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Joint laxity

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https://www.readbyqxmd.com/read/29691175/correlation-between-intraoperative-anterior-stability-and-flexion-gap-in-total-knee-arthroplasty
#1
Shinichiro Nakamura, Shinichi Kuriyama, Kohei Nishitani, Hiromu Ito, Koichi Murata, Shuichi Matsuda
BACKGROUND: Instability is a common failure mode after total knee arthroplasty. There have been only a few methods to quantify anterior translation with fixed forces applied during surgery. The purpose of the study was to measure the anterior translation with a new device and to analyze the relationships between the amount of anterior translation and the joint gaps. METHODS: Fifty knees with medial osteoarthritis underwent surgery using a posterior-stabilized implant...
March 21, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29687534/higher-prevalence-of-joint-hypermobility-in-constipation-predominant-irritable-bowel-syndrome
#2
A Zweig, V Schindler, A S Becker, A van Maren, D Pohl
BACKGROUND: Joint hypermobility syndrome (JHS) is characterized by excessive connective tissue laxity manifest as joint hypermobility (JH) together with musculoskeletal symptoms. Previous studies have shown an association between JH/JHS and gastrointestinal symptoms, including irritable bowel syndrome (IBS), although its association with specific IBS subtypes is incompletely understood. We aimed to determine the prevalence of JH according to the subtypes of IBS, in particular IBS-C and IBS-D...
April 23, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29685502/effects-of-pre-operative-knee-laxity-on-clinical-outcomes-after-partial-anterior-cruciate-ligament-reconstruction
#3
Bin Li, Guang-Bin Wang, Yan-Fang Wang, Bing-Zheng Zhou
BACKGROUND: The effects of retaining residual bundles on surgical outcomes has not been observed, so we evaluated the effects of preoperative knee laxity on clinical outcomes after partial anterior cruciate ligament (ACL) reconstruction for partial ACL rupture in this study. PURPOSE: To evaluate the effects of preoperative knee laxity on clinical outcomes after partial anterior cruciate ligament (ACL) reconstruction for partial ACL rupture. METHODS: The data of 47 patients, who had partial ACL rupture and underwent partial ACL reconstruction, were retrospectively analyzed...
April 20, 2018: Knee
https://www.readbyqxmd.com/read/29680905/intraoperative-soft-tissue-balance-using-novel-medial-preserving-gap-technique-in-posterior-stabilized-total-knee-arthroplasty-comparison-to-measured-resection-technique
#4
Kanto Nagai, Hirotsugu Muratsu, Yutaro Kanda, Masanori Tsubosaka, Tomoyuki Kamenaga, Hidetoshi Miya, Takehiko Matsushita, Takahiro Niikura, Ryosuke Kuroda, Tomoyuki Matsumoto
PURPOSE: To investigate intraoperative soft tissue balance with femoral component trial in place using a novel medial preserving gap technique, focusing on medial compartment stability and allowing lateral physiological laxity, with compared with using a measured resection technique in posterior-stabilized (PS) total knee arthroplasty (TKA). METHODS: Primary PS TKA, using either medial preserving gap technique (n = 127) or measured resection technique (n = 148), was performed in 275 subjects with varus knee osteoarthritis...
April 21, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29657851/kinematic-alignment-technique-for-total-hip-and-knee-arthroplasty-the-personalized-implant-positioning-surgery
#5
Charles Rivière, Stefan Lazic, Loïc Villet, Yann Wiart, Sarah Muirhead Allwood, Justin Cobb
Conventional techniques for hip and knee arthroplasty have led to good long-term clinical outcomes, but complications remain despite better surgical precision and improvements in implant design and quality.Technological improvements and a better understanding of joint kinematics have facilitated the progression to 'personalized' implant positioning (kinematic alignment) for total hip (THA) and knee (TKA) arthroplasty, the true value of which remains to be determined.By achieving a true knee resurfacing, the kinematic alignment (KA) technique for TKA aims at aligning the components with the physiological kinematic axes of the knee and restoring the constitutional tibio-femoral joint line frontal and axial orientation and soft-tissue laxity...
