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https://www.readbyqxmd.com/read/28636252/influence-of-analyzed-lubricant-volumes-on-the-amount-and-characteristics-of-generated-wear-particles-from-three-different-types-of-polyethylene-liner-materials
#1
Jana Markhoff, Carmen Zietz, Christian Fabry, Gerhard Fulda, Rainer Bader
The articulating components of artificial joints consist mainly of metals, ceramics, or polymers. Resulting abrasive wear particles can promote osteolysis and aseptic loosening of the endo-prosthetic implants. Ultra-high-molecular-weight-polyethylene is the material used most for bearing couples in total hip replacement. In the present study, three types of polyethylene (PE) liners varying in material composition, i.e., (1) conventional PE (C-PE), (2) sequentially cross-linked PE (SX-PE), (3) cross-linked PE blended with vitamin E (EX-PE) articulating with two types of femoral heads were used...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28630723/outcome-after-arthroscopic-labral-surgery-in-patients-previously-treated-with-periacetabular-osteotomy-a-follow-up-study-of-43-patients
#2
Charlotte Hartig-Andreasen, Torsten G Nielsen, Bent Lund, Kjeld Søballe, Martin Lind
To identify factors predicting failure after hip arthroscopy in patients with previous periacetabular osteotomy (PAO) defined as a conversion to total hip replacement (THR) and to evaluate the patient reported outcome scores. Of 55 hips treated with hip arthroscopy after PAO from Aug 2008 to 2012 at Aarhus University Hospital, 43 hips were included (median age: 36.1 yrs, range 16.3-56.9 yrs). Indications were unacceptable pain, a positive FABER and impingement test and signs of labral damage on MR-arthrography...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28626592/diffuse-b-cell-non-hodgkin-s-lymphoma-presenting-atypically-as-periprosthetic-joint-infection-in-a-total-hip-replacement
#3
Aysha Rajeev, Angela Ralte, Nameer Choudhry, Faizan Jabbar, Paul Banaszkiewicz
The occurrence of extranodal primary B cell non-Hodgkin's lymphoma is rare. Total hip replacement is one of the most common orthopaedic procedures performed. There has been an increased incidence of primary lymphomas involving periprosthetic sites. Chronic inflammation due to metal debris arising from the prosthetic implants has been evidenced as one of the causes for the development of soft tissue lymphomas albeit rarely. We describe a case report of a 77-year-old patient who had underwent a cemented total hip replacement in the past who further developed large B cell primary non-Hodgkin's lymphoma...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28607788/a-case-of-fracture-redislocation-of-the-hip-caused-by-a-depressed-fracture-of-the-femoral-head-similar-to-a-hill-sachs-lesion
#4
Yoshihiko Okudera, Hiroaki Kijima, Shin Yamada, Natsuo Konishi, Hitoshi Kubota, Hiroshi Tazawa, Takayuki Tani, Norio Suzuki, Keiji Kamo, Ken Sasaki, Tetsuya Kawano, Yosuke Iwamoto, Naohisa Miyakoshi, Yoichi Shimada
The present case shows a case of fracture-redislocation of the hip caused by a depressed fracture of the femoral head similar to a Hill-Sachs lesion. A 59-year-old man fell from a roof and his left hip joint was dislocated posteriorly. He was admitted to a nearby hospital, and he was referred to our hospital more than 24 hours after injury. Computed tomography (CT) suggested a bone chip from the posterior wall of the acetabulum roof and a depressed femoral head that cut into the posterior margin of the acetabulum roof...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28599593/a-combined-experimental-and-finite-element-approach-to-analyse-the-fretting-mechanism-of-the-head-stem-taper-junction-in-total-hip-replacement
#5
Thom Bitter, Imran Khan, Tim Marriott, Elaine Lovelady, Nico Verdonschot, Dennis Janssen
Fretting corrosion at the taper interface of modular hip implants has been implicated as a possible cause of implant failure. This study was set up to gain more insight in the taper mechanics that lead to fretting corrosion. The objectives of this study therefore were (1) to select experimental loading conditions to reproduce clinically relevant fretting corrosion features observed in retrieved components, (2) to develop a finite element model consistent with the fretting experiments and (3) to apply more complicated loading conditions of activities of daily living to the finite element model to study the taper mechanics...
