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Hip preservation

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https://www.readbyqxmd.com/read/29672284/induction-of-pluripotent-stem-cell-derived-cardiomyocyte-toxicity-by-supernatant-of-long-term-stored-red-blood-cells-in-vitro
#1
Fengyan Fan, Yang Yu, Liping Sun, Shufang Wang, Rui Wang, Leiying Zhang, Cuiying Li, Deqing Wang
BACKGROUND/AIMS: Preserved red blood cells (RBCs) in vitro undergo a series of morphological, functional and metabolic changes during storage. RBC metabolites accumulate over time during storage, the toxicity of the supernatants of RBCs (SSRBCs) on tissue cells is largely unknown. Here, we aimed to study cardiomyocyte toxicity by supernatant of long term-stored RBCs in vitro and to discover elements involved in the mechanism. METHODS: Using human-induced pluripotent stem cell-derived cardiomyocytes (hiPS-CMs) and real-time cell analyzing (RTCA), we analyzed the cardiotoxicity of d0, d14 and d35 SSRBCs...
April 16, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29661229/can-arthroplasty-stem-influence-outcome-casino-a-randomized-controlled-equivalence-trial-of-125-mm-versus-150-mm-exeter-v40-stems-in-total-hip-arthroplasty
#2
David F Hamilton, Nicholas E Ohly, Paul Gaston
BACKGROUND: The use of shorter length femoral stems during total hip arthroplasty has been suggested to accommodate wider patient femoral geometry and offer maximal bone preservation. However, cemented short-stem designs may increase the risk of varus stem malalignment and influence patient outcomes. METHODS/DESIGN: CASINO is a multi-centre randomised equivalence trial that will recruit 220 patients undergoing total hip arthroplasty for osteoarthritis at two NHS hospitals in Scotland...
April 16, 2018: Trials
https://www.readbyqxmd.com/read/29656967/conversion-vs-primary-total-hip-arthroplasty-increased-cost-of-care-and-perioperative-complications
#3
Sean P Ryan, Marcus DiLallo, David E Attarian, William A Jiranek, Thorsten M Seyler
BACKGROUND: With the increasing incidence of hip fractures and hip preservation surgeries, there has been a concomitant rise in the number of conversion total hip arthroplasties (THAs) performed. Prior studies have shown higher complication rates in conversion THA. However, there is a paucity of data showing differences in cost between these 2 procedures. Currently, the Center for Medicare and Medicaid Services bundles primary and conversion THA in the same Medicare Severity-Diagnosis Related Group for hospital reimbursement...
March 15, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29652237/failure-of-facet-replacement-system-with-metal-on-metal-bearing-surface-and-subsequent-discovery-of-cobalt-allergy-report-of-2-cases
#4
Matthew L Goodwin, William Ryan Spiker, Darrel S Brodke, Brandon D Lawrence
The aim of this study was to report on 2 patients in whom metal-on-metal (MOM) facet replacements failed, with subsequent positive findings on allergy testing. Motion-preserving devices have been used with limited success when instrumentation is indicated in the mobile spine. MOM-bearing surfaces in orthopedics were developed to increase implant longevity, yet have been associated with numerous adverse outcomes, including local tissue reactions, pseudotumors, metallosis, and the need for revision surgery. Five patients with spinal stenosis and low-grade spondylolisthesis were randomized to undergo facet replacement surgery with the ACADIA facet replacement system at the authors' institution...
April 13, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29651610/periprosthetic-femoral-fracture-as-cause-of-early-revision-after-short-stem-hip-arthroplasty-a-multicentric-analysis
#5
Sang-Min Kim, Seung-Beom Han, Kee Hyung Rhyu, Jeong Joon Yoo, Kwang-Jun Oh, Je Hyun Yoo, Kyung-Jae Lee, Seung-Jae Lim
BACKGROUND: The objective of this study was to analyze the prevalence and causes of early re-operation after hip replacement surgery using short bone-preserving stems in a large multicentre series. Specifically, we evaluated the clinical features of periprosthetic fractures occurring around short stems. METHODS: A total of 897 patients (1089 hips) who underwent primary total hip arthroplasty or bipolar hemiarthroplasty from January 2011 to February 2015 using short bone-preserving femoral stems were recruited...
