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https://www.readbyqxmd.com/read/28718946/evidence-for-plical-support-of-the-patella
#1
Robert M Geraghty, Michelle Spear
There is a consensus that there is no overt anterior joint capsule in the knee. However, other anterior structures act in lieu of a joint capsule: the quadriceps tendon and patellar retinacular fibres. In the absence of a capsule, the synovium forms the suprapatellar pouch. Other synovial structures, the plicae, are more controversial. They are often described as embryonic remnants with no function, despite surrounding the patella. We aimed to identify plical anatomy and histology on cadaveric dissection and to examine their embryology using the human virtual embryo website...
July 18, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28717629/ultrasound-measures-of-tendon-thickness-intra-rater-inter-rater-and-inter-machine-reliability
#2
María Elena Del Baño-Aledo, Jacinto Javier Martínez-Payá, José Ríos-Díaz, Silvia Mejías-Suárez, Sergio Serrano-Carmona, Ana de Groot-Ferrando
BACKGROUND: Ultrasound imaging is often used by physiotherapists and other healthcare professionals but the reliability of image acquisition with different ultrasound machines is unknown. The objective was to compare the intra-rater, inter-rater and intermachine reliability of thickness measurements of the plantar fascia (PF), Achilles tendon (AT), patellar tendon (PT) and elbow common extensor tendon (ECET) with musculoskeletal ultrasound imaging (MSUS). METHODS: Tendon thickness was measured in four anatomical structures (14 participants, 28 images per tendon) by two sonographers and with two different ultrasound machines...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717625/assessment-of-different-fitting-methods-for-in-vivo-bi-component-t2-analysis-of-human-patellar-tendon-in-magnetic-resonance-imaging
#3
Fang Liu, Richard Kijowski
PURPOSE: To investigate the robustness of four fitting methods for bi-component effective spin-spin T2 (T2(*)) relaxation time analysis of human patellar tendon. METHODS: A three-dimensional (3D) cone ultra-short echo-time (UTE) sequence was performed on the knees of ten healthy volunteers at 3.0T. Four fitting methods incorporating either Gaussian or Rician noise distribution were used for voxel-by-voxel bi-component T2(*) analysis of the patellar tendon. The T2(*) for the short relaxing (T(*)*,s ) and long relaxing (T(*)2,l ) water components and the fraction of the short relaxing water component (fs ) were measured, and different fitting methods were compared using Friedman's and Wilcoxon signed rank tests...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717624/ipsilateral-hamstring-tendon-graft-reconstruction-for-chronic-patellar-tendon-ruptures-surgical-technique
#4
Nicola Maffulli, Angelo Del Buono, Francesco Oliva
BACKGROUND: Patellar tendon chronic ruptures are more debated to manage that acute injuries as the patella tends to retract proximally (after 2 weeks), and surrounding soft tissues may make the repair more complicate. PURPOSE: We propose a novel technique in which the patellar tendon is reconstructed using ipsilateral hamstring tendons. This surgical procedure implies to drill a single tunnel through the patella and another through the tibia to reduce the risk of bony breakage...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28707752/analysis-of-the-correlation-between-knee-extension-torque-and-patellar-tendon-elastic-property
#5
P Mannarino, K M M Lima, C R C Fontenelle, T T Matta, B F de Salles, R Simão, L F Oliveira
PURPOSE: Quadriceps strength and patellar tendon (PT) are directly linked and intimately related to daily activities and lower limb function. However, the correlation between knee extension torque (KT) and PT Young's modulus (E) measured directly is still unknown. METHOD: We used supersonic shearwave imaging (SSI) to evaluate the elastic property of PT in healthy young men and analysed its correlation with KT. Twenty-two healthy young males were included and both knees were examined...
July 14, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28706839/suspensory-fixation-device-for-use-with-bone-patellar-tendon-bone-grafts
#6
Philippe Colombet, Nicolas Bouguennec
Good to excellent results at long-term follow-up have been published for bone-patellar tendon-bone (BTB) graft anterior cruciate ligament reconstruction. Fixation using screws historically has been the most common choice for femoral and tibial bone blocks, but screws present several disadvantages, which include the risk of blowout (for which prevention implies having to shift the position of the tunnel anteriorly), as well as lesions of the bone blocks and tendons. This article describes a technique using Pullup BTB adjustable-loop length suspensory fixation (SBM, Lourdes, France) on the femoral and tibial sides...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28704344/effects-of-altering-trunk-position-during-landings-on-patellar-tendon-force-and-pain
#7
Rodrigo Scattone Silva, Craig R Purdam, Angela M Fearon, Wayne A Spratford, Claire Kenneally-Dabrowski, Peter Preston, Fábio V Serrão, James E Gaida
PURPOSE: To verify the immediate effects of altering sagittal plane trunk position during jump-landings on lower limb biomechanics, patellar tendon force and pain of athletes with and without patellar tendinopathy. METHODS: Twenty-one elite male athletes were categorized into 3 groups, athletes with patellar tendinopathy (TG, n=7), asymptomatic athletes with patellar tendon abnormalities (AG, n=7) and asymptomatic athletes without tendon abnormalities (CG, n=7)...
