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https://www.readbyqxmd.com/read/28209401/the-effect-of-prophylactic-cerclage-wires-in-primary-total-hip-arthroplasty-a-biomechanical-study
#1
Andrew C Waligora, John R Owen, Jennifer S Wayne, Shane R Hess, Gregory J Golladay, William A Jiranek
BACKGROUND: Despite literature to support the use of various cerclage techniques to address intraoperative femoral fractures in total hip arthroplasty, there are limited data to support prophylactic cerclage wiring of the femur during cementless implant placement. This study aims to evaluate the effect of prophylactic calcar cerclage wires on the biomechanical parameters required to produce periprosthetic femoral fractures and on the morphology of these fracture patterns in stable cementless femoral implants...
January 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28198543/deformation-of-the-zurich-cementless-acetabular-cup-caused-by-implantation-in-a-canine-cadaver-model
#2
Geoffrey D Panjeton, Stanley E Kim, Kelvin Chang, Lindsey S Palm, Peter G Ifju
OBJECTIVE: To evaluate the change in geometry of the Zurich total hip arthroplasty (THA) acetabular component after implantation. ANIMALS: Hemipelves from adult mix-breed dogs weighing between 20 and 25 kg. METHODS: Digital image correlation imaging was performed prior to, immediately after, and 24 hours after impaction of Zurich THA acetabular component, and after removal of the cup from the specimen. Patterns of deformation were qualitatively described, and maximal deformations were compared between time points...
February 15, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28194499/bone-femoral-component-interface-gap-after-sagittal-mechanical-axis-alignment-is-filled-with-new-bone-after-cementless-total-knee-arthroplasty
#3
Shinichi Kuriyama, Katsufumi Hyakuna, Satoshi Inoue, Yasutsugu Kawai, Yasuyuki Tamaki, Hiromu Ito, Shuichi Matsuda
PURPOSE: This study retrospectively evaluated the fate of mismatch between an uncemented femoral component and each femoral cut surface (i.e., wedge-shaped gap) relative to sagittal mechanical alignment in total knee arthroplasty (TKA). METHODS: Primary TKA was performed on 99 consecutive knees. The femoral components were aligned to the sagittal mechanical axis with CT-based navigation. All patients were assessed with postoperative true lateral radiographs. Bone-side surfaces of the uncemented femoral component were divided into five zones: anterior flange, anterior chamfer, posterior chamfer, posterior part, and distal part, which were defined as zones 1 to 5, respectively...
February 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28186872/acoustic-pattern-evaluation-during-cementless-hip-arthroplasty-surgery-may-be-a-new-method-for-predicting-complications
#4
Itaru Morohashi, Hideaki Iwase, Akio Kanda, Taichi Sato, Yasuhiro Homma, Atsuhiko Mogami, Osamu Obayashi, Kazuo Kaneko
BACKGROUND: Although surgeons must perform implantation of the cementless stem during total hip arthroplasty (THA) without complications, assessment is left to the surgeon's intuitive judgement, which could contain inter/intra-observer bias variety. We therefore asked (1) whether the sound created during the stem implantation could be evaluated objectively and (2) whether those sounds are correlate to the complication specific to the cementless stems. Our hypothesis is that the sounds produced during stem insertion could be quantified and related to the complications...
2017: SICOT-J
https://www.readbyqxmd.com/read/28184362/uncemented-total-hip-replacement-after-two-years-of-neglected-hip-dislocation-with-fracture-of-posterior-column-and-wall-of-the-acetabulum
#5
Sundaresh Dc, Sharath K Ramanath, Amit Grover, Daksh Gadi
INTRODUCTION: Posterior hip dislocation of the hip with acetabular fracture is a challenging problem to treat. Such dislocations are associated with avascular necrosis of the femoral head if neglected. Managing such conditions with total hip replacement (THR) is very difficult because of associated altered anatomy. CASE PRESENTATION: We hereby report a two-year neglected hip dislocation with associated acetabular fracture successfully treated with uncemented THR...
