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https://www.readbyqxmd.com/read/28434037/open-capsular-and-ligament-reconstruction-with-semitendinosus-hamstring-autograft-successfully-controls-superior-and-posterior-translation-for-type-v-acromioclavicular-joint-dislocation
#1
Raffaele Garofalo, Enrico Ceccarelli, Alessandro Castagna, Vittorio Calvisi, Brody Flanagin, Marco Conti, Sumant G Krishnan
PURPOSE: Appropriate surgical management for type V complete acromioclavicular (AC) joint dislocation remains controversial. The purpose of this paper is to retrospectively report the clinical and radiographic outcomes of an open surgical technique consisting for AC joint ligamentous and capsular reconstruction using autologous hamstring tendon grafts and semi-permanent sutures. METHODS: Between January 2005 and December 2011, 32 consecutive patients with symptomatic type V complete AC joint dislocation underwent surgical treatment using the same technique...
April 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28433348/the-influence-of-polyethylene-bearing-thickness-on-the-tibiofemoral-kinematics-of-a-bicruciate-retaining-total-knee-arthroplasty
#2
Geert Peersman, Josh Slane, Margo Dirckx, Arne Vandevyver, Philipp Dworschak, Thomas J Heyse, Lennart Scheys
BACKGROUND: The recently reintroduced bicruciate retaining Total Knee Arthroplasty (BCR TKA) is an effort to reproduce kinematics closer to the native knee. However, there is no data on appropriate balancing with this implant. Balancing is crucial and challenging as medial and lateral polyethylene (PE) inlays are modular, which allows for placement of different thicknesses in the medial and lateral compartments. This study aimed at providing a detailed kinematic view on balancing BCR TKA...
April 19, 2017: Knee
https://www.readbyqxmd.com/read/28429109/associations-of-maximal-voluntary-isometric-hip-extension-torque-with-muscle-size-of-hamstring-and-gluteus-maximus-and-intra-abdominal-pressure
#3
Kota Tayashiki, Kosuke Hirata, Kiraku Ishida, Hiroaki Kanehisa, Naokazu Miyamoto
PURPOSE: Muscle size of the hamstring and gluteus maximus (GM) as well as intra-abdominal pressure (IAP) are considered as factors affecting the torque development during hip extension. This study examined the associations of torque development during maximal voluntary isometric hip extension with IAP and muscle size of the hamstring and GM. METHODS: Anatomical cross-sectional area (ACSA) of the hamstring and thickness of GM were determined in 20 healthy young males using an ultrasonography apparatus (Experiment 1)...
April 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28425251/evaluation-of-plantar-pressure-distributions-in-patients-with-anteriorcruciate-ligament-deficiency-preoperative-and-postoperative-changes
#4
Engin Çetin, Mehmet Ali Deveci, Murat Songür, Hamza Özer, Sacit Turanli
BACKGROUND/AIM: Anterior cruciate ligament (ACL) deficiency results in several kinematic changes in the lower extremities. The aim of this study is to define the plantar pressure parameters in ACL-deficient patients and to show the effect of ACL reconstruction on dynamic plantar pressure. MATERIALS AND METHODS: Forty patients with unilateral ACL rupture and 40 healthy controls were included in this study. Dynamic plantar pressures of both groups were recorded by the EMED SF-2 system during level walking...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28423061/muscle-contributions-to-medial-tibiofemoral-compartment-contact-loading-following-acl-reconstruction-using-semitendinosus-and-gracilis-tendon-grafts
#5
Jason M Konrath, David J Saxby, Bryce A Killen, Claudio Pizzolato, Christopher J Vertullo, Rod S Barrett, David G Lloyd
BACKGROUND: The muscle-tendon properties of the semitendinosus (ST) and gracilis (GR) are substantially altered following tendon harvest for the purpose of anterior cruciate ligament reconstruction (ACLR). This study adopted a musculoskeletal modelling approach to determine how the changes to the ST and GR muscle-tendon properties alter their contribution to medial compartment contact loading within the tibiofemoral joint in post ACLR patients, and the extent to which other muscles compensate under the same external loading conditions during walking, running and sidestep cutting...