July 12, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28700362/bilateral-patellar-tendons-tears-after-a-fall-from-standing-position
#8
Atzmon Tsur, Marina Deeb, Nael Shakeer, Norman Loberant
No abstract text is available yet for this article.
July 11, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28698221/patellar-and-achilles-tendinopathies-are-predominantly-peripheral-pain-states-a-blinded-case-control-study-of-somatosensory-and-psychological-profiles
#9
Melanie L Plinsinga, Cornelis P van Wilgen, Michel S Brink, Viana Vuvan, Aoife Stephenson, Luke J Heales, Rebecca Mellor, Brooke K Coombes, Bill T Vicenzino
STUDY DESIGN: Case-control design. BACKGROUND: Tendinopathy is characterised by pain on tendon loading. In persistent cases of upper limb tendinopathy, it is frequently associated with central nervous system sensitisation, whereas less commonly linked in the case of persistent lower limb tendinopathies. OBJECTIVES: Compare somatosensory and psychological profiles of participants with persistent patellar (PT) and Achilles tendinopathies (AT) with pain-free controls...
July 11, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28696976/bilateral-patellar-tendon-tears-after-a-fall-from-standing-position-do-you-mind-systemic-diseases-and-medications
#10
Kamal Mezian, Jan Vacek, Leoš Navrátil, Levent Özçakar
No abstract text is available yet for this article.
July 8, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28690461/hospital-for-special-surgery-acl-registry-2-year-outcomes-suggest-low-revision-and-return-to-or-rates
#11
Moira McCarthy, Katherine Mallett, Matthew Abola, Sherrie Vassallo, Joseph Nguyen
BACKGROUND: Anterior cruciate ligament (ACL) injuries are among the most common knee injuries. Patient outcomes, rate of subsequent operations, and rate of subsequent ACL reconstruction following primary ACL reconstruction need to be evaluated. QUESTIONS/PURPOSES: This study was designed to answer the following questions: (1) What is the return to surgery (OR) rate following primary ACL reconstruction and (2) what is the revision ACL reconstruction rate? METHODS: Data was drawn from the Hospital for Special Surgery (HSS) ACL Registry...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28690437/the-use-of-modular-electronic-neuron-simulators-for-neural-circuit-construction-produces-learning-gains-in-an-undergraduate-anatomy-and-physiology-course
#12
Andrew Petto, Zachary Fredin, Joseph Burdo
During the spring of 2016 at the University of Wisconsin-Milwaukee, we implemented a novel educational technology designed to teach undergraduates about the nervous system while allowing them to physically construct their own neural circuits. Modular, electronic neuron simulators called NeuroBytes were used by the students in BIOSCI202 Anatomy and Physiology I, a four-credit course consisting of three hours per week each of lecture and laboratory time. 162 students participated in the laboratory sessions that covered reflexes; 83 in the experimental sections used the NeuroBytes to build a model of the patellar tendon reflex, while 79 in the control sections participated in alternate reflex curricula...
2017: Journal of Undergraduate Neuroscience Education: JUNE: a Publication of FUN, Faculty for Undergraduate Neuroscience
https://www.readbyqxmd.com/read/28680890/phase-specific-ground-reaction-force-analyses-of-bilateral-and-unilateral-jumps-in-patients-with-acl-reconstruction
#13
Christian Baumgart, Matthias W Hoppe, Jürgen Freiwald
BACKGROUND: In patients who have undergone anterior cruciate ligament (ACL) reconstruction, there is a weak correlation between subjective evaluation of knee function on questionnaires and clinical or biomechanical test results. HYPOTHESIS: Patients with lower subjective knee function will demonstrate lower ground-reaction forces (GRFs) in the operated leg and greater GRF asymmetries in both phase-specific and functional data analysis (FDA) approaches compared with patients with higher subjective knee function...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28680670/finite-element-modelling-of-mechanobiological-factors-influencing-sesamoid-tissue-morphology-in-the-patellar-tendon-of-an-ostrich
#14
Kyle P Chadwick, Sandra J Shefelbine, Andrew A Pitsillides, John R Hutchinson
The appearance and shape of sesamoid bones within a tendon or ligament wrapping around a joint are understood to be influenced by both genetic and epigenetic factors. Ostriches (Struthio camelus) possess two sesamoid patellae (kneecaps), one of which (the distal patella) is unique to their lineage, making them a good model for investigating sesamoid tissue development and evolution. Here we used finite-element modelling to test the hypothesis that specific mechanical cues in the ostrich patellar tendon favour the formation of multiple patellae...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28670285/muscle-and-tendon-adaptation-in-adolescence-elite-volleyball-athletes-compared-to-untrained-boys-and-girls
#15
Falk Mersmann, Georgios Charcharis, Sebastian Bohm, Adamantios Arampatzis
Though the plasticity of human tendons is well explored in adults, it is still unknown how superimposed mechanical loading by means of athletic training affects the properties of tendons during maturation. Due to the increased responsiveness of muscle to mechanical loading, adolescence is an important phase to investigate the effects of training on the mechanical properties of tendons. Hence, in the present study we compared vastus lateralis (VL) architecture, muscle strength of the knee extensor muscles and patellar tendon mechanical properties of male and female adolescent elite athletes to untrained boys and girls...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28664487/comparative-us-mri-evaluation-of-the-insall-salvati-index
#16
Francesco Giovagnorio, Matteo Olive, Alice Casinelli, Elena Maggini, Cristina Presicci, Celijeta Tominaj, Paolo Ricci
PURPOSE: To investigate whether the universally accepted range of normal patellar height ratio derived from MRI for the Insall-Salvati (IS) method could be similarly applied to ultrasound (US). MATERIALS AND METHODS: This study included 52 patients (age range 11-75 years) who underwent a bi-modality (US and MRI) examination, with a total of 60 knees evaluated. IS index (ratio of the patella tendon length to length of the patella) was acquired with both methods...