April 12, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29651575/assessment-of-pelvic-tilt-in-anteroposterior-radiographs-by-means-of-tilt-ratios
#6
T Schwarz, A Benditz, H-R Springorum, J Matussek, G Heers, M Weber, T Renkawitz, J Grifka, B Craiovan
INTRODUCTION: In anteposterior (AP) radiographs, cup position in total hip arthroplasty and acetabular anatomy in hip-preserving surgery are highly influenced by pelvic tilt. The sagittal rotation of the anterior pelvic plane is an important measurement of pelvic tilt during hip surgery. Thus, correct evaluation of cup position and acetabular parameters requires the assessment of pelvic tilt in AP radiographs. METHODS: Changes in pelvic tilt inversely change the height of the lesser pelvis and the obturator foramen in AP radiographs...
April 12, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29644322/conservative-treatment-of-periprosthetic-femur-fractures-around-metaphyseal-short-stems-a-feasible-option
#7
K Toth, H Gality, K Gion, K Sisak
Periprosthetic femoral fractures are rare but significant events following total hip replacement. Metaphyseal short stems have recently been popularized as a bone preserving alternative to conventional uncemented total hip replacement. We present two periprosthetic femur fractures which occurred around two different metaphyseal uncemented stem designs. Successful conservative treatment was possible in both cases achieving bony union and excellent clinical results.
June 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29643694/bone-preserving-techniques-for-explanting-the-well-fixed-cemented-acetabular-component
#8
Jarrad Stevens, Gavin Macpherson, Colin Howie
Background: Removal of a well-fixed, cemented acetabular component at the time of revision hip surgery can be complex. It is essential to remove the implant and cement mantle in a timely fashion while preserving bone stock and osseous integrity. The biomechanical properties of polymethylmethacrylate cement and polyethylene can be utilised to aid with the removal of well cemented implants which are often harder than the surrounding bone. While removal of loose components may be relatively straightforward, the challenge for the revision arthroplasty surgeon often involves the removal of well-fixed implants...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29622264/editorial-commentary-a-hip-scope-scoping-review-on-surgical-outcome-reporting-if-you-want-to-know-the-answer-you-have-to-ask-the-question
#9
EDITORIAL
Joshua D Harris
The existing literature on subjects with femoroacetabular impingement syndrome undergoing arthroscopic or open hip preservation surgery reveals that outcome reporting is heterogeneous. There is significant inconsistency in patient-reported outcome scores collected, symptoms and complaints assessed, clinical signs evaluated, and pre- and postoperative imaging metrics measured.
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29619500/early-stage-osteonecrosis-of-the-femoral-head-where-are-we-and-where-are-we-going-in-year-2018
#10
REVIEW
Eric Larson, Lynne C Jones, Stuart B Goodman, Kyung-Hoi Koo, Quanjun Cui
Osteonecrosis of the femoral head (ONFH) is a devastating condition affecting relatively young patients whereby the femoral head is necrotic, resulting in significant pain, articular surface collapse, and eventual osteoarthritis. This condition has been highly associated with chronic steroid use, alcoholism, and hip trauma, as well as other less common conditions. Without intervention, this condition has a high likelihood of progressing and developing into end-stage osteoarthritis. Unfortunately, ONFH is difficult to diagnose on plain radiographs in the early stages of the disease, and often requires more advanced imaging modalities such as MRI in order to fully assess for early degeneration...