June 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28598455/primary-total-hip-replacement-in-the-military-hospital-in-kathmandu
#6
P Chand, S R Magar, B B Thapa, B Shrestha
INTRODUCTION: Total hip replacement is one of the most widely performed and amongst the most successful orthopedic procedures performed worldwide. Even though it is a common orthopedic procedure in developed nations, it is performed only in selected centers in Nepal. This study will review the functional outcome of total hip replacements carried out in Shree Birendra Hospital. METHODS: We reviewed the records of total hip replacements, which were carried out in Shree Birendra Hospital, Kathmandu...
January 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/28584511/an-evaluation-of-intra-and-post-operative-blood-loss-in-total-hip-arthroplasty-at-the-national-orthopaedic-hospital-lagos
#7
Michael Ebiyon Ugbeye, Wakeel Olaide Lawal, Olusegun John Ayodabo, Ine Prattson Adadevoh, Imeh James Akpan, Uche Nwose
BACKGROUND: Severe hip pain with associated significant functional limitation is the major indication for total hip replacement, a rewarding and gratifying procedure. However, significant blood loss can occur in the intra- and post-operative periods, posing a major challenge and necessitating prompt restoration of circulating blood volume to minimize morbidity and mortality. The aim of this study was to evaluate blood loss after primary total hip replacement, and to determine the effect of surgical time on blood loss...
January 2017: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/28583419/modified-dynamic-hip-screw-loaded-with-autologous-bone-graft-for-treating-pauwels-type-3-vertical-femoral-neck-fractures
#8
Deqing Luo, Weitao Zou, Yijiao He, Hang Xian, Lei Wang, Jiazuo Shen, Kejian Lian, Dasheng Lin
INTRODUCTION: Management of Pauwels type-3 vertical femoral neck fractures has been a challenging clinical problem as they experience high shear forces and thus a greater risk of treatment failure. There is no apparent consensus on the optimal implant type for these injuries. We developed a modified dynamic hip screw (DHS), which was designed to a cage in the lag screw, loaded with autologous bone graft for the treatment of Pauwels type-3 vertical femoral neck fractures. METHODS: Between February 2010 and January 2012, 17 consecutive patients with Pauwels type-3 vertical femoral neck fractures were treated with the modified DHS loaded with autologous bone graft...
May 26, 2017: Injury
https://www.readbyqxmd.com/read/28578684/metal-on-metal-hip-resurfacing-in-patients-younger-than-50%C3%A2-years-a-retrospective-analysis-1285-cases-12-year-survivorship
#9
Melissa D Gaillard, Thomas P Gross
BACKGROUND: The Nordic registry reports patients under 50 years old with total hip replacements realize only 83% 10-year implant survivorship. These results do not meet the 95% 10-year survivorship guideline posed by the UK's National Institute for Health and Care Excellence (NICE) in 2014. METHODS: The purpose of this study is threefold: First, we evaluate if metal-on-metal hip resurfacing arthroplasty meets these high standards in younger patients. Next, we compare outcomes between age groups to determine if younger patients are at higher risk for revision or complication...
June 2, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28577036/long-term-wear-of-dual-mobility-total-hip-replacement-cups-explant-study
#10
Bertrand Boyer, Thomas Neri, Jean Geringer, Alexandre Di Iorio, Remi Philippot, Frederic Farizon
PURPOSE: Dual mobility THA implantations are increasing. THA survival of more than 15 years is considered long-term survival based on the Charnley prosthesis, which has a median wear rate of 39 to 98 mm(3)/year. What is the median wear rate of dual mobility THA cups and its repartition on the liner volume? What are the factors influencing dual mobility wear? METHODS: Thirty-five explants were analysed. The liners were entirely mapped with a fully automatic stripe light scanner that uses green LED light...