2017: PloS One
https://www.readbyqxmd.com/read/28420562/progression-of-untreated-mild-thoracic-scheuermann-s-kyphosis%C3%A2-%C3%A2-radiographic-and-functional-assessment-after-mean-follow-up-of-46%C3%A2-years
#6
Leena Ristolainen, Jyrki A Kettunen, Urho M Kujala, Ari Heinonen, Dietrich Schlenzka
BACKGROUND: There is no data available on the radiographic development of the Scheuermann's deformity. Our purpose was to investigate radiographic deformity progression and the relation between kyphosis progression and clinical outcome in patients with untreated Scheuermann's kyphosis. METHODS: Thoracic kyphosis (Th4-Th12) was measured from standing lateral radiographs in 19 patients at baseline and after mean 46-year follow-up. Mean age at baseline was 19.2 and at follow-up 64...
April 15, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28416087/the-impact-of-joint-angle-and-movement-velocity-on-sex-differences-in-the-functional-hamstring-quadriceps-ratio
#7
Mark De Ste Croix, Youssif O ElNagar, John Iga, Francisco Ayala, David James
BACKGROUND: Females are two to eight times more likely to suffer a non-contact injury compared with males thus the purpose of this study was to explore the influence of joint angle and movement velocity on sex differences in the functional hamstring to quadriceps ratio (H/QFUNC). METHODS: Isokinetic concentric and eccentric torque were determined in 110 participants (55 males and 55 females) through a 90° range of movement at 60, 120, and 240°/s. Testing was performed with the hip flexed at 10°...
April 13, 2017: Knee
https://www.readbyqxmd.com/read/28412106/radial-notch-labralization-for-proximal-radioulnar-joint-dysplasia
#8
Enrico Bellato, Shawn W O'Driscoll
BACKGROUND: Chronic posterior subluxation or dislocation of the radial head is uncommon and difficult to treat. To restore radiocapitellar alignment, procedures such as deepening of the notch using a high-speed burr have been described, but they can result in cartilage damage. We hypothesized that a radial notch labralization using soft tissue could improve radiocapitellar tracking without violating the joint surface. METHODS: A radial notch labralization was performed in 3 patients with chronic posterior subluxation of the radial head and developmental dysplasia of the radial notch in the setting of complex recurrent instability of the elbow...
April 12, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28411486/the-effect-of-age-and-knee-osteoarthritis-on-muscle-activation-patterns-and-knee-joint-biomechanics-during-dual-belt-treadmill-gait
#9
Derek Rutherford, Matthew Baker, Ivan Wong, William Stanish
PURPOSE: To compare a group of individuals with moderate medial compartment knee osteoarthritis (OA) to both an age-matched asymptomatic group of older adults and younger adults to determine whether differences in knee joint muscle activation patterns and joint biomechanics exist during gait between these three groups. SCOPE: 20 young adults, 20 older adults, and 40 individuals with moderate knee OA were recruited. Using standardized procedures, surface electromyograms were recorded from the vastus lateralis and medialis, rectus femoris and the medial and lateral hamstrings...
April 7, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28409515/effects-of-stretching-and-fatigue-on-peak-torque-muscle-imbalance-and-stability
#10
Pablo B Costa, Cassio V Ruas, Cory M Smith
BACKGROUND: The present study examined the acute effects of hamstrings stretching and fatigue on knee extension and flexion peak torque (PT), hamstrings to quadriceps (H:Q) ratio, and postural stability. METHODS: Seventeen women (mean ± SD age = 21.8 ± 2.1 yrs; body mass = 63.0 ± 10.5 kg; height = 164.7 ± 6.2 cm) and eighteen men (25.8 ± 4.6 yrs; 83.6 ± 13.2 kg; 175.3 ± 6.0 cm) took part in three laboratory visits. The first visit was a familiarization session, and the subsequent two visits were randomly assigned as a control or stretching condition...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28409139/double-bundle-pcl-reconstruction-using-autologous-hamstring-tendons-outcome-with-a-minimum-2-year-follow-up
#11
Ricardo de Paula Leite Cury, Rômulo Neves Castro Filho, Daniel Akira Sadatsune, Davi Ribeiro do Prado, Ricardo José Peruzzo Gonçalves, Marcos Barbieri Mestriner
OBJECTIVE: To present the outcomes of posterior cruciate ligament (PCL) double-bundle reconstruction using autologous hamstring tendons, with a minimum follow-up of two years. METHODS: Evaluation of 16 cases of PCL injury that underwent double-bundle reconstruction with autogenous hamstring tendons, between 2011 and 2013. The final sample consisted of 16 patients, 15 men and one woman, with a mean age of 31 years (21-49). The predominant mechanism was motorcycle accident in half of the cases...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28409108/hamstring-graft-biological-preparation-for-anterior-cruciate-ligament-reconstruction
