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Knee substitution

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https://www.readbyqxmd.com/read/27908550/estimated-height-from-knee-height-or-ulna-length-and-self-reported-height-are-no-substitute-for-actual-height-in-inpatients
#1
Flávia Moraes Silva, Luciane Figueira
OBJECTIVE: The aim of this study was to evaluate the precision of estimated height from ulna length (UL) using the Malnutrition Universal Screening Tool (MUST) equation and compare it with predicted height from knee height (KH), and self-reported height in estimating actual body height in inpatients. METHODS: This cross-sectional study was carried out with patients admitted to an emergency service of a tertiary public hospital. Data were collected, at the patients' bedsides, from a specific questionnaire and anthropometric measurements...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27900340/retropatellar-accessory-portals-for-improved-access-to-the-patella-anatomic-description-and-evaluation-of-safety
#2
Jason L Koh, Anthony L Logli
BACKGROUND: Standard knee arthroscopy portals are frequently used to address retropatellar chondral pathology. Alternative portals may offer a safe and simple substitute, particularly when reaching the base of deep lesions is required. PURPOSE: To describe and assess the safety of accessory retropatellar portals. STUDY DESIGN: Descriptive laboratory study. METHODS: An anatomic study was performed on 10 fresh-frozen cadaveric knees...
November 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27884644/evaluating-augmentation-with-calcium-phosphate-cement-chronos-inject-for-bone-defects-after-internal-fixation-of-proximal-tibial-fractures-a-prospective-multi-center-observational-study
#3
Ki Chul Park, Chang-Wug Oh, Young-Hoon Jo
INTRODUCTION: Managing subchondral bone defects in proximal tibia fractures after plateau reduction is an important consideration.ChronOSInjectis a recently developed calcium phosphate bone substitute that shows relatively fast osteointegration. HYPOTHESIS: UsingchronOS Inject during internal fixation of proximal tibial fractures provides a satisfactory treatment option that is both clinically and radiologically safe. MATERIALS AND METHODS: Patients enrolled in this study were treated with ChronOS Injectbone void filler, during internal fixation of proximal tibial fractures...
November 21, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27856067/posterior-cruciate-ligament-retention-or-substitution-during-total-knee-arthroplasty-does-not-affect-long-term-bone-mineral-density-or-quality
#4
Yoshinori Ishii, Hideo Noguchi, Junko Sato, Koji Todoroki, Shin-Ichi Toyabe
BACKGROUND: Physical activity is recognized as one of the factors that influence bone mineral density (BMD) and bone quality after total knee arthroplasty (TKA). According to biomechanical analyses after posterior cruciate ligament (PCL) retaining (PCLR) and substituting (PCLS) TKA, each implant design has different kinematics and kinetics. The purposes of this study were: (1) to perform within-patient comparisons of the midterm and long-term effects of PCL retention in mobile-bearing TKA on proximal femur and tibia BMD and calcaneus bone quality measured using ultrasound and (2) to identify correlations between them...
October 26, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27855716/kinematic-analysis-of-posterior-stabilized-total-knee-arthroplasty-during-standing-up-from-and-sitting-down-on-a-chair
#5
Takatomo Mine, Kenji Hoshi, Kazuyoshi Gamada, Koichiro Ihara, Hiroyuki Kawamura, Ryutaro Kuriyama, Ryo Date
BACKGROUND: Total knee arthroplasty is effective to regain quality of life. Standing up from and sitting down on a chair and stair stepping motion are important in daily living. We previously reported in vivo kinematics of this implant during a stepping exercise. The purpose of this analysis was to assess in vivo knee motion during standing up from and sitting down on a chair and determine the motion pattern in patients with the unique knee prosthesis. METHODS: A total of 15 patients implanted with Bi-Surface PS were assessed during standing up from and sitting down on a chair...