June 3, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28576275/innoplant-total-hip-replacement-system
#11
REVIEW
Tisha A M Harper
Total hip replacement is a salvage procedure that is done to alleviate discomfort secondary to osteoarthritis in the hip, which is most often a result of hip dysplasia. Commercially available total hip replacement implants for small animal patients are classified as cemented or cementless. The INNOPLANT Total Hip Replacement system includes modular, screw-in cementless components that were developed to improve implant stability by maintaining as much normal anatomic structure, and by extension biomechanics of the coxofemoral joint, as possible...
July 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28576274/biomedtrix-total-hip-replacement-systems-an-overview
#12
REVIEW
Teresa D Schiller
Total hip replacement for canine and feline patients affected by degenerative, traumatic, and vascular injury of the coxofemoral joint has become a highly successful orthopedic procedure. The highly effective BioMedtrix total hip replacement systems use cemented and cementless implants with unique design features to address a variety of bone conditions and surgeon expertise and preferences. There are pros and cons for both systems with common and unique complications that can occur in either system. Surgeon experience and adherence to the principles of technique will strongly influence the complication rate and outcomes...
July 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28574122/a-retained-stitch-in-time-saves-9-but-does-it-increase-the-risk-of-deep-prosthetic-infection
#13
Bola Akinola, Ben Quansah, Theodore Gouliouris, Andrew D Carrothers
INTRODUCTION: During the posterior approach to the hip, the short external rotators are detached and secured with stay sutures. At the time of definitive closure, some surgeons incorporate the initial sutures into their repair while others discard for fresh sutures, presumably as an infection prevention measure. We have conducted a pilot study to investigate whether the incorporation of the primary stay sutures may constitute an infection risk to the patient undergoing a total hip replacement through the posterior approach...
May 23, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28539693/quality-based-procedures-for-knee-replacement-hip-replacement-and-hip-fracture-physiotherapists-perceptions-of-adherence-barriers-and-facilitators
#14
Kirsti J E Reinikka, Denise Taylor, Sylvia Daniel, Stacey Burns-Hogan, Brittany DePass, Laura McGill, Michael McLeod, Susan Safadi, Sandy Veit
Purpose: This mixed-methods study examined the perceived barriers to and facilitators of implementing best-practice guidelines (BPGs) and adhering to provincial Quality-Based Procedures (QBPs) by Ontario physiotherapists working with patients after total knee replacement (TKR), total hip replacement (THR), and hip fracture (HF). Method: Using snowball sampling, 93 hospital and home care physiotherapists working with patients after TKR, THR, or HF completed a Web-based survey. A subset of these participated in follow-up semi-structured telephone interviews...
2017: Physiotherapy Canada. Physiothérapie Canada
https://www.readbyqxmd.com/read/28536211/pathological-fracture-of-the-femoral-neck-following-septic-coxitis-and-chronic-osteomyelitis-a-potential-complication-of-lemierre-s-syndrome
#15
Dominik Maximilian Vogt, Ludger Tüshaus, Martin Kaiser, Martin Russlies
We portray the case of a 16-year-old girl who was initially admitted to the paediatric emergency department with non-specific symptoms of a severe cold and was first treated symptomatically on an ambulatory basis. Within 6 days she developed the full clinical picture of Lemierre's syndrome with the extraordinary manifestation of involvement of her right hip. Despite an interdisciplinary coordinated treatment as well as surgical therapy, a full-blown sepsis evolved within a short time period and resulted in almost 2 months of intensive care...
