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Anterior hip replacement

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https://www.readbyqxmd.com/read/28269629/hip-joint-geometry-effects-on-cartilage-contact-stresses-during-a-gait-cycle
#1
Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu
The cartilage surface geometry of natural human hip joint is commonly regarded as sphere. It has been widely applied in computational simulation and hip joint prosthesis design. Some new geometry models have been developed and the sphere assumption has been questioned recently. The objective of this study was to analyze joint geometry effects on cartilage contact stress distribution and investigate contact patterns during a whole gait cycle. Hip surface was reconstructed from CT data of a healthy volunteer...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269573/pose-measurement-of-anterior-pelvic-plane-based-on-inertial-measurement-unit-in-total-hip-replacement-surgeries
#2
Zhe Cao, Shaojie Su, Hong Chen, Hao Tang, Yixin Zhou, Zhihua Wang
In Total Hip Replacement (THR), inaccurate measurement of Anterior Pelvic Plane (APP), which is usually used as a reference plane, will lead to malposition of the acetabular prosthesis. As a result, the risk of impingement, dislocation and wear will increase and the safe range of motion will be limited. In order to acquire the accurate pose of APP, a measurement system is designed in this paper, which includes two parts: one is used to estimate the initial pose of APP and the other is used to trail dynamic motion of APP...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227887/hip-joint-geometry-effects-on-cartilage-contact-stresses-during-a-gait-cycle
#3
Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu, Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu, An-Bang Ma, Dong-Yun Gu, Hui-Hui Wu, Dong Wang
The cartilage surface geometry of natural human hip joint is commonly regarded as sphere. It has been widely applied in computational simulation and hip joint prosthesis design. Some new geometry models have been developed and the sphere assumption has been questioned recently. The objective of this study was to analyze joint geometry effects on cartilage contact stress distribution and investigate contact patterns during a whole gait cycle. Hip surface was reconstructed from CT data of a healthy volunteer...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227828/pose-measurement-of-anterior-pelvic-plane-based-on-inertial-measurement-unit-in-total-hip-replacement-surgeries
#4
Zhe Cao, Shaojie Su, Hong Chen, Hao Tang, Yixin Zhou, Zhihua Wang, Zhe Cao, Shaojie Su, Hong Chen, Hao Tang, Yixin Zhou, Zhihua Wang, Zhe Cao, Yixin Zhou, Hong Chen, Zhihua Wang, Hao Tang, Shaojie Su
In Total Hip Replacement (THR), inaccurate measurement of Anterior Pelvic Plane (APP), which is usually used as a reference plane, will lead to malposition of the acetabular prosthesis. As a result, the risk of impingement, dislocation and wear will increase and the safe range of motion will be limited. In order to acquire the accurate pose of APP, a measurement system is designed in this paper, which includes two parts: one is used to estimate the initial pose of APP and the other is used to trail dynamic motion of APP...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28184276/segregation-for-reduction-of-regulated-medical-waste-in-the-operating-room-a-case-report
#5
Helen Ki Shinn, Youngyoen Hwang, Byung-Gun Kim, Chunwoo Yang, WonJu Na, Jang-Ho Song, Hyun Kyoung Lim
One-third of all hospital-regulated medical waste (RMW) comes from the operating room (OR), and it considerably consists of disposable packaging and wrapping materials for the sterilization of surgical instruments. This study sought to identify the amount and type of waste produced by ORs in order to reduce the RMW so as to achieve environmentally-friendly waste management in the OR. We performed an initial waste segregation of 4 total knee replacement arthroplasties (TKRAs) and 1 total hip replacement arthroplasty, and later of 1 extra TKRA, 1 laparoscopic anterior resection of the colon, and 1 pelviscopy (with radical vaginal hysterectomy), performed at our OR...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28165601/bikini-versus-traditional-incision-direct-anterior-approach-is-there-any-difference-in-soft-tissue-damage
#6
Brent A Lanting, Kirk C Hartley, Adam J Raffoul, Timothy A Burkhart, Lyndsay Sommerville, Glynn R Martin, James L Howard, Marjorie Johnson
INTRODUCTION: The direct anterior approach for total hip replacements has reported advantages of improved early function and muscle preservation. In an effort to improve healing and cosmesis, a change in the orientation of the incision has been proposed. Traditionally, the skin incision is in-line with the tensor fasciae latae muscle belly. The bikini incision is orthogonal to this orientation. The hypothesis was that muscle damage would be increased by using the bikini incision. METHODS: A traditional or bikini incision was performed on 18 cadaveric hips...
February 6, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28142365/hip-and-knee-osteoarthritis-affects-younger-people-too
#7
Ilana N Ackerman, Joanne L Kemp, Kay M Crossley, Adam G Culvenor, Rana S Hinman
Synopsis Although osteoarthritis (OA) has traditionally been considered a disease of older age, hip and knee OA can and does affect younger adults, with a profound impact on psychosocial well-being and work capacity. Obesity and a history of traumatic knee injury (eg, anterior cruciate ligament rupture and/or meniscal tear) are key risk factors for the accelerated development of knee OA, while structural hip deformities (including those contributing to femoroacetabular impingement syndrome) are strong predictors of early-onset hip OA...
