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https://www.readbyqxmd.com/read/28437129/acute-ankle-sprain-in-a-mouse-model-changes-in-knee-joint-space
#1
Tricia Hubbard-Turner, Erik A Wikstrom, Sophie Guderian, Michael J Turner
CONTEXT:   Ankle sprains remain the most common orthopaedic injury. Conducting long-term studies in humans is difficult and costly, so the long-term consequences of an ankle sprain are not entirely known. OBJECTIVE:   To measure knee-joint space after a single surgically induced ankle sprain in mice. DESIGN:   Randomized controlled trial. SETTING:   University research laboratory. PATIENTS OR OTHER PARTICIPANTS:   Thirty male mice (CBA/2J) were randomly placed into 1 of 3 surgical groups: the transected calcaneofibular ligament (CFL) group, the transected anterior talofibular ligament/CFL group, and a sham treatment group...
April 24, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28433391/mechanisms-of-anterior-posterior-stability-of-the-knee-joint-under-load-bearing
#2
Ryan J Reynolds, Peter S Walker, John Buza
The anterior-posterior (AP) stability of the knee is an important aspect of functional performance. Studies have shown that the stability increases when compressive loads are applied, as indicated by reduced laxity, but the mechanism has not been fully explained. A test rig was designed which applied combinations of AP shear and compressive forces, and measured the AP displacements relative to the neutral position. Five knees were evaluated at compressive loads of 0, 250, 500, and 750N, with the knee at 15° flexion...
April 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28431150/the-natural-history-of-children-with-joint-hypermobility-syndrome-and-ehlers-danlos-hypermobility-type-a-longitudinal-cohort-study
#3
Mark C Scheper, Lesley L Nicholson, Roger D Adams, Louise Tofts, Verity Pacey
Objectives.: The objective of the manuscript was to describe the natural history of complaints and disability in children diagnosed with joint hypermobility syndrome (JHS)/Ehlers-Danlos-hypermobility type (EDS-HT) and to identify the constructs that underlie functional decline. Methods.: One hundred and one JHS/EDS-HT children were observed over 3 years and assessed at three time points on the following: functional impairments, quality of life, connective tissue laxity, muscle function, postural control and musculoskeletal and multi-systemic complaints...
April 18, 2017: Rheumatology
https://www.readbyqxmd.com/read/28428910/role-of-the-interosseous-membrane-in-preventing-distal-radioulnar-gapping
#4
Frederick W Werner, Matthew R LeVasseur, Brian J Harley, Ashley Anderson
Background Damage to the interosseous membrane (IOM) can alter load transmission between the radius and ulna and decrease their axial stability. Less is known about the effect of IOM sectioning on the transverse stability between the radius and ulna. Purpose The purpose of this study was to quantify the radioulnar gapping at the distal radioulnar joint (DRUJ) during forearm rotation when the IOM was experimentally sectioned while maintaining the integrity of the distal radioulnar ligaments. Methods In 12 fresh-frozen cadaver forearms tested in a combined wrist-forearm simulator, the increase in gap between the radius and ulna, at the level of the DRUJ, was determined during cyclic forearm rotation following IOM sectioning...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28402759/medial-posterior-capsular-plication-reduces-anterior-shoulder-instability-similar-to-remplissage-without-restricting-motion-in-the-setting-of-an-engaging-hill-sachs-defect
#5
Brian C Werner, Xiang Chen, Christopher L Camp, Andreas Kontaxis, Joshua S Dines, Lawrence V Gulotta
BACKGROUND: Numerous surgical options for the management of engaging Hill-Sachs lesions exist, of which remplissage has emerged as one of the most popular arthroscopic techniques. Remplissage is not without disadvantages, however, and has been demonstrated to potentially result in a loss of external rotation (ER) due to nonanatomic tethering of the infraspinatus tendon and a potential decrease in infraspinatus strength clinically. PURPOSE: The efficacy of posterior medial capsular plication in addition to Bankart repair was examined as an arthroscopic management strategy for an engaging Hill-Sachs defect...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28399324/comparison-of-anteromedial-and-transtibial-acl-reconstruction-using-expandable-fixation
#6
Omer Ozel, Bulent Yucel, Osman Orman, Emre Demircay, Serhat Mutlu
The influence of anatomical or nonanatomical femoral tunnel position on tunnel widening and clinical outcomes in patients undergoing anterior cruciate ligament (ACL) reconstruction is not fully understood. This retrospective study examined the influence of tunnel width and placement on anterior knee stability and clinical outcomes after ACL reconstruction using the AperFix System (Cayenne Medical Inc, Scottsdale, Arizona), a direct expandable fixation technique with autologous hamstring grafts. The records of 80 patients (79 men and 1 woman) who underwent ACL reconstruction were evaluated...