March 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29656976/the-influence-of-postoperative-knee-stability-on-patient-satisfaction-in-cruciate-retaining-total-knee-arthroplasty
#6
Tomoyuki Kamenaga, Hirotsugu Muratsu, Yutaro Kanda, Hidetoshi Miya, Ryosuke Kuroda, Tomoyuki Matsumoto
BACKGROUND: Although knee stability is well known as an important element for the success of total knee arthroplasty (TKA), the direct relationship between clinical outcomes and knee stability is still unknown. The purpose of this study was to determine if postoperative knee stability and soft-tissue balance affect the functional outcomes and patient satisfaction after cruciate-retaining (CR) TKA. METHODS: Fifty-five patients with varus osteoarthritis of the knee who underwent CR TKA were included in this study, and their postoperative knee stability was assessed by stress radiography at extension and flexion 1 month postoperatively...
March 16, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29650414/joint-laxity-in-preschool-children-born-preterm
#7
Domenico M Romeo, Chiara Velli, Simona Lucibello, Gloria Ferrantini, Giuseppina Leo, Claudia Brogna, Francesco Cota, Daniela Ricci, Francesca Gallini, Costantino Romagnoli, Giovanni Vento, Eugenio Mercuri
OBJECTIVE: To evaluate the prevalence of joint laxity in children born preterm assessed in the first 2 years, the relationship between joint laxity and motor performance at preschool age, and possible changes over time in a subgroup of children followed longitudinally. STUDY DESIGN: The revised scale of Beighton Score was used to evaluate joint laxity in a population of 132 preschool children born preterm between 24 and 32 weeks of gestational age. All were assessed for joint laxity between 12 and 24 months of age...
April 9, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29642925/atypical-traumatic-anterior-shoulder-instability-with-excessive-joint-laxity-recurrent-shoulder-subluxation-without-a-history-of-dislocation
#8
Sung-Jae Kim, Chong-Hyuk Choi, Yun-Rak Choi, Wonyong Lee, Woo-Seok Jung, Yong-Min Chun
BACKGROUND: No previously published studies have examined recurrent traumatic incomplete events in patients with excessive joint laxity. The purpose of this study is to investigate outcomes after arthroscopic stabilization for recurrent traumatic shoulder subluxation in patients with excessive joint laxity but no history of dislocation. METHODS: This study included 23 patients with glenoid bone defects less than 20% who underwent arthroscopic stabilization of recurrent shoulder subluxation and were available for at least 2 years follow-up...
April 11, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29623400/biomechanical-properties-of-the-patellar-tendon-in-children-with-heritable-connective-tissue-disorders
#9
Jacob K Jensen, Rie H Nygaard, Rene B Svensson, Hanne D Hove, S Peter Magnusson, Michael Kjær, Christian Couppé
PURPOSE: Hereditary connective tissue disorders (HCTDs), such as classic Ehlers-Danlos syndrome (cEDS) and Marfan syndrome (MS) share overlapping features like hypermobility and tissue fragility. In clinical practice it remains a challenge to distinguish children and adolescents with HCTD from healthy children. The purpose of this study was to investigate the biomechanical properties of the patellar tendon and joint laxity (Beighton score) in children with HCTDs (n = 7) compared to healthy controls (n = 14)...
April 5, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29613925/determination-of-elbow-laxity-in-a-sequential-soft-tissue-injury-model-a-cadaveric-study
#10
Marc Schnetzke, Moritz Bergmann, Kilian Wegmann, Lars-Peter Müller, Stephan Grechenig, Paul-Alfred Grützner, Thorsten Guehring
BACKGROUND: The objective of our study was to analyze, under fluoroscopy, joint angulation of uninjured elbows and elbows with distinct induced collateral ligament injury. METHODS: Twelve elbow specimens were tested for varus and valgus joint angulation using 4 different examination methods (application of both varus and valgus stress by each of 2 examiners [Examiner 1 and Examiner 2] and application of 1 and 2 Nm of torque using a calibrated electric force scale) in 4 elbow positions (in full extension with 90° of supination and 90° of pronation, and in 30° of flexion with 90° of supination and 90° of pronation)...