November 17, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27846352/-risk-factors-and-frequency-in-re-ruptures-of-the-anterior-cruciate-ligament-in-adults
#6
M L Velázquez-Rueda, J P Martínez-Ávila, A G Pérez-Serna, F Gómez-García
BACKGROUND: The anterior cruciate ligament (ACL) takes part in the knees articular cinematic regulation, which is why its rupture should be repaired as soon as possible. The surgical treatment is targeted to substitute the ruptured ACL with a graft that recreates the anatomical and biomechanical functions. Nevertheless, there are different factors that may produce a second rupture. OBJECTIVE: To determine the risk factors and frequency of failure in the ACL reconstruction...
March 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27837219/acl-substitution-may-improve-kinematics-of-pcl-retaining-total-knee-arthroplasty
#7
Thomas Zumbrunn, Michael P Duffy, Harry E Rubash, Henrik Malchau, Orhun K Muratoglu, Kartik Mangudi Varadarajan
PURPOSE: One of the key factors responsible for altered kinematics and joint stability following contemporary total knee arthroplasty (TKA) is resection of the anterior cruciate ligament (ACL). However, ACL retention can present several technical challenges, and in some cases may not be viable due to an absent or nonfunctional ACL. Therefore, the goal of this research was to investigate whether substitution of the ACL through an anterior post mechanism could improve kinematic deficits of contemporary posterior cruciate ligament (PCL) retaining implants...
November 11, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27837209/-operative-treatment-in-orthopedics-and-trauma-surgery-are-more-operations-carried-out-in-germany
#8
P Garcia, C Domnick, G Lodde, M J Raschke
BACKGROUND: Since 2005, when the Diagnosis-Related Group (DRG) system was introduced, an increasing number of surgical procedures have been reported in Germany. In particular, the numbers of elective arthroplasty and spinal surgery procedures have been controversial. OBJECTIVES: The focus of this study was analyzing the development of spinal surgery, arthroplasty, and fracture management. MATERIALS AND METHODS: We analyzed the database for all musculoskeletal operating procedure codes (OPS codes 5‑78 to 5‑86) from 2005 to 2013 collected by the German Federal Statistical Office...
November 11, 2016: Der Unfallchirurg
https://www.readbyqxmd.com/read/27757780/comparison-of-osteoconductivity-and-absorbability-of-beta-tricalcium-phosphate-and-hydroxyapatite-in-clinical-scenario-of-opening-wedge-high-tibial-osteotomy
#9
Kwang-Jun Oh, Young-Bong Ko, Sagar Jaiswal, In-Cheul Whang
The purpose of this study was to compare the osteoconductivity, and absorbability of hydroxyapatite or beta-tricalcium phosphate in clinical scenario of opening wedge high tibial osteotomy Total 41 knees of 40 patients with follow up period of more than 1 year were enrolled. These patients were divided into two groups, Group I (22 knees, 21 patients) used hydroxyapatite and Group II (19 knees, 19 patients) used beta-tricalcium phosphate as a substitute in the opening gap. According to proven method, the osteoconductivity was assessed radiographically by the extent of new bone formation at osteotomy space and absorbability was evaluated by measuring the area occupied by substitute at immediate postoperative, postoperative 6 months and 1 year...
December 2016: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27753269/spondyloepiphyseal-dysplasia-omani-type-chst3-mutation-spectrum-and-phenotypes-in-three-indian-families
#10
Priyanka Srivastava, Himani Pandey, Divya Agarwal, Kausik Mandal, Shubha R Phadke
We describe three consanguineous Indian families with a distinct form of spondyloepiphyseal dysplasia (SED Omani type). It is an autosomal recessive disorder due to mutation in CHST3 gene. CHST3 gene encodes the enzyme chondroitin 6-O-sulfotransferase-1 (C6ST-1) which mediates the sulfation of proteoglycans, (chondroitin sulfate), in the extracellular matrix of cartilage. CHST3 gene was sequenced in probands from three different families with SED. In two families missense mutations (c.904G>C predicting the substitution D302H) and c...