April 11, 2017: Orthopedics
https://www.readbyqxmd.com/read/28373955/arthroscopic-shoelace-capsular-closure-technique-in-the-hip-using-ultratape
#7
Soshi Uchida, Cecilia Pascual-Garrido, Yasuo Ohnishi, Hajime Utsunomiya, Yohei Yukizawa, Jorge Chahla, Akinori Sakai
Hip arthroscopy is promising tool for assessing and treating intra-articular pathologies including labral tears, cartilage injuries, and ligamentum teres tears of the hip. Interportal capsulotomy allows for better visualization and accessibility of the arthroscope and working instruments. The hip capsule has been defined as a crucial stabilizer of the hip joint. Thus, capsular closure is recognized as an important procedure to prevent postoperative instability after hip arthroscopic surgery. Despite the routine capsular closure during hip arthroscopy, there is a small subset of patients who complain of hip pain and dysfunction after surgery most likely because of disruption of hip closure site after routine complete capsular closure with strong suture for treating hip instability...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28366437/mechanical-histological-and-functional-properties-remain-inferior-in-conservatively-treated-achilles-tendons-in-rodents-long-term-evaluation
#8
Benjamin R Freedman, George W Fryhofer, Nabeel S Salka, Harina A Raja, Cody D Hillin, Courtney A Nuss, Daniel C Farber, Louis J Soslowsky
Conservative treatment (non-operative) of Achilles tendon ruptures is suggested to produce equivalent capacity for return to function; however, long term results and the role of return to activity (RTA) for this treatment paradigm remain unclear. Therefore, the objective of this study was to evaluate the long term response of conservatively treated Achilles tendons in rodents with varied RTA. Sprague Dawley rats (n=32) received unilateral blunt transection of the Achilles tendon followed by randomization into groups that returned to activity after 1-week (RTA1) or 3-weeks (RTA3) of limb casting in plantarflexion, before being euthanized at 16-weeks post-injury...
May 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28359694/long-term-clinical-results-in-patients-treated-for-recurrent-posterolateral-elbow-joint-instability-using-an-ipsilateral-triceps-tendon-graft
#9
Christian Kastenskov, Jeppe Vejlgaard Rasmussen, Janne Ovesen, Bo Sanderhoff Olsen
BACKGROUND: The aim was to report the long-term functional and radiologic outcomes in patients treated for recurrent posterolateral elbow joint instability using an ipsilateral triceps tendon graft. METHODS: We included 18 patients previously treated for posterolateral elbow joint instability and evaluated for clinical results in 2003. Fifteen patients were examined with a mean follow-up period of 19 years (range, 17-22 years). We performed the clinical follow-up with clinical examination of stability, range of motion, pain score on a visual analog scale, Mayo Elbow Performance Score, and Danish version of Oxford Elbow Score...
March 27, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28356631/associations-of-knee-muscle-force-bone-malalignment-and-knee-joint-laxity-with-osteoarthritis-in-elderly-people
#10
Kazumasa Nakagawa, Misako Maeda
[Purpose] From the viewpoint of prevention of knee osteoarthritis, the aim of this study was to verify how muscle strength and joint laxity are related to knee osteoarthritis. [Subjects and Methods] The study subjects consisted of 90 community-dwelling elderly people aged more than 60 years (22 males, 68 females). Femorotibial angle alignment, knee joint laxity, knee extensors and flexor muscle strengths were measured in all subjects. In addition, the subjects were divided into four groups based on the presence of laxity and knee joint deformation, and the muscle strength values were compared...