April 4, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29606302/bi-allelic-alterations-in-aebp1-lead-to-defective-collagen-assembly-and-connective-tissue-structure-resulting-in-a-variant-of-ehlers-danlos-syndrome
#11
Patrick R Blackburn, Zhi Xu, Kathleen E Tumelty, Rose W Zhao, William J Monis, Kimberly G Harris, Jennifer M Gass, Margot A Cousin, Nicole J Boczek, Mario V Mitkov, Mark A Cappel, Clair A Francomano, Joseph E Parisi, Eric W Klee, Eissa Faqeih, Fowzan S Alkuraya, Matthew D Layne, Nazli B McDonnell, Paldeep S Atwal
AEBP1 encodes the aortic carboxypeptidase-like protein (ACLP) that associates with collagens in the extracellular matrix (ECM) and has several roles in development, tissue repair, and fibrosis. ACLP is expressed in bone, the vasculature, and dermal tissues and is involved in fibroblast proliferation and mesenchymal stem cell differentiation into collagen-producing cells. Aebp1-/- mice have abnormal, delayed wound repair correlating with defects in fibroblast proliferation. In this study, we describe four individuals from three unrelated families that presented with a unique constellation of clinical findings including joint laxity, redundant and hyperextensible skin, poor wound healing with abnormal scarring, osteoporosis, and other features reminiscent of Ehlers-Danlos syndrome (EDS)...
March 29, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29589491/risk-factors-for-progression-of-articular-cartilage-damage-after-anatomical-anterior-cruciate-ligament-reconstruction
#12
A Nakamae, N Adachi, M Deie, M Ishikawa, T Nakasa, Y Ikuta, M Ochi
Aims To investigate the risk factors for progression of articular cartilage damage after anatomical anterior cruciate ligament (ACL) reconstruction. Patients and Methods A total of 174 patients who underwent second-look arthroscopic evaluation after anatomical ACL reconstruction were enrolled in this study. The graded condition of the articular cartilage at the time of ACL reconstruction was compared with that at second-look arthroscopy. Age, gender, body mass index (BMI), ACL reconstruction technique, meniscal conditions, and other variables were assessed by regression analysis as risk factors for progression of damage to the articular cartilage...
March 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29576339/early-return-to-baseline-range-of-motion-and-strength-after-anterior-shoulder-instability-surgery-a-multicenter-orthopaedic-outcomes-network-moon-shoulder-group-cohort-study
#13
Joseph A Buckwalter V, Brian R Wolf, Natalie Glass, Matt Bollier, John E Kuhn, Carolyn M Hettrich
BACKGROUND: Patients often return to higher-level activities and sports at 4 to 8 months after anterior shoulder stabilization procedures. It is unknown what percentage of patients have regained normal function at this time frame and what factors predict residual deficits, range of motion (ROM), and strength after anterior shoulder instability surgery. METHODS: Ten participating sites throughout the United States enrolled patients in a prospective cohort study including primary, revision, arthroscopic, and open anterior stabilization procedures...
March 23, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29570751/applying-a-hybrid-experimental-computational-technique-to-study-elbow-joint-ligamentous-stabilizers
#14
Danial Sharifi Kia, Ryan Willing
Much of our understanding of the role of elbow ligaments to overall joint biomechanics has been developed through in vitro cadaver studies using joint motion simulators. The principle of superposition can be used to indirectly compute the force contributions of ligaments during prescribed motions. Previous studies have analyzed the contribution of different soft tissue structures to the stability of human elbow joints, but have limitations in evaluating the loads sustained by those tissues. This manuscript introduces a unique, hybrid experimental-computational technique for measuring and simulating the biomechanical contributions of ligaments to elbow joint kinematics and stability...
