measuring subsidence after trapeziectomy have been described, and they rely on an intact thumb metacarpal or proximal phalanx for measurement. The authors evaluated the reliability and reproducibility of measuring the trapezial space ratio, using previously described methods. In addition, the authors evaluated a new method that measures trapezial space on a posteroanterior (PA) hand/wrist radiograph that does not rely on an intact thumb metacarpal or proximal phalanx for measurement, which can often be altered by degenerative changes or in cases in which metacarpophalangeal arthrodesis is performed during carpometacarpal (CMC) joint arthroplasty to correct excessive hyperextension...
April 2018: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/29703336/disease-burden-complication-rates-and-health-care-costs-of-heparin-induced-thrombocytopenia-in-the-usa-a-population-based-study
#5
Binod Dhakal, Lisa Baumann Kreuziger, Lisa Rein, Ariel Kleman, Raphael Fraser, Richard H Aster, Parameswaran Hari, Anand Padmanabhan
BACKGROUND: Heparin-induced thrombocytopenia can be a life-threatening and limb-threatening complication of heparin therapy. Incidence and complication rates of this condition have been extrapolated from studies with modest sample sizes, and despite the availability of therapeutic interventions the outcomes of heparin-induced thrombocytopenia are not well understood. We aimed to estimate disease burden, complication rates, and costs of heparin-induced thrombocytopenia in the USA. METHODS: In this population-based study we analysed data from 2009 to 2013 from the Nationwide (National) Inpatient Sample (NIS), a large, all-payer inpatient health-care database in the USA...
May 2018: Lancet Haematology
https://www.readbyqxmd.com/read/29662778/comparisons-of-slice-encoding-metal-artifact-correction-and-view-angle-tilting-magnetic-resonance-imaging-and-traditional-digital-radiography-in-evaluating-chronic-hip-pain-after-total-hip-arthroplasty
#6
Yimin Ma, Panli Zuo, Mathias Nittka, Xiaoguang Cheng, Hongyi Shao, Chen Wang
Purpose: The aims of this study were (1) to compare the areas of metal-induced artifacts and definition of periprosthetic structures between patients scanned with the slice-encoding metal artifact correction and view-angle tilting (SEMAC-VAT) turbo-spin-echo (TSE) prototype and those scanned with the standard TSE magnetic resonance (MR) sequences and (2) to further clarify the superiority of the SEMAC-VAT MR imaging technique at detecting lesions in patients after total hip arthroplasty (THA), compared with digital radiography (DR)...
January 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29625640/microvascular-toe-joint-for-proximal-interphalangeal-joint-replacement-indications-technique-and-outcomes
#7
REVIEW
Ryan D Katz, James P Higgins
Microvascular toe interphalangeal joint transfer can serve as a means of autogenous digit proximal interphalangeal joint (PIPJ) arthroplasty. Among surgical options for treating dysfunctional, absent, or destroyed PIPJs, free toe joint transfer is the most technically challenging and carries the greatest donor site cost to patients. Despite drawbacks, free toe joint transfer is a valuable tool with considerable advantages over conventional arthroplasty in the appropriate clinical setting. Particular advantages include lifelong durability, coronal plane stability, low infection risk, and growth potential in skeletally immature patients...
May 2018: Hand Clinics
https://www.readbyqxmd.com/read/29595086/impact-of-multi-versus-single-finger-proximal-interphalangeal-joint-arthroplasty-analysis-of-249-fingers-treated-in-15-years
#8
Jason J Srnec, Eric R Wagner, Marco Rizzo
We retrospectively reviewed and compared the outcomes and complications associated with 81 single digit and 168 multi-digit proximal interphalangeal joint arthroplasties performed from 1998 to 2012 in 136 patients. Clinical outcomes were assessed with an average follow-up of 5.3 years for single digit and 5.9 years for multi-digit proximal interphalangeal joint arthroplasty. Comparing single versus multi-digit proximal interphalangeal joint arthroplasty, the reoperation-free survival was 67% and 68% at 5 years and 56% and 67% at 10 years, respectively...
