Read by QxMD icon Read


Brian W Carey, James Harty
BACKGROUND: The ATTUNE Knee by DePuy Synthes was introduced in 2013. It is designed to provide better range of motion and address patient-reported instability. The PFC Sigma Knee, an earlier prosthesis by DePuy Synthes, is a common knee replacement with a strong clinical track record. Our aim is to compare the outcomes after primary total knee replacement for end-stage knee osteoarthritis of the PFC and ATTUNE knee systems in 21 patients who each have prosthesis in opposite knees using WOMAC, Oxford Knee and SF-12 scores and evaluation of range of motion...
March 15, 2018: Journal of Orthopaedic Surgery and Research
Karim Sabeh, Milad Alam, Samuel Rosas, Shahrose Hussain, Michaela Schneiderbauer
INTRODUCTION: The growing trends of total knee arthroplasty (TKA) foreshadow an inevitable increase in the financial burden on healthcare expenditure estimated to almost nine billion dollars annually. This study aims to demonstrate the potential savings when using all-polyethylene (AP) compared to metal-backed (MB) tibial components and describes the cost variability amongst three major commercially available implants. MATERIALS AND METHODS: The cost of AP versus MB implants was analyzed using a large nationwide database, Emergency Care Research Institute (ECRI)...
March 12, 2018: Surgical Technology International
Ron N Alkalay, Robert Adamson, Michael W Groff
BACKGROUND CONTEXT: In the lumbar spine, end plate preparation for the interbody fusion cages may critically affect the cage's long term performance. This study investigated the effect of the interbody cage design on the compliance and cage subsidence of instrumented spines under cyclic compression. PURPOSE: To quantify the role of cage geometry and bone density on the stability of the spinal construct in response to cyclic compressive loads. STUDY DESIGN: Changes in the cage-bone interface and the effect of bone density on these changes were evaluated in a human cadaveric model for three intervertebral cage designs...
March 8, 2018: Spine Journal: Official Journal of the North American Spine Society
L Rony, P De Sainte Hermine, V Steiger, F Ferchaud, P Cronier
INTRODUCTION: Cuboid fractures are very rare. Hence, their treatment has not been standardized. Advances in imaging techniques, particularly three-dimensional computed tomography (3D CT), and the introduction of cuboid-specific plates has improved the care of these injuries. The aim of this study was to determine the radiological and clinical outcomes of anatomical reconstruction of comminuted cuboid fractures with a locking plate. HYPOTHESIS: Fixation of comminuted cuboid fractures with a cuboid-specific locking plate leads to stable anatomical reduction and good functional outcomes...
January 30, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
Matthias A König, Michael P Grevitt, Nasir A Quraishi, Bronek M Boszczyk
BACKGROUND: Stand-alone anterior interbody fusion (STALIF) with poly-ether-ether-ketone (PEEK) cages could offer a treatment option in olisthesis cases. The fixation of the PEEK-cage at the L5/S1 inferior endplate with long divergent screws however might endanger neural sacral structures, especially the S1 nerve root. If shorter screws are used, the achieved bony purchase might not be sufficient to resist the pull out and shear forces at the lumbosacral junction. The aim of the present investigation was to evaluate the use of long screws in PEEK-cages for olisthesis cases at the L5/S1 segment and its neurological complications...
February 6, 2018: British Journal of Neurosurgery
E M Pinder, K G Chee, M Hayton, S R Murali, S C Talwalkar, I A Trail
Purpose  This study aims to report the 5-year survivorship of revision wrist arthroplasties and to report midterm clinical and radiological results. Materials and Methods  All patients receiving a revision wrist arthroplasty in our unit between January 1, 1997 and October 31, 2010 were identified, and clinical notes retrospectively analyzed for Quick Disabilities of the Arm, Shoulder and Hand (quickDASH), Patient Evaluation Method (PEM), Patient-Rated Wrist Evaluation (PRWE), the range of movement, and visual analog score (VAS)...
February 2018: Journal of Wrist Surgery
J Timothy, V Petralia, J R Wilson
CASE: Eighteen months after implantation of a C6-C7 cervical artificial disc (ProDisc-C; DePuy Synthes), a 44-year-old woman presented with right-sided C7 radiculopathy. Imaging revealed posterior subsidence of the prosthesis, with C7 foraminal stenosis. An ultrasonic curet was used to safely and effectively extract the prosthesis without neurologic complication; safe access for the insertion of an intervertebral cage was facilitated. CONCLUSION: The ultrasonic curet was a safe and effective adjunct for revision artificial cervical disc replacement surgery; this technique may help to reduce potential injury to neural structures in a procedure with a traditionally high complication rate...