February 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28106229/the-rm-pressfit-vitamys-5-year-swiss-experience-of-the-first-100-cups
#8
Michael Wyatt, Jan Weidner, Dominik Pfluger, Martin Beck
BACKGROUND: The RM Pressfit vitamys is a titanium particle-coated monoblock cup with vitamin E stabilised highly cross-linked polyethylene. Initial fixation is achieved via press-fit with subsequent stability by bone on-growth. This is the first study to report the 5-year results of this design. METHODS: We performed a prospective cohort study according to STROBE guidelines of 100 consecutive total hip replacements (THRs) in 92 patients all with ceramic heads. Demographic data, pre/postoperative visual analogue scale (VAS) for pain and satisfaction, Harris Hip Scores (HHS) and complications were recorded...
January 20, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28104228/the-efficacy-of-posterior-plating-and-anterior-column-screw-fixation-in-the-management-of-t-shaped-acetabular-fractures-cart-analysis-of-prospective-cohort-study
#9
A S Hammad, T A El-Khadrawe, A H Waly, G A Abu-Sheasha
T-shaped acetabular fractures are challenging injuries. The goal of surgical treatment is to achieve a stable and a concentric reduction of the femoral head under the anatomically reduced weight-bearing dome. There is an ongoing debate about the ideal approach and fixation method for T-shaped fractures. In this study, a group of 34 patients with T-shaped acetabular fractures were treated by posterior plating and anterior column screw. All patients, were followed for at least two years or until hip replacement...
January 9, 2017: Injury
https://www.readbyqxmd.com/read/28012048/segmental-acetabular-rim-defects-bone-loss-oversizing-and-press-fit-cup-in-total-hip-arthroplasty-evaluated-with-a-probabilistic-finite-element-analysis
#10
Farid Amirouche, Giovanni F Solitro, Amit Walia, Mark Gonzalez, Aimee Bobko
PURPOSE: Management of segmental rim defects and bone mineral density (BMD) loss in the elderly prior to total hip replacement is unclear within classification systems for acetabular bone loss. In this study, our objectives were (1) to understand how a reduction in BMD in the elderly affects the oversizing of a press-fit cup for primary fixation and (2) to evaluate whether the location of the segmental defect affected cup fixation. METHODS: A finite element (FE) model was used to simulate and evaluate cup insertion and fixation in the context of segmental rim defects...
December 23, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27942738/anterior-approach-in-total-hip-replacement
#11
Matteo Cadossi, Andrea Sambri, Giuseppe Tedesco, Antonio Mazzotti, Silvio Terrando, Cesare Faldini
In total hip replacement, the anterior approach is intermuscular and internervous and allows the surgeon to reach the capsule without muscle detachment. Advantages include faster recovery and excellent functional outcome as well as reduced postoperative pain and hospital stay. Experienced surgeons currently performing total hip replacement should be aware of all of the difficulties associated with this procedure as well as all of the tricks to overcome the most challenging steps in order to reduce complications during the learning curve...
December 8, 2016: Orthopedics
https://www.readbyqxmd.com/read/27876253/the-impact-of-surgical-technique-on-patient-reported-outcome-measures-and-early-complications-after-total-hip-arthroplasty
#12
Udai S Sibia, Timothy R Turner, James H MacDonald, Paul J King
BACKGROUND: This study examines patient and surgeon reported outcome measures, complications during index admission, length of stay (LOS), and discharge disposition in a series of total hip replacements (THR) performed via the direct anterior (DA) or posterolateral (PL) approach. METHODS: Five surgeons performed 2698 total hip replacements (1457 DA vs 1241 PL) between January 2010 and June 2015. Complications during index admission were recorded using billing and claims data...
November 1, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27842584/risk-of-infection-in-primary-elective-total-hip-arthroplasty-with-direct-anterior-approach-or-lateral-transgluteal-approach-a-prospective-cohort-study-of-1104-hips
#13
Thomas Ilchmann, Werner Zimmerli, Lilianna Bolliger, Peter Graber, Martin Clauss
BACKGROUND: The direct anterior approach (DAA) is increasingly popular for hip replacement. However, the small incision and the location near to the groin might increase the risk of periprosthetic joint infection (PJI). We asked the questions (i) whether there is an increased risk of infection for this approach, and (ii) whether the spectrum of microorganisms differs between patients with DAA and those with lateral transgluteal approach (LAT). METHODS: All patients operated between 08/2006 and 12/2013 were followed prospectively in an in house register...