June 29, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28660230/long-term-outcomes-in-anterior-cruciate-ligament-reconstruction-a-systematic-review-of-patellar-tendon-versus-hamstring-autografts
#17
REVIEW
Kirsten L Poehling-Monaghan, Hytham Salem, Kirsten E Ross, Eric Secrist, Michael C Ciccotti, Fotios Tjoumakaris, Michael G Ciccotti, Kevin B Freedman
BACKGROUND: Much controversy still exists surrounding graft choice in anterior cruciate ligament (ACL) reconstruction. Over the past decade, an increase in comparative studies with longer follow-up has enhanced our understanding of current graft options and outcomes. PURPOSE: To describe the long-term comparative outcomes of ACL reconstruction with autograft bone-patellar tendon-bone (BPTB) versus autograft hamstring (HS) ACL reconstruction with regard to clinical and radiographic outcomes...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28657932/the-influence-of-external-load-on-quadriceps-muscle-and-tendon-dynamics-during-jumping
#18
Jacob E Earp, Robert U Newton, Prue Cormie, Anthony J Blazevich
Tendons possess both viscous (rate-dependent) and elastic (rate-independent) properties that determine tendon function. During high-speed movements external loading increases both the magnitude (FT) and rate (RFDT) of tendon loading. PURPOSE: The influence of external loading on muscle and tendon dynamics during maximal vertical jumping was explored. METHODS: Ten resistance-trained men performed parallel-depth, countermovement vertical jumps with and without additional load (0%, 30%, 60% and 90% of maximum squat lift strength), while joint kinetics and kinematics, quadriceps tendon length (LT) and patellar tendon FT and RFDT were estimated using integrated ultrasound, motion analysis and force platform data and muscle-tendon modelling...
June 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28654440/quadriceps-tendon-bone-or-patellar-tendon-bone-autografts-when-reconstructing-the-anterior-cruciate-ligament-a-meta-analysis
#19
Osman Riaz, Adeel Aqil, Ashim Mannan, Fahad Hossain, Mubusher Ali, Gautam Chakrabarty, Graham Radcliffe
OBJECTIVE: We aimed to quantitatively assess the outcomes of studies, comparing the use of Bone-patellar tendon-bone (BPTB) and the quadriceps tendon-bone (QTB) autografts when reconstructing the anterior cruciate ligament (ACL). DATA SOURCES: MEDLINE, Embase, and CINAHL databases were searched for relevant articles published between January 1980 and January 2015 for the purpose of identifying studies comparing BPTB and QTB autografts for ACL reconstruction. Included studies were assessed regarding their methodological quality before analysis...
June 22, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28646319/presence-of-enthesopathy-in-patients-with-primary-sjogren-s-syndrome-ultrasonographic-study-of-a-local-cohort
#20
Sinem Sag, Mustafa Serdar Sag, Ibrahim Tekeoglu, Ayhan Kamanlı, Kemal Nas
BACKGROUND: Musculoskeletal findings in Sjögren's syndrome are arthralgia, arthritis, myalgia, myositis, fibromyalgia, and chronic fatigue. Enthesis zones are important in the formation of pain in the musculoskeletal system. Musculoskeletal ultrasound (US) may show subclinical enthesitis in the synovial joints and in the axial skeleton before joint swelling in inflammatory diseases characterized by arthritis. OBJECTIVE: In this study, we aimed to determine the presence of enthesopathy using the Madrid sonographic enthesitis index (MASEI) in patients with primary Sjögren's syndrome (PSS)...
June 23, 2017: Journal of Medical Ultrasonics
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