January 1, 2018: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29588123/home-health-services-are-not-required-for-select-total-hip-arthroplasty-candidates-assessment-and-supplementation-with-an-electronic-recovery-application
#9
Roy I Davidovitch, Afshin A Anoushiravani, James E Feng, Kevin K Chen, Raj Karia, Ran Schwarzkopf, Richard Iorio
BACKGROUND: At our institution, all postoperative total hip arthroplasty (THA) candidates have received home health services (HHS), consisting of visiting nurses, physical and occupational therapists. However, with a more technologically inclined patient population, electronic patient rehabilitation applications (EPRAs) can be used to deliver perioperative care at the comfort of the patient's home. The aim of this study is to investigate the clinical utility and economic burden associated with digital rehabilitation applications in primary THA recipients...
February 21, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29580744/anthropometric-study-of-the-radiocapitellar-joint
#10
Matthias Vanhees, Dave R Shukla, James S Fitzsimmons, Kai-Nan An, Shawn W O'Driscoll
PURPOSE: There is scant knowledge about the relationship between the size of the radial head and the size of the capitellum. Also, no data exist comparing the size of the capitellum between the left and the right elbow. METHODS: Eight pairs of elbows and 12 single elbows from fresh-frozen cadavers were obtained for this study. The vertical height and anterior width of the capitellum were measured with digital calipers. Four different measurements were performed at the radial head: longest outer diameter, shortest outer diameter, the long dish diameter, and short dish diameter...
March 23, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29556687/-correction-of-posttraumatic-deformities-of-the-distal-tibia-with-focal-dome-osteotomy
#11
Thomas Rosteius, Hinnerk Baecker, Thomas Armin Schildhauer, Dominik Seybold, Jan Geßmann
BACKGROUND: Supramalleolar deformities require surgical correction to avoid posttraumatic osteoarthrosis of the knee or ankle joint and to prevent definitive treatment options, such as total ankle arthroplasty or arthrodesis of the ankle joint. Various methods for the operative correction of supramalleolar deformities have been described in the literature. OBJECTIVE: What results can be achieved with focal dome osteotomy to correct posttraumatic supramalleolar deformities? MATERIAL AND METHODS: A total of 10 patients (mean age 37 years) with a supramalleolar posttraumatic deformity were treated by focal dome osteotomy...
March 19, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29419726/the-effect-of-door-opening-on-positive-pressure-and-airflow-in-operating-rooms
#12
Mitchell C Weiser, Shai Shemesh, Darwin D Chen, Michael J Bronson, Calin S Moucha
INTRODUCTION: Door openings and increased foot traffic in operating rooms (ORs) during total joint arthroplasty are thought to increase the risk of surgical site infection. METHODS: Digital manometers were used to collect pressure data during off-hours at the thresholds of both the outer door (ie, the door to the common OR hallway) and the inner substerile door, which opens to the substerile hallway, of six empty ORs used for total joint arthroplasty. Airflow patterns were visualized with smoke studies to determine whether outside air entered the ORs during single or multiple door openings...
March 1, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29409422/results-of-the-volar-approach-in-proximal-interphalangeal-joint-arthroplasty
#13
Scott F M Duncan, Anthony A Smith, Kevin J Renfree, Ross M Dunbar, Marianne V Merritt
BACKGROUND: Most hand surgeons use a dorsal approach for proximal interphalangeal (PIP) joint implant arthroplasty. However, a volar approach offers the advantage of no disturbance to the extensor mechanism, thus allowing early initiation of active range of motion. We examined our results in patients who underwent PIP joint arthroplasty via a volar approach. METHODS: Using a retrospective chart review, we evaluated the outcomes of patients undergoing PIP joint arthroplasty through a volar approach between 2001 and 2005 by 3 fellowship-trained hand surgeons at our institution...
March 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29406344/digital-radiography-in-total-hip-arthroplasty-technique-and-radiographic-results
#14
Brad L Penenberg, Sanjum P Samagh, Sean S Rajaee, Antonia Woehnl, William W Brien
BACKGROUND: Obtaining the ideal acetabular cup position in total hip arthroplasty remains a challenge. Advancements in digital radiography and image analysis software allow the assessment of the cup position during the surgical procedure. This study describes a validated technique for evaluating cup position during total hip arthroplasty using digital radiography. METHODS: Three hundred and sixty-nine consecutive patients undergoing total hip arthroplasty were prospectively enrolled...