March 21, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29552689/characteristics-management-and-outcomes-of-spontaneous-osteonecrosis-of-the-knee-in-indian-population
#15
Nishit Bhatnagar, Siddharth Sharma, Virender Kumar Gautam, Ajeet Kumar, Anurag Tiwari
PURPOSE: Spontaneous osteonecrosis of the knee affects the medial femoral condyle in patients above 55 years of age. Many reports and studies are available from western countries. But there is a gross paucity of literature on spontaneous osteonecrosis of the knee (SPONK) in the Indian subcontinent, either it is under-reported or detected at a later stage. The aim of our study was to detect SPONK in Indian population and describe its characteristics, treatment, and outcome. MATERIAL AND METHOD: A prospective study was conducted over a period of three years...
March 18, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29540626/correlation-between-mechanical-properties-of-the-ankle-muscles-and-postural-sway-during-the-menstrual-cycle
#16
JongEun Yim, Jerrold Petrofsky, Haneul Lee
Ankle and foot injuries are common among athletes and physically active individuals. The most common residual disability, ankle sprain, is characterized by instability along with postural sway. If the supporting structures around a joint become lax, posture stability and balance are also affected. Previous studies have examined muscle stiffness and elasticity and postural sway separately; however, the relationship between these factors is yet unknown. It is well known that the levels of sex hormones, especially estrogen, change in women over the phase of the menstrual cycle...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29536137/-mediocarpal-instability-of-the-wrist
#17
REVIEW
A L Sander, K Sommer, K Eichler, I Marzi, J Frank
Typical lesions of the carpal ligaments are mostly found after a fall on the wrist in hyperextension or as complex injuries after severe trauma, e. g. after a fall from a significant height, motorcycle accident or as accompanying lesions in multiple trauma. The typical mechanisms, patterns and diagnostic algorithms are well known for the common ligamentous injuries (e.g. scapholunate, lunotriquetral and perilunate); therefore, consistent diagnostic procedures and adequate therapy are increasingly performed after such lesions, e...
March 13, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29535510/gene-expression-changes-in-knee-joint-tissues-with-aging-and-menopause-implications-for-the-joint-as-an-organ
#18
Natalie C Rollick, Devin B Lemmex, Yohei Ono, Carol R Reno, David A Hart, Ian Ky Lo, Gail M Thornton
Background: When considering the "joint as an organ", the tissues in a joint act as complementary components of an organ, and the "set point" is the cellular activity for homeostasis of the joint tissues. Even in the absence of injury, joint tissues have adaptive responses to processes, like aging and menopause, which result in changes to the set point. Purpose: The purpose of this study in a preclinical model was to investigate age-related and menopause-related changes in knee-joint tissues with the hypothesis that tissues will change in unique ways that reflect their differing contributions to maintaining joint function (as measured by joint laxity) and the differing processes of aging and menopause...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29533444/epidemiological-evidence-and-possible-mechanisms-for-the-association-between-cigarette-smoking-and-injuries-part-1
#19
Joseph J Knapik, Sheryl A Bedno
Surveys indicated that 24% of military personnel are current cigarette smokers. Smoking is well known to increase the risk of cancers, cardiovascular and respiratory diseases, reproductive problems, and other medical maladies, but one of the little known effects of smoking is that on injuries. There is considerable evidence from a variety of sources that (1) smoking increases overall injury risk, (2) the greater the amount of smoking, the higher is the injury risk, and (3) smoking is an independent injury risk factor...
2018: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/29516128/is-increased-peripheral-ligamentous-laxity-in-term-pregnant-women-associated-with-obstetric-anal-sphincter-injury
#20
Bertrand Gachon, Marion Desgranges, Laetitia Fradet, Arnaud Decatoire, Florian Poireault, Fabrice Pierre, Xavier Fritel, David Desseauve
INTRODUCTION AND HYPOTHESIS: Increased ligamentous laxity is associated with pelvic floor distension in pregnant women. This considered, it may also be related to the risk of obstetric anal sphincter injury (OASI). Our objective was to assess the association among increased ligamentous laxity, perineal tear severity, and OASI occurrence. METHODS: This is a prospective study. We assessed ligamentous laxity between the 36th week of pregnancy and the onset of labor, by measuring the passive extension of the nondominant index finger for a 0...
March 7, 2018: International Urogynecology Journal
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