April 4, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29617448/ranking-of-osteogenic-potential-of-physical-exercises-in-postmenopausal-women-based-on-femoral-neck-strains
#11
Pim Pellikaan, Georgios Giarmatzis, Jos Vander Sloten, Sabine Verschueren, Ilse Jonkers
The current study aimed to assess the potential of different exercises triggering an osteogenic response at the femoral neck in a group of postmenopausal women. The osteogenic potential was determined by ranking the peak hip contact forces (HCFs) and consequent peak tensile and compressive strains at the superior and inferior part of the femoral neck during activities such as (fast) walking, running and resistance training exercises. Results indicate that fast walking (5-6 km/h) running and hopping induced significantly higher strains at the femoral neck than walking at 4 km/h which is considered a baseline exercise for bone preservation...
2018: PloS One
https://www.readbyqxmd.com/read/29589046/-surgical-therapy-of-ischiofemoral-impingement-by-lateralizing-intertrochanteric-osteotomy
#12
REVIEW
C Suren, R Burgkart, I J Banke, G Hertel, J Schauwecker, R von Eisenhart-Rothe, H Gollwitzer
OBJECTIVE: Lateralizing, derotating intertrochanteric varus osteotomy to increase the ischiofemoral space to counter painful impingement of the lesser trochanter and the os ischium with resulting entrapment of quadratus femoris muscle. INDICATIONS: Symptomatic ischiofemoral impingement (IFI) caused by Coxa valga et antetorta, Coxa valga or Coxa antetorta, or a short femoral neck. CONTRAINDICATIONS: Anatomic configuration suggestive of IFI in asymptomatic patients...
March 27, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29584580/differences-in-timed-up-and-go-subtasks-between-older-people-with-mild-cognitive-impairment-and-mild-alzheimer-s-disease
#13
Juliana Hotta Ansai, Larissa Pires de Andrade, Paulo Giusti Rossi, Theresa Helissa Nakagawa, Francisco Assis Carvalho Vale, José Rubens Rebelatto
This study compared performances of timed up and go test subtasks between 40 older people with preserved cognition, 40 with mild cognitive impairment, and 38 with mild Alzheimer's disease. The assessment consisted of anamneses and timed up and go test subtasks (sit-to-stand, walking forward, turn, walking back, and turn-to-sit). Data were captured by Qualisys Track Manager software and processed by Visual3D software. The MATLAB program was applied to detect and analyze timed up and go test subtasks. All subtasks differentiated people with Alzheimer's disease and preserved cognition, except the sit-to-stand subtask, which did not distinguish any group...
March 27, 2018: Motor Control
https://www.readbyqxmd.com/read/29582118/reverse-total-shoulder-arthroplasty-using-helical-blade-to-optimize-glenoid-fixation-and-bone-preservation-preliminary-results-in-thirty-five-patients-with-minimum-two-year-follow-up
#14
Sebastien Zilber, Eleonora Camana, Peter Lapner, Emil Haritinian, Laurent Nove Josserand
PURPOSE: Glenoid loosening is a common cause of reverse total shoulder arthroplasty (RTSA) failure, and grafting of the glenoid is often required for revision due to bone loss due to the central peg in most glenoid baseplates. Helical blades have been used in the hip to optimize bone fixation in proximal femoral fracture. This study presents the initial results of specifically designed helical blade in the shoulder to optimize glenoid bone fixation and preservation as part of RTSA. METHODS: Thirty-five patients underwent RTSA with glenoid helical blade fixation...
March 26, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29576639/total-hip-arthroplasty-by-the-direct-anterior-approach-using-a-neck-preserving-stem-safety-efficacy-and-learning-curve
#15
Aditya Khemka, Omar Mograby, Sarah J Lord, Zelda Doyle, Munjed Al Muderis
Background: The concept of femoral neck preservation in total hip replacement (THR) was introduced in 1993. It is postulated that retaining cortical bone of the femoral neck offers triplanar stability, uniform stress distribution, and accommodates physiological anteversion. However, data on safety, efficacy and learning curve are lacking. Materials and Methods: We prospectively assessed all patients who were operated for a THR with a short neck preserving stem (MiniHip) between 2012 and 2014...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29569139/bone-preserving-total-hip-arthroplasty-in-avascular-necrosis-of-the-hip-a-matched-pairs-analysis
#16
David Merschin, Richard Häne, Mersedeh Tohidnezhad, Thomas Pufe, Wolf Drescher
PURPOSE: Short-stem hip arthroplasty has the potential advantage of femoral bone stock preservation, especially in view of the expected revisions in the often relatively young patients. Despite short-stem hip prosthesis are increasingly used for total hip arthroplasty, there are no sufficient mid- and long-term results especially for patients with avascular femoral head osteonecrosis. The present study investigates mid-term functional results as well as the revision rate following implantation of a short-stem prosthesis...