February 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29398996/scaling-marker-position-determines-the-accuracy-of-digital-templating-for-total-hip-arthroplasty
#15
Austin J Ramme, Nina D Fisher, Jonathan Egol, Gregory Chang, Jonathan M Vigdorchik
Background: Digital templating systems foster patient-specific measurements for preoperative planning. Questions/Purposes: We aim (1) to verify the accuracy of a templating system, (2) to describe the effects of scaling marker position on the accuracy of digital templating of the hip, and (3) to provide a practical guide for scaling marker position using patient body mass index (BMI). Methods: A scaling sphere was placed in five positions along the anterior-posterior axis of an acetabular implant and pelvis phantom, and x-rays were obtained...
February 2018: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/29379253/templating-in-uncemented-tha-on-accuracy-and-postoperative-leg-length-discrepancy
#16
Nils J Strøm, Olav Reikerås
Purpose: This study examines the accuracy of digital templating in uncemented total hip arthroplasty (THA), i.e., whether the templated components where actually inserted during surgery. The surgical outcome was evaluated on the basis of limb length equality. Methods: We retrospectively examined digital x-rays of 41 patients scheduled for uncemented THA. These were templated using templating software. The template was compared to the surgical choice of implant registered in the patients' journal...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29366729/accuracy-of-digital-tomosynthesis-with-metal-artifact-reduction-for-detecting-osteointegration-in-cementless-hip-arthroplasty
#17
Shengjie Guo, Hao Tang, Yixin Zhou, Yong Huang, Hongyi Shao, Dejin Yang
BACKGROUND: Cementless hip arthroplasty is increasingly gaining popularity worldwide. Radiologic identification of osteointegration is key to confirming biologic fixation. We conducted the study reported here to determine the sensitivity and specificity of digital tomosynthesis with metal artifact reduction (TMAR), radiography, and conventional computed tomography in detecting osteointegration in cementless hip arthroplasty. METHODS: We prospectively included data for 24 patients who underwent revision hip arthroplasty in our hospital, with 13 femoral and 14 acetabular cementless components retrieved that contained solid evidence of biologic fixation...
December 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29355741/do-screws-and-screw-holes-affect-osteolysis-in-cementless-cups-using-highly-crosslinked-polyethylene-a-7-to-10-year-follow-up-case-control-study
#18
N Taniguchi, T Jinno, R Takada, D Koga, T Ando, A Okawa, H Haro
BACKGROUND: The use of screws and the presence of screw holes may cause acetabular osteolysis and implant loosening in cementless total hip arthroplasty (THA) using conventional polyethylene. In contrast, this issue is not fully understood using highly crosslinked polyethylene (HXLPE), particularly in large comparative study. Therefore, we performed a case-control study to assess the influence of screw usage and screw holes on: (1) implant fixation and osteolysis and (2) polyethylene steady-state wear rate, using cases with HXLPE liners followed up for 7-10 years postoperatively...
January 30, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29282486/patient-specific-instrumentation-in-oxford-unicompartmental-knee-arthroplasty-is-reliable-and-accurate-except-for-the-tibial-rotation
#19
B Kerens, A M Leenders, M G M Schotanus, B Boonen, W E Tuinebreijer, P J Emans, B Jong, N P Kort
PURPOSE: Patient-specific instrumentation (PSI) is a technique to plan and position the prosthesis components in unicompartmental knee arthroplasty (UKA) surgery. This study assesses whether the definitive component position in the frontal, sagittal and axial plane is according to the preoperative plan, based on the hypothesis that PSI is accurate. METHODS: Twenty-six patients who had PSI Oxford UKA surgery were included prospectively. The component position in vivo was determined with a postoperative CT-scan and compared with the planned component position using MRI-based digital 3D imaging...
December 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29229238/effectiveness-of-an-automated-digital-remote-guidance-and-telemonitoring-platform-on-costs-readmissions-and-complications-after-hip-and-knee-arthroplasties
#20
Benjamin I Rosner, Marc Gottlieb, William N Anderson
BACKGROUND: The impact of a new class of automated digital patient engagement (DPE) platforms on potentially avoidable costs, hospital admissions, and complications after discharge following hip and knee arthroplasties has not been established. METHODS: We conducted a multicenter observational cohort study comparing claims data for potentially avoidable costs, hospital admissions, and complications for 90 days after discharge following hip and knee arthroplasties at 10 practice sites in CA and NV...
December 2, 2017: Journal of Arthroplasty
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