October 18, 2016: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27733680/glycine-105-as-pivot-for-a-critical-knee-like-joint-between-cytoplasmic-and-transmembrane-segments-of-the-second-transmembrane-helix-in-ca2-atpase
#11
Takashi Daiho, Kazuo Yamasaki, Stefania Danko, Hiroshi Suzuki
The cytoplasmic actuator domain of the sarco(endo)plasmic reticulum Ca(2+)-ATPase undergoes large rotational movements that influence the distant transmembrane transport sites, and a long second transmembrane helix (M2) connected with this domain plays critical roles in transmitting motions between the cytoplasmic catalytic domains and transport sites. Here we explore possible structural roles of Gly(105) between the cytoplasmic (M2c) and transmembrane (M2m) segments of M2 by introducing mutations that limit/increase conformational freedom...
November 18, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27693054/a-randomized-clinical-trial-comparing-posterior-cruciate-stabilizing-vs-posterior-cruciate-retaining-prostheses-in-primary-total-knee-arthroplasty-10-year-follow-up
#12
Lauren A Beaupre, B Sharifi, D W C Johnston
BACKGROUND: This 10-year follow-up compares health-related quality of life (HRQL) and reoperations in 100 subjects who were randomized to receive posterior cruciate ligament substituting (PS) or posterior cruciate ligament retaining (CR) total knee arthroplasty. We previously reported 2-year results. METHODS: Subjects were enrolled preoperatively and randomized at surgery. Subjects completed HRQL questionnaires at all evaluation points. Subjects were re-evaluated at 2 and 10 years with reoperations determined through regional medical record review and patient report...
September 8, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27680889/efficacy-of-%C3%AE-tricalcium-phosphate-graft-into-the-bone-defects-after-bone-patellar-tendon-bone-anterior-cruciate-ligament-reconstruction
#13
Hiroshi Higuchi, Atsushi Kobayashi, Keiko Ikeda, Kazuhisa Hatayama, Sinya Yanagisawa, Kazuo Kato
This prospective pilot study investigated whether grafting β-tricalcium phosphate (B-TCP) into the bone-patellar tendon-bone (BPTB)-harvesting site after anterior cruciate ligament reconstruction would accelerate bone and tendon regeneration in the grafted site. Overall, 19 patients agreed prospectively to undergo regular morphological and histological examinations of the B-TCP-grafted site. Postoperative radiographic, ultrasonographic, and magnetic resonance imaging (MRI) examinations were performed to evaluate the grafted site at 1, 3, 6, and 12 months...
September 28, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27659044/no-difference-in-range-of-motion-between-ultracongruent-and-posterior-stabilized-design-in-total-knee-arthroplasty-a-randomized-controlled-trial
#14
Jörg Lützner, Franziska Beyer, Julian Dexel, Hagen Fritzsche, Cornelia Lützner, Stephan Kirschner
PURPOSE: The use of an ultracongruent (UC) insert with a standard femoral component for substitution of the posterior cruciate ligament (PCL) is a bone-preserving and therefore interesting alternative to the established box and cam mechanism of posterior stabilized (PS) total knee arthroplasty (TKA). This study investigated range of motion (ROM), stability and patient-reported outcome (PRO) in UC and PS TKA. We hypothesized better knee flexion with the PS design but no difference in stability and PRO between UC and PS TKA...
September 22, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27650527/quadriceps-strength-impairment-in-the-mid-to-long-term-follow-up-period-after-total-knee-arthroplasty
#15
Yoshinori Ishii, Hideo Noguchi, Junko Sato, Tetsuya Sakurai, Shin-Ichi Toyabe
PURPOSE: Quadriceps strength impairment after total knee arthroplasty (TKA) continues to be a concern. However, most studies of quadriceps strength have short-term follow-up periods. Whether quadriceps strength impairment occurs in the long-term follow-up period after TKA remains unclear. The purpose of this study was to compare the quadriceps strength between posterior cruciate ligament-retaining (CR) and substituting (PS) design mobile-bearing TKA (1) in the same patients after an average of 10 years and (2) between TKA patients and age-matched controls...