March 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28355681/a-biomechanical-study-of-two-distinct-methods-of-anterior-cruciate-ligament-rupture-and-a-novel-surgical-reconstruction-technique-in-a-small-animal-model-of-posttraumatic-osteoarthritis
#11
Austin J Ramme, Matin S Lendhey, Eric J Strauss, Oran D Kennedy
Small animal models are critical for studies of sports-related knee injury and disease such as posttraumatic osteoarthritis (PTOA) following anterior cruciate ligament (ACL) rupture. In such models, ACL damage can be achieved by surgical transection or, using a more recent innovation, by noninvasive biomechanical means. Whether these approaches differentially alter normal mechanics is unknown. Furthermore, while surgical reconstruction of ruptured ACL can greatly improve joint stability, its effect on PTOA development is also unclear...
March 29, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28349915/use-of-mini-anchors-and-rehabilitation-with-0%C3%A2-cusp-angle-teeth-complete-denture-in-recurrent-condylar-dislocation-technical-adequacy-and-procedure
#12
Rafaella de S Leão, Edmilson Z da S Júnior, Marília Gm de Alencar, Raisa Q Catunda, Sandra Ld de Moraes, Belmiro C do E Vasconcelos
AIM: To report a case of association between the surgical treatment of temporomandibular dysfunction and rehabilitation with denture total prosthesis (TP) using nonanatomic teeth (cusp 0°) in patients with anterior recurrent dislocation of the temporo-mandibular joint (TMJ) and persistent uncontrolled mandibular movement, showing a technical adaptation and conduct. INTRODUCTION: There are several treatment approaches available for dislocation of the TMJ. The use of condylar mini-anchors for recurrent TMJ dislocation is a valid option and should be considered since it does not alter the joint anatomy...
April 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28346368/pathophysiological-significance-of-dermatan-sulfate-proteoglycans-revealed-by-human-genetic-disorders
#13
REVIEW
Shuji Mizumoto, Tomoki Kosho, Shuhei Yamada, Kazuyuki Sugahara
The indispensable roles of dermatan sulfate-proteoglycans (DS-PGs) have been demonstrated in various biological events including construction of the extracellular matrix and cell signaling through interactions with collagen and transforming growth factor-β, respectively. Defects in the core proteins of DS-PGs such as decorin and biglycan cause congenital stromal dystrophy of the cornea, spondyloepimetaphyseal dysplasia, and Meester-Loeys syndrome. Furthermore, mutations in human genes encoding the glycosyltransferases, epimerases, and sulfotransferases responsible for the biosynthesis of DS chains cause connective tissue disorders including Ehlers-Danlos syndrome and spondyloepimetaphyseal dysplasia with joint laxity characterized by skin hyperextensibility, joint hypermobility, and tissue fragility, and by severe skeletal disorders such as kyphoscoliosis, short trunk, dislocation, and joint laxity...
March 27, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28343616/has-the-median-nerve-involvement-in-rheumatoid-arthritis-been-overemphasized
#14
Rajalingham Sakthiswary, Rajesh Singh
Rheumatoid arthritis (RA) is a well and widely recognized cause of carpal tunnel syndrome (CTS). In the rheumatoid wrist, synovial expansion, joint erosions and ligamentous laxity result in compression of the median nerve due to increased intracarpal pressure. We evaluated the published studies to determine the prevalence of CTS and the characteristics of the median nerve in RA and its association with clinical parameters such as disease activity, disease duration and seropositivity. A total of 13 studies met the eligibility criteria...