March 22, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29560397/biarticular-total-femur-spacer-for-massive-femoral-bone-loss-the-mobile-solution-for-a-big-problem
#17
Pablo Sanz-Ruiz, Jose Antonio Calvo-Haro, Manuel Villanueva-Martinez, Jose Antonio Matas-Diez, Javier Vaquero-Martín
Bone cement spacers loaded with antibiotic are the gold standard in septic revision. However, the management of massive bone defects constitutes a surgical challenge, requiring the use of different nails, expensive long stems, or cement-coated tumor prostheses for preparing the spacer. In most cases, the knee joint must be sacrificed. We describe a novel technique for preparing a biarticular total femur spacer with the help of a trochanteric nail coated with antibiotic loaded cement, allowing mobility of the hip and knee joints and assisted partial loading until second step surgery...
March 2018: Arthroplasty Today
https://www.readbyqxmd.com/read/29552464/the-bird-s-eye-and-upper-deck-views-in-hip-arthroscopy-powerful-arthroscopic-perspectives-for-acetabuloplasty
#18
Victor Ortiz-Declet, Brian Mu, Austin W Chen, Jody Litrenta, Leslie C Yuen, Stephanie M Rabe, Benjamin G Domb
Arthroscopic acetabuloplasty involves trimming of bone from the acetabular rim. Although early techniques often involved detachment of the labrum prior to bone resection, recent studies have reported on acetabuloplasty without labral detachment. This method has the benefit of preserving the labro-osseous junction, but visualization of the acetabular rim may be more difficult. Compromised visualization can lead to incomplete resection and residual impingement. We describe an arthroscopic perspective called the "bird's eye" and "upper deck" views that facilitates optimal visualization of the acetabuloplasty without labral detachment...
January 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29541811/subchondral-fracture-begins-from-the-bone-resorption-area-in-osteonecrosis-of-the-femoral-head-a-micro-computerised-tomography-study
#19
Hidetoshi Hamada, Masaki Takao, Takashi Sakai, Nobuhiko Sugano
PURPOSE: For successful joint preservation in osteonecrosis of the femoral head (ONFH), it is important to understand the mechanism of collapse. The purpose of this study was to investigate the initiation of subchondral fracture in ONFH by using micro-CT imaging of the whole femoral head, focusing on the three-dimensional relationship between the subchondral fracture and the bone resorption area. METHODS: A total of 40 femoral heads from 37 patients retrieved during total hip arthroplasty for stage 3A or 3B ONFH by Japanese Investigation Committee criteria were scanned using micro-CT with a 0...
March 14, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29536682/-application-of-tri-lock-bone-preservation-stem-in-acetabular-protrusion-combined-with-shorten-defect-of-femoral-head-and-neck
#20
Jun Liu, Ping Zhen, Sheng-Hu Zhou, Qi Tian, Hui Chen, Wei Wang, Xiao-le He, Xu-Sheng Li
OBJECTIVE: To evaluate the manipulation technique and clinical outcome of Tri-Lock bone preservation stem for acetabular protrusion combined with shorten defect of femoral head and neck. METHODS: From January 2013 to December 2015, 10 patients(12 hips) with acetabular protrusion combined with shorten defect of femoral head and neck were treated with total hip arthroplasty(THA) including 5 males and 5 female with an average age of(51.6±3.0) years old ranging from 42...
February 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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