September 20, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27625029/a-novel-mutation-in-helical-domain-2-of-nod2-in-sporadic-blau-syndrome
#16
Lubhani Jain, Namrata Gupta, Mamatha M Reddy, Ruchi Mittal, Manas Ranjan Barik, Bharat Panigrahi, Tom Monie, Soumyava Basu
We report a 12-year-old girl who presented with bilateral granulomatous anterior uveitis accompanied by boggy arthritis of knee and ankle joints, intermittent fever, and nodular skin rash. She was diagnosed with sporadic Blau syndrome (early-onset sarcoidosis) based on above clinical signs and presence of non-necrotising granuloma on iris biopsy. DNA sequencing revealed a previously unreported heterozygous mutation consisting of a G>A transition in exon 4 of the NOD2 gene. This resulted in a glutamic acid to lysine substitution in helical domain 2 of the nucleotide binding and oligomerization (NACHT) region, possibly reducing efficiency of auto-inhibition in NOD2 signaling...
September 13, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27546988/operative-technique-and-morbidity-of-superficial-femoral-vein-harvest
#17
A Neufang, S Savvidis
BACKGROUND: The use of autologous superficial femoral veins (SFV) as an arterial or venous substitute represents a valuable technique in modern vascular surgery with versatile indications. The SFV autografts exhibit excellent control of infection and durable long-term results in terms of graft patency in prosthetic or arterial infections. In cases of elective use of the SFV, duplex ultrasound evaluation of the deep leg vein system should be implemented to confirm the patency of the profunda femoris vein...
2016: Gefässchirurgie: Zeitschrift Für Vaskuläre und Endovaskuläre Chirurgie
https://www.readbyqxmd.com/read/27546474/noise-generation-with-good-range-of-motion-but-without-femorotibial-instability-has-small-effect-on-patient-satisfaction-after-total-knee-arthroplasty
#18
Shinichi Kuriyama, Masahiro Ishikawa, Shinichiro Nakamura, Moritoshi Furu, Hiromu Ito, Shuichi Matsuda
BACKGROUND: There are several causes of patient dissatisfaction after total knee arthroplasty (TKA). This study hypothesized that noise occurring in the knee would worsen patient satisfaction after TKA. METHODS: We mailed a newly developed questionnaire to 103 consecutive participants who were followed for one year, resulting in data from 61 knees in 60 patients (47 women and 13 men, mean age 73 years) who underwent cruciate-substituting TKA. We evaluated postoperative range of motion, knee instability, and the 2011 Knee Society Score in terms of noise generation after TKA...
July 21, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27491660/three-dimensional-measurement-of-minimum-joint-space-width-in-the-knee-from-stereo-radiographs-using-statistical-shape-models
#19
E A van IJsseldijk, E R Valstar, B C Stoel, R G H H Nelissen, N Baka, R Van't Klooster, B L Kaptein
OBJECTIVES: An important measure for the diagnosis and monitoring of knee osteoarthritis is the minimum joint space width (mJSW). This requires accurate alignment of the x-ray beam with the tibial plateau, which may not be accomplished in practice. We investigate the feasibility of a new mJSW measurement method from stereo radiographs using 3D statistical shape models (SSM) and evaluate its sensitivity to changes in the mJSW and its robustness to variations in patient positioning and bone geometry...
August 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27491284/squamous-cell-carcinoma-in-chronic-osteomyelitis-a-case-report-and-review-of-the-literature
#20
Gaetano Caruso, Emanuele Gerace, Vincenzo Lorusso, Rosario Cultrera, Loredana Moretti, Leo Massari
BACKGROUND: Chronic osteomyelitis is a challenging problem, and malignant transformation is a rare occurrence. We report a case of a patient with squamous cell carcinoma arising from an osteomyelitic hotbed and discuss through a literature review the etiopathogenesis, diagnosis, and treatment of this lesion. CASE PRESENTATION: A 69-year-old Italian man had sustained an exposed tibial fracture 40 years ago during a road accident, for which he had undergone various surgical osteosynthesis treatments with multiple antibiotic therapies...
2016: Journal of Medical Case Reports
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