January 24, 2018: JBJS Case Connector
Walid Reda, Ahmed Khedr
In most anterior cruciate ligament (ACL) tears, the tear is at the femoral side leaving a robust stump attached to the tibia. Stump-preserving ACL reconstruction carries the advantage of rapid reinnervation and revascularization of the graft. In this technique, the femoral tunnel is created after exposing the femoral footprint. The ACL tibial stump is split and the tip of the ACL tibial guide is introduced through this split to reach the center of the tibial footprint. The tibial tunnel is then created and the ACL stump is bored to allow the passage of the graft...
August 2017: Arthroscopy Techniques
Jia Liu, Jiang Deng, Xiao-Song Han, Lin Xu
OBJECTIVE: To investigate the decrease of bone mineral density in female patients, effects on acetabular displacement. METHODS: From October 2013 to November 2015, a total of 34 patients underwent total hip replacement in the Department of orthopedics, the Third Affiliated Hospital of Zunyi Medical College. The two groups of patients were female and the patients were treated with hip osteoarthritis. Based on the lowest value of preoperative dual energy X-ray bone mineral density (DXA), the patients were divided into normal group and low bone mineral density(-3...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Ichiro Okano, Takatoshi Sawada, Nobumasa Kushima, Tetsuya Tachibana, Katsunori Inagaki
Background: Basicervical proximal femoral fracture is a known subtype of extracapsular fracture and is mechanically unstable, especially for the rotational direction, which may lead to implant failure. A cephalomedullary nail (CMN) is widely used for the fixation of unstable extracapsular fracture; however, its application for basicervical fracture remains controversial. Helical blade CMN is proven to have more rotational stability than traditional lag screw implants and potentially advantageous in the treatment of basicervical fracture...
December 2017: Geriatric Orthopaedic Surgery & Rehabilitation
Moritz Crönlein, Martin Lucke, Marc Beirer, Dominik Pförringer, Chlodwig Kirchhoff, Peter Biberthaler, Karl F Braun, Sebastian Siebenlist
BACKGROUND: Management of distal humeral fractures remains to be one of the most challenging aspects in trauma surgery. Low profile plating systems with variable angle screw fixation represent a crucial advancement to the established angular stable locking plates with considerable attention in current research. The aim of the prospective randomized trial was to review the preliminary results and patients' outcome following treatment with these newly developed implants and to rule out potential differences in fracture treatment of two different plating systems...
December 28, 2017: BMC Musculoskeletal Disorders
Joan E Steffen, Ella A Fassler, Kevin J Reardon, David S Egilman
In 2001, DePuy, a wholly-owned subsidiary of Johnson & Johnson (J&J/DePuy), initiated a seeding study called the "Multi-center, Prospective, Clinical Evaluation of Pinnacle Acetabular Implants in Total Hip Arthroplasty" (PIN Study). J&J/DePuy designed this study to develop new business opportunities during the launch of their Pinnacle Hip System (PHS) and generate survivorship data for marketing. This article, the first review of a seeding trial for a medical device, examines internal company documents relating to the PIN Study; the analysis herein focuses on the integrity of J&J/DePuy's research practices in conception, implementation, and analysis...
2018: Accountability in Research
Michele Ulivi, Luca C Orlandini, Valentina Meroni, Michele D M Lombardo, Giuseppe M Peretti
BACKGROUND: The primary aim of our study was to assess clinical performance, patient reported outcome and radiological results of cementless primary total hip arthroplasty using Tri-Lock Bone Preservation Stem. METHODS: Between March 2010 and June 2012, 163 consecutive patients, were enrolled in the study. Patients were assessed clinically and radiographically prior to surgery as well as at 6, 12, 24 months and then at 5, 6, and 7 years postoperatively. RESULTS: Using the Dorr classification, 39 patients (23...