November 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28169450/quantitating-the-effect-of-prosthesis-design-on-femoral-remodeling-using-high-resolution-region-free-densitometric-analysis-dxa-rfa
#6
Mohsen Farzi, Richard M Morris, Jeannette Penny, Lang Yang, Jose M Pozo, Søren Overgaard, Alejandro F Frangi, J Mark Wilkinson
Dual energy X-ray absorptiometry (DXA) is the reference standard method used to study bone mineral density (BMD) after total hip arthroplasty (THA). However, the subtle, spatially-complex changes in bone mass due to strain-adaptive bone remodeling relevant to different prosthesis designs are not readily resolved using conventional DXA analysis. DXA region free analysis (DXA RFA) is a novel computational image analysis technique that provides a high-resolution quantitation of periprosthetic BMD. Here we applied the technique to quantitate the magnitude and areal size of periprosthetic BMD changes using scans acquired during two previous randomized clinical trials (2004 to 2009); one comparing three cemented prosthesis design geometries, and the other comparing a hip resurfacing versus a conventional cementless prosthesis...
February 7, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28167868/allergy-in-total-knee-replacement-does-it-exist-review-article
#7
REVIEW
Martin Faschingbauer, Lisa Renner, Friedrich Boettner
BACKGROUND: There is little data on whether preexisting allergies to implant materials and bone cement have an impact on the outcome of TKA. QUESTIONS/PURPOSES: This review article analyzes the current literature to evaluate the prevalence and importance of metal and cement allergies for patients undergoing total knee arthroplasty. METHODS: A review of the literature was performed using the following search criteria: "knee," "arthroplasty," and "allergy" as well as "knee," "arthroplasty," and "hypersensitivity...
February 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28167867/hip-resurfacing-international-perspectives-review-article
#8
REVIEW
Julien Girard
BACKGROUND: The hip resurfacing concept was developed for young and active patients, especially for femoral bone stock preservation. However, concerns about metal-on-metal bearings with adverse reactions to metal debris have led to a drop off in hip-resurfacing procedures. QUESTIONS/PURPOSES: The goal of this review is to evaluate our current knowledge of survivorship of second-generation hip resurfacing devices and elaborate international perspectives for product improvement...
February 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28160028/one-stage-bilateral-implantation-of-a%C3%A2-calcar-guided-short-stem-in%C3%A2-total-hip-arthroplasty-minimally-invasive-modified-anterolateral-approach-in-supine-position
#9
K P Kutzner, S Donner, M Schneider, J Pfeil, P Rehbein
OBJECTIVE: One-stage bilateral, muscle-preserving, calcar-guided implantation technique through the modified minimally invasive anterolateral approach in supine position. INDICATIONS: Bilateral primary/secondary osteoarthritis of the hip; bilateral femoral head necrosis; ASA I-III. CONTRAINDICATIONS: ASA IV; severe osteoporosis, other factors jeopardizing stable anchorage of cementless, calcar-guided short-stem; infection. SURGICAL TECHNIQUE: Supine position...
February 3, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28157079/treatment-outcomes-and-quality-of-life-after-the-implantation-of-modular-prostheses-of-the-proximal-femur-in-patients-with-cancer-metastases
#10
Grzegorz Guzik
BACKGROUND: Surgical treatment of pathological fractures of the proximal femur with intramedullary rods produces good short-term outcomes, but after some time the fixation often becomes unstable in patients with a good prognosis and a repeat surgery is required. Modular prostheses allow for better long-term outcomes. MATERIAL AND METHODS: A total of 64 surgical resection procedures for metastatic tumours of the proximal femur combined with the implantation of modular prostheses were performed at the Oncological Orthopaedics Department in Brzozów in 2010-2014...