November 14, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27822002/limited-benefits-of-the-direct-anterior-approach-in-primary-hip-arthroplasty-a-prospective-single-centre-cohort-study
#14
Jetse Jelsma, Rik Pijnenburg, Harm W Boons, Peter J M G Eggen, Lucas L A Kleijn, Herman Lacroix, Hub J Noten
BACKGROUND: Since years a discussion is held on the best approach to perform total hip replacement (THR). Risk of dislocation, abductor weakness and a possible difference in rehabilitation are mentioned. We performed this study to objectify that the use of the direct anterior approach (DAA) results in a faster rehabilitation after THR compared to the non-DAA (posterolateral and anterolateral) approach. METHODS: A single centre prospective cohort study was conducted...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27741218/fat-replacement-of-paraspinal-muscles-with-aging-in-healthy-adults
#15
Julia R Dahlqvist, Christoffer R Vissing, Gitte Hedermann, Carsten Thomsen, John Vissing
PURPOSE: The aims of this study were to investigate the age-related changes in fatty replacement and cross-sectional area (CSA) of cervical, thoracic, and lumbar paraspinal muscles versus leg muscles in healthy adults and to test for association between muscle fat fraction and lifestyle factors. METHODS: Fifty-three healthy adults (24-76 yr) were included. Dixon magnetic resonance imaging technique was used to determine CSA and to quantify the fat fraction of paraspinal and leg muscles...
March 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27672438/treatment-of-postoperative-sciatic-nerve-palsy-after-total-hip-arthroplasty-for-postoperative-acetabular-fracture-a-case-report
#16
Akio Kanda, Kazuo Kaneko, Osamu Obayashi, Atsuhiko Mogami, Itaru Morohashi
Acetabular fracture is usually treated with osteosynthesis. However, in the case of an intra-articular fracture, osteosynthesis can result in arthropathy of the hip joint and poor long-term results, hence, total hip arthroplasty is required. However, in total hip arthroplasty for postoperative acetabular fracture, sciatic nerve palsy tends to develop more commonly than after primary total hip arthroplasty. This is a case report of a 57-year-old Japanese male who had internal skeletal fixation for a left acetabular fracture that had occurred 2 years earlier...
November 2016: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/27658640/24%C3%A2-hours-stay-after-hip-replacement
#17
Yannick N T Van Den Eeden, Bruno J G De Turck, Frank M C Van Den Eeden
Background and purpose - The length of stay after total hip arthroplasty has been reduced to 2-4 days after implementing fast-track surgery. We investigated whether a new time-based patient-centered primary direct anterior approach (DAA) total hip arthroplasty (THA) treatment protocol in a specialized clinic, with a planned length of stay of about 24 hours, could be achieved in all patients or only in a selected group of patients. Patients and methods - We analyzed prospectively collected data in a cohort of 378 consecutive patients who underwent a primary direct anterior THA as a patient-centered time-based procedure between March 1, 2012 and December 31, 2015...
February 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/27475898/acetabular-labral-debridement-segmental-resection-versus-reconstruction-in-the-comprehensive-treatment-of-symptomatic-femoroacetabular-impingement-a-systematic-review
#18
Csaba Forster-Horvath, Noah von Rotz, Brian D Giordano, Benjamin G Domb
PURPOSE: To perform a systematic review comparing outcomes of labral debridement/segmental resection with labral reconstruction as part of a comprehensive treatment strategy for femoroacetabular impingement. METHODS: A systematic review was conducted according to established PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) guidelines using defined inclusion and exclusion criteria. The study groups were divided into labral debridement/segmental resection (group 1) and labral reconstruction (group 2)...
July 27, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27461924/transtrochanteric-rotational-osteotomy-for-avascular-necrosis-of-the-femoral-head-after-unstable-slipped-capital-femoral-epiphysis-10-year-clinical-results
#19
Yasuharu Nakashima, Takuaki Yamamoto, Jun-Ichi Fukushi, Goro Motomura, Satoshi Hamai, Yusuke Kohno, Yukihide Iwamoto
BACKGROUND: Avascular necrosis of the femoral head (AVN) is the most serious complication after unstable slipped capital femoral epiphysis (SCFE), and is often unsalvageable. We report a minimum 10 years of clinical results for transtrochanteric rotational osteotomy of the femoral head (TRO) for AVN. METHODS: This study included 7 patients (7 hips) with a mean age at surgery of 13.3 years, and the follow-up period was 15.8 years. All patients had prior treatment via closed reduction and pinning of the unstable SCFE, and showed severely collapsed femoral heads...
November 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27425041/variable-surgical-outcomes-after-hospital-consolidation-implications-for-local-health-care-delivery
#20
Victor Chang, Robert H Blackwell, Ryan M Yau, Stephanie Besser, Joslyn M Albright, Gopal N Gupta, Paul C Kuo, Anai N Kothari
BACKGROUND: With more hospital consolidations as an inevitable part of our future health care ecosystem, we investigated the relationship between hospital consolidations and operative outcomes. METHODS: Using the Health Care Cost and Utilization Project State Inpatient Database (Florida and California), the American Hospital Association Annual Survey Database, and Medicare's Case Mix Index data, we identified 19 hospitals that consolidated between 2007 and 2013 and propensity matched them with 19 independent hospitals, using patient and hospital characteristics...
November 2016: Surgery
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