December 2, 2017: Journal of Arthroplasty
Robert F Heary, Naresh K Parvathreddy, Nitin Agarwal
Background: Vertebroplasty is a treatment for osteoporotic vertebral compression fractures. The optimal location of needle placement for cement injection remains a topic of debate. As such, the authors assessed the effects of location of two types of cement instillations. In addition, the motion and failure modes at the index and adjacent segments were measured. Materials and Methods: Seven human osteoporotic cadaver spines (T1-L4), cut into four consecutive vertebral segments, were utilized...
November 2017: Indian Journal of Orthopaedics
A Abdelgaied, J Fisher, L M Jennings
A more robust pre-clinical wear simulation framework is required in order to simulate wider and higher ranges of activities, observed in different patient populations such as younger more active patients. Such a framework will help to understand and address the reported higher failure rates for younger and more active patients (National_Joint_Registry, 2016). The current study has developed and validated a comprehensive combined experimental and computational framework for pre-clinical wear simulation of total knee replacements (TKR)...
February 2018: Journal of the Mechanical Behavior of Biomedical Materials
Bilal M Barkatali, Dinesh P Alexander, Anil K Gambhir, Henry Wynn Jones, Tim N Board
INTRODUCTION: The moderately cross-linked Depuy Marathon® cemented acetabular component was introduced into the UK in 2007. The wear rate for the previously introduced Marathon® uncemented acetabular component has been reported to range from 0.06 to 0.01 mm/year.The aim of this study was to present the medium-term results and wear rate of the Marathon® cemented prosthesis used in primary total hip arthroplasty. METHODS: 103 Marathon® cemented acetabular components were implanted between 2008 and 2009 in primary arthroplasty, who were eligible for this study...
December 1, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Ulrike Mueller, Benjamin Panzram, Steffen Braun, Robert Sonntag, J Philippe Kretzer
BACKGROUND: Implant manufacturers proclaim that the tapers of modular total hip arthroplasty are not standardized and can vary from manufacturer to manufacturer. That is why the combination of various components from different manufacturers ("Mix and Match") is not permitted. In this study, different taper combinations were investigated experimentally to assess the effect of "Mix and Match" regarding the taper connection strength. METHODS: Torque-off tests using hip stems and metal femoral heads from 6 different implant manufacturers were performed...
March 2018: Journal of Arthroplasty
Yoshihiro Abe, Masahiro Suzuki, Hiromasa Wakita
BACKGROUND: To assess the surgical results of distal radius fractures with the involvement of a volar rim fragment using the DePuy-Synthes 2.0 mm and 2.4 mm locking plates. METHODS: Subjects were six women and one man of average age 57 years (range, 31-83 y) and a mean follow-up period of 9 months (range, 5-19 mo) with AO B3 (volar shearing) distal radius fractures. Time of the procedure, physical examination of wrist range of motion, grip strength compared with the contralateral healthy wrist, and radiographic evaluation (volar tilt, radial inclination, and ulnar variance) were evaluated...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
Yasuaki Tamaki, Tomohiro Goto, Takahiko Tsutsui, Tomoya Takasago, Keizo Wada, Koichi Sairyo
Here we present a case of pseudotumor following total hip arthroplasty (THA) that resulted in a circulatory disturbance caused by compression of the femoral vasculature. A 63-year-old man presented with pain, swelling, and redness of the left leg 5 years after primary metal-on-metal THA using the AML-Plus stem, Pinnacle® acetabular cup, and 36 mm diameter Ultamet™ metal head system (DePuy Orthopaedics, Warsaw, IN). Enhanced computed tomography and magnetic resonance imaging revealed a large cystic lesion extending from the left hip anteriorly to the intrapelvic region and compressing the left femoral vessels...
2017: Case Reports in Orthopedics
Alexander Hanke, Martin Bäumlein, Siegmund Lang, Boyko Gueorguiev, Michael Nerlich, Thomas Perren, Paavo Rillmann, Christian Ryf, Theodore Miclau, Markus Loibl
OBJECTIVES: Synthetic bone grafts (SBGs) are widely used to fill bone defects after fracture reduction. This study assessed the long-term resorption of two different calcium phosphate products (A=ChronOS™ inject and B=Norian® SRS® ; both DePuy Synthes, Oberdorf, Switzerland) used in the surgical treatment of tibial plateau fractures. DESIGN: Long-term clinical and radiologic follow-up of 52 patients after surgical treatment of intraarticular tibial plateau fractures augmented with SBGs...
December 2017: Injury
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"