May 5, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28155838/periprosthetic-metastatic-lesion-in-stem-region-after-tha-case-study
#11
Janusz Płomiński, Artur Pepłoński, Mateusz Jeśkiewicz
The paper describes a periprosthetic metastatic lesion in the stem region which developed 4 years after cementless total hip arthroplasty in a 64-year-old female patient. The patient underwent primary THA due to osteoarthritis in 2010. In June 2014, she presented with increasing hip pain. Diagnostic imaging revealed a periprosthetic osteolytic lesion in the stem region. The patient was referred to the Orthopaedic Department for further evaluation with a suspicion of pyogenic osteomyelitis. An open surgical biopsy was performed...
November 30, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28150224/isolated-acetabular-revision-with-femoral-stem-retention-after-bipolar-hip-arthroplasty
#12
Nobuhiro Kaku, Tomonori Tabata, Hiroaki Tagomori, Hiroshi Tsumura
INTRODUCTION: In bipolar hemiarthroplasty, migration of the outer cup component into the acetabular cup, with evidence of severe osteolysis in the acetabulum, commonly occurs without loosening of the femoral component. The merits of retaining the stable femoral component in these cases have been debated. Our study aimed to determine whether revision of the acetabular component in isolation could be successfully performed. MATERIALS AND METHODS: The data of 54 patients (61 hips), 44 women, and 10 men, aged 67...
February 1, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28144690/-on-the-history-of-cementless-implants-in-extremity-surgery
#13
Pavel Dufek
The aim of implantation of cementless hip prostheses is vital ingrowth of bone into the structured metal surface of the implant. Since the 1960s several implants with surfaces made of cobalt-based alloys have been produced for this purpose. In the 1980s a novel hip endoprosthesis with a spongiosa-metal surface was introduced. The three-dimensional ingrowth of bone tissue into the structured surface of the implant could be demonstrated both histologically and using scanning electron microscopy (SEM). These implants made of cobalt-based alloys can also be used in endo-exo prostheses...
January 31, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28139342/revision-total-hip-arthroplasty-using-imageless-navigation-with-the-concept-of-combined-anteversion
#14
Jun-Dong Chang, In-Sung Kim, Sharad Prabhakar, Sameer A Mansukhani, Sang-Soo Lee, Je-Hyun Yoo
BACKGROUND: The purpose of the study was to evaluate the implant positions and clinical results of revision total hip arthroplasty (THA) using an imageless navigation with the concept of combined anteversion. METHODS: A total of 40 cementless revision THAs (24 men and 16 women) using an imageless navigation with the concept of combined anteversion were retrospectively evaluated. The concept of combined anteversion was applied in cup positioning based on Widmer's equation (cup anteversion + 0...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28139187/cementless-calcar-replacement-stem-with-integrated-greater-trochanter-plate-for-unstable-intertrochanteric-fracture-in-very-elderly-patients
#15
Keizo Wada, Hiroshi Mikami, Koichi Oba, Hiroshi Yonezu, Koichi Sairyo
PURPOSE: To evaluate the clinical results of rigid fixation of the greater trochanter fragment through a consecutive hemiarthroplasty series using a cementless and modular calcar-replacement prosthesis with an integrated plate (MOD-Centaur stem) with 1-year follow-up in very elderly patients with unstable intertrochanteric fractures. METHODS: We assessed 44 consecutive very elderly patients (age >85 years; 2 men, 42 women; mean age at surgery: 89.6 years) with an unstable intertrochanteric fracture who underwent bipolar hemiarthroplasty using the MOD-Centaur stem by the same surgeon...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28130016/cortical-strut-allograft-support-of-modular-femoral-junctions-during-revision-total-hip-arthroplasty
#16
Chin Tat Lim, Derek F Amanatullah, James I Huddleston, Katherine L Hwang, William J Maloney, Stuart B Goodman
BACKGROUND: There is risk of junction failure when using modular femoral stems for revision total hip arthroplasty (THA), especially with loss of bone stock in the proximal femur. Using a cortical strut allograft may provide additional support of a modular femoral construct in revision THA. METHODS: We reviewed prospectively gathered clinical and radiographic data for 28 revision THAs performed from 2004 to 2014 using cementless modular femoral components with cortical strut allograft applied to supplement proximal femoral bone loss: 5 (18%) were fluted taper designs and 23 (82%) were porous cylindrical designs All the patients had a Paprosky grade IIIA or greater femoral defect...