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28534471/management-of-acetabular-fractures-in-the-geriatric-patient
#16
Marc Hanschen, Sebastian Pesch, Stefan Huber-Wagner, Peter Biberthaler
INTRODUCTION: Open reduction and internal fixation (ORIF) is standard care for most acetabular fractures. With increasing numbers of acetabular fractures in the elderly, the risk of revision surgery and conversion to total hip replacement (THR) is increasing. Alarmingly, about 20-25% of acetabular fractures in the elderly following ORIF needed revision and conversion to delayed THR. METHODS: Recently, prognostic factors have been identified, which correlate with an increased risk of worse outcomes following ORIF of acetabular fractures in the elderly patient...
2017: SICOT-J
https://www.readbyqxmd.com/read/28532408/bone-turnover-and-periprosthetic-bone-loss-after-cementless-total-hip-arthroplasty-can-be-restored-by-zoledronic-acid-a-prospective-randomized-open-label-controlled-trial
#17
Tsan-Wen Huang, Chao-Jan Wang, Hsin-Nung Shih, Yuhan Chang, Kuo-Chin Huang, Kuo-Ti Peng, Mel S Lee
BACKGROUND: Although the loss of bone mineral density (BMD) after total hip arthroplasty (THA) is a known problem, it remains unresolved. This study prospectively examined the effect of zoledronic acid (ZA) on bone turnover and BMD after cementless THA. METHODS: Between January 2010 and August 2011, 60 patients who underwent cementless THA were randomly assigned to receive either ZA infusion or placebo (0.9% normal saline only) postoperatively. ZA was administered at 2 day and 1 year postoperatively...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28521834/incidence-of-total-hip-or-knee-replacement-due-to-osteoarthritis-in-relation-to-thyroid-function-a-prospective-cohort-study-the-nord-tr%C3%A3-ndelag-health-study
#18
Alf Inge Hellevik, Marianne Bakke Johnsen, Arnulf Langhammer, Anne Marie Fenstad, Ove Furnes, Kjersti Storheim, John Anker Zwart, Gunnar Flugsrud, Lars Nordsletten
BACKGROUND: To study whether thyroid function was associated with risk of hip or knee replacement due to primary osteoarthritis. METHODS: In a prospective cohort study, data from the second and third survey of the Nord-Trøndelag Health Study were linked to the Norwegian Arthroplasty Register in order to identify total hip or knee replacement as a result of primary osteoarthritis. RESULTS: Among 37 891 participants without previously known thyroid disease we recorded 978 total hip replacements (THRs) and 538 total knee replacements (TKRs) during a median follow-up time of 15...
May 18, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28511839/the-implication-of-the-osteolysis-threshold-and-interfacial-gaps-on-periprosthetic-osteolysis-in-cementless-total-hip-replacement
#19
Hamidreza Alidousti, Neil W Bressloff
Osteolysis around joint replacements may develop due to migration of wear particles from the joint space into gaps between the interface bone and the implant where they can accumulate in high concentrations to cause tissue damage. Osteolysis may appear in various postoperative times and morphological shapes which can be generalized into linear and focal. However, there are no clear explanations on the causes of such variations. Patients' degree of sensitivity to polyethylene particles (osteolysis thresholds), the local particle concentration and the access route provided by the interface gaps have been described as determining factors...
May 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28509584/the-influence-of-the-crutch-setup-on-stability-and-weight-bearing-parameters-in-post-total-hip-replacement-surgery-patients-during-quiet-standing
#20
Francesco Esposito, Marco Freddolini, Leonardo Latella, Palmina Braccio, Massimiliano Marcucci, Andrea Corvi
PURPOSE: The purpose of this study is to evaluate the influence of the crutch setup on standing, in post total hip replacement (THR) surgery patients. MATERIALS AND METHODS: Thirty patients after THR were randomly assigned to walking with the elbow flexed (EF) or elbow straight (ES) crutch setup. Subjects were asked to stand on a force platform in a comfortable position with the crutch positioned on the unaffected side, facing forward for 10 seconds. Centre of pressure total path and maximal excursion were evaluated in both medio-lateral and anterior-posterior planes...
May 16, 2017: Disability and Rehabilitation. Assistive Technology
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