March 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28321423/the-anterolateral-ligament-an-anatomic-study-on-sex-based-differences
#15
Matt Daggett, Camilo Helito, Matthew Cullen, Andrew Ockuly, Kyle Busch, Joseph Granite, Barth Wright, Bertrand Sonnery-Cottet
BACKGROUND: The anterolateral ligament (ALL) has been shown to have an important role in rotatory stability of the knee. While there is abundant research on sex-based differences related to anterior cruciate ligament (ACL) rupture, there is a paucity of literature related to such differences in the ALL. PURPOSE: To define any sex-based differences in the ALL with regard to length, width, and thickness. STUDY DESIGN: Descriptive laboratory study...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28314694/stress-ultrasound-in-baseball-players-with-ulnar-collateral-ligament-injuries-additional-value-for-predicting-rehabilitation-outcome
#16
Na Ra Kim, Sung Gyu Moon, Jin-Young Park, Jin Woo Choi, Kyung-Soo Oh
BACKGROUND: The purpose of this study was to evaluate the additional value of stress ultrasound (US) for predicting rehabilitation outcome in baseball players with ulnar collateral ligament (UCL) injury. METHODS: Stress US and magnetic resonance imaging (MRI) in 41 baseball players with UCL injury who received rehabilitation treatment for more than 6 weeks were retrospectively compared between the rehabilitation group (n = 23) and surgery group (n = 18)...
March 14, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28299388/the-combination-of-tibial-anterior-translation-and-axial-rotation-into-a-single-biomechanical-factor-improves-the-prediction-of-patient-satisfaction-over-each-factor-alone-in-patients-with-acl-reconstructed-knees
#17
Thomas P Branch, Shaun K Stinton, William C Hutton, Philippe Neyret
PURPOSE: The purpose of this study was to identify biomechanical factors, in both reconstructed and healthy knees, that correlate with patient satisfaction after ACL reconstruction. METHODS: Seventeen patients who had undergone unilateral ACL reconstruction were reviewed 9 years post-op. Patients completed subjective questionnaires and underwent manual knee laxity testing (Lachman-Trillat, KT-1000, and pivot shift) and automated laxity testing. During automated testing, both legs were rotated into external rotation and then internal rotation until peak rotational torque reached 5...
March 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28280906/kinematics-of-acl-and-anterolateral-ligament-part%C3%A2-ii-anterolateral-and-anterior-cruciate-ligament-reconstruction
#18
T Bonanzinga, C Signorelli, A Grassi, N Lopomo, M Jain, M Mosca, F Iacono, M Marcacci, S Zaffagnini
PURPOSE: To quantify the influence of Single-Bundle with Lateral Plasty and Double-Bundle reconstruction on static and dynamic laxity in combined ACL- and ALL-deficient knees. METHODS: The study included 10 fresh-frozen human knees. The joints were analyzed in the following conditions: ACL + ALL resection, Single-Bundle with Lateral Plasty (SBLP) reconstruction, Double-Bundle (DB) reconstruction. Testing parameters were: anterior displacement at 30° and 90° of flexion (AP30, AP90) applying a manual maximum load; internal rotation at 30° and 90° of flexion (INT30, INT90) applying a 5 Nm torque and acceleration and internal rotation Pivot-Shift (PS) test...
March 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28271938/musculoskeletal-effects-of-pregnancy-on-the-lower-extremitya-literature-review
#19
Derek S Anselmo, Ebony Love, Dana N Tango, Lesly Robinson
Pregnant women are often burdened with musculoskeletal symptoms of the lower extremity due to the physical, hormonal, and anatomical changes that occur throughout pregnancy. These symptoms are associated with musculoskeletal dysfunctions, modified gait, joint laxity, muscle imbalance, and increased body mass. This article reviews the literature involving the lower-extremity changes experienced by women during pregnancy and their respective pathophysiologic causes.
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28271089/total-knee-arthroplasty-in-severe-unstable-knee-case-report-and-literature-review
#20
Mohammad Naghi Tahmasebi, Gholamreza Ghorbani Amjad, Mohammad Hassan Kaseb, Kaveh Bashti
Multiplanar or global laxity in arthritic knee is rare, most of this patients have neuromuscular disorder (post poliomyelitis, spinal dystrophy) or history of knee trauma. Ligament insufficiency and severe bone loss is significant in this patient. The estimated prevalence for the concurrence of charcot marie-tooth (CMT) with myasthenia gravis (MG) suggests an extremely rare event. We have presented a 54-year-old female patient with CMT and MG complaining of progressive pain, swelling, and crepitation of the knee joints who had been undergone total knee arthroplasty (TKA) with rotating hinge prosthesis...
January 2017: Archives of Bone and Joint Surgery
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