December 21, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28121928/cementless-total-hip-arthroplasty-in-patients-with-ankylosing-spondylitis-a-retrospective-observational-study
#17
Jun Xu, Min Zeng, Jie Xie, Ting Wen, Yihe Hu
Controversies on the surgical protocols and efficacies of total hip arthroplasty (THA) in ankylosing spondylitis (AS) still exist. The aim of this study was to retrospectively analyze the perioperative managements and their outcomes related to performing THA on patients with AS.Data of 54 AS patients who underwent 81 THAs between 2008 and 2014 were retrospectively analyzed. Clinical and imaging data were collected preoperatively, postoperatively, and during the follow-up period for surgical efficacy.Using posterolateral approach, cementless prostheses were selected in all cases...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28111123/preparation-of-the-femoral-bone-cavity-for-cementless-stems-broaching-vs-compaction-a-five-year-randomized-radiostereometric-analysis-and-dual-energy-x-ray-absorption-study
#18
Mette H Hjorth, Søren Kold, Kjeld Søballe, Bente L Langdahl, Poul T Nielsen, Poul H Christensen, Maiken Stilling
BACKGROUND: Short-term experimental and animal studies have confirmed superior fixation of cementless implants inserted with compaction compared to broaching of the cancellous bone. METHODS: Forty-four hips in 42 patients (19 men) were randomly operated using cementless hydroxyapatite-coated Bi-Metric stems. Patients were followed with radiostereometric analysis at baseline, 6 and 12 weeks, 1, 2, and 5 years, and measurements of periprosthetic bone mineral density at baseline, 1, 2, and 5 years...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28110848/cementless-hip-stem-anteversion-in-the-dysplastic-hip-a-comparison-of-tapered-wedge-vs-metaphyseal-filling
#19
Naofumi Taniguchi, Tetsuya Jinno, Daisuke Koga, Tetsuo Hagino, Atsushi Okawa, Hirotaka Haro
BACKGROUND: Appropriate stem anteversion is important for achieving stability of the prosthetic joint in total hip arthroplasty. Anteversion of a cementless femoral stem is affected by the femoral canal morphology and varies according to stem geometry. We investigated the difference and variation of the increase in anteversion between 2 types of cementless stems, and the correlation between each stem and the preoperative femoral anteversion. METHODS: We retrospectively compared 2 groups of hips that underwent total hip arthroplasty using a metaphyseal filling stem (78 hips) or a tapered wedge stem (83 hips)...
December 22, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28110243/a-biomechanical-testing-system-to-determine-micromotion-between-hip-implant-and-femur-accounting-for-deformation-of-the-hip-implant-assessment-of-the-influence-of-rigid-body-assumptions-on-micromotions-measurements
#20
Steven Leuridan, Quentin Goossens, Jorg Roosen, Leonard Pastrav, Kathleen Denis, Michiel Mulier, Wim Desmet, Jos Vander Sloten
BACKGROUND: Accurate pre-clinical evaluation of the initial stability of new cementless hip stems using in vitro micromotion measurements is an important step in the design process to assess the new stem's potential. Several measuring systems, linear variable displacement transducer-based and other, require assuming bone or implant to be rigid to obtain micromotion values or to calculate derived quantities such as relative implant tilting. METHODS: An alternative linear variable displacement transducer-based measuring system not requiring a rigid body assumption was developed in this study...
January 16, 2017: Clinical Biomechanics
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