#12
Nuno Camelo Barbosa, Francisco Guerra-Pinto, Claudia Cabeleira, Pedro Beja da Costa
The all-inside anterior cruciate ligament reconstruction (ACLR) success depends on biologic integration of the graft in the bone tunnel. Sutures wrapping the tendon in the bone tunnel may affect tendon-bone healing in shorter bone tunnels. To achieve better graft integration, we propose a variation of the graft link suture technique wherein the graft is linked chain-like to the femoral and tibial TightRope (Arthrex), which increases the tendon-bone contact area by eliminating sutures from the noose of the graft and thus may allow better graft integration...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28409105/anatomic-single-bundle-anterior-cruciate-ligament-reconstruction-using-the-modified-transtibial-technique
#13
Dhong Won Lee, Jin Goo Kim
We present a technique for anterior cruciate ligament (ACL) reconstruction using hamstring tendon autograft with a modified transtibial technique. Our modified transtibial technique has the advantages of the conventional transtibial technique that is familiar to surgeons and that allows the press-fit fixing and enables us to make a relatively long femoral tunnel. To make the femoral tunnel at the anatomic position, the triangular, funnel-shaped bony trough was made to slip the eccentrically positioned guide pin into the anticipated anatomic center with a free-hand technique after marking the anatomic ACL footprint using a microfracture awl through the anteromedial portal...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28409103/posterior-cruciate-ligament-reconstruction-with-hamstring-tendons-using-a-suspensory-device-for-tibial-fixation-and-interference-screw-for-femoral-fixation
#14
Alejandro Espejo-Baena, Alejandro Espejo-Reina, María Josefa Espejo-Reina, Maximiano Lombardo-Torre
A technique for posterior cruciate ligament reconstruction is presented. Autologous hamstring tendons are selected as a graft. An interference screw is used for femoral fixation. A suspension device is used for tibial fixation to bring the fixation closer to the articular end of the tibial tunnel. Single diameter tunnels of the same diameter as the graft are created in an outside-in direction.
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28404457/nerve-injury-during-anterior-cruciate-ligament-reconstruction-a-comparison-between-patellar-and-hamstring-tendon-grafts-harvest
#15
Barak Haviv, Shlomo Bronak, Ehud Rath, Mustafa Yassin
BACKGROUND: Tendon harvesting for anterior cruciate ligament reconstruction often injures sensory branches of the saphenous nerve. The reports on the prevalence of these injuries are scarce, while the implications on patient satisfaction are not known. Our objective was to compare the prevalence of sensory nerve injuries in patellar to hamstring autograft harvesting for anterior cruciate ligament reconstructions and follow up their postoperative course. METHODS: Between 2012 and 2014, patients who had a primary anterior cruciate ligament reconstruction with bone patellar tendon bone or hamstring autografts were included (n=94)...
April 9, 2017: Knee
https://www.readbyqxmd.com/read/28401277/stress-distribution-is-deviated-around-the-aperture-of-the-femoral-tunnel-in-the-anatomic-anterior-cruciate-ligament-reconstruction
#16
Yuichi Hoshino, Ryosuke Kuroda, Yuichiro Nishizawa, Naoki Nakano, Kanto Nagai, Daisuke Araki, Shinya Oka, Shogo Kawaguchi, Kouki Nagamune, Masahiro Kurosaka
PURPOSE: Final tunnel location in the anterior cruciate ligament (ACL) reconstruction is unpredictable due to tunnel widening and/or transposition. The mechanical stress around the tunnel aperture seems to be a major factor but is not fully investigated. The purpose of this study was to measure the stress from the ACL graft around the tunnel aperture when the ACL graft tension reaches its peak. METHODS: Six cadaveric knees were used. Single-bundle ACL reconstruction was performed using a hamstrings graft...
April 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28401027/beneficial-effects-of-childhood-selective-dorsal-rhizotomy-in-adulthood
#17
T S Park, Caleb Edwards, Jenny L Liu, Deanna M Walter, Matthew B Dobbs
 Selective dorsal rhizotomy (SDR) has been used to treat children with spastic cerebral palsy (CP) for over three decades. However, little is known about the outcomes of childhood SDR in adults.  Objectives: 1) To study the effects of childhood SDR on the quality of life and ambulatory function in adult life. 2) To determine late side effects of SDR in adults.   Methods: Adults (> 17.9 years) who underwent SDR in childhood (2 - 17.9 years) between 1987 and 2013 were surveyed in 2015. Patients completed a survey, including questions on demographic information, quality of life, health, surgical outcomes, motor function, manual ability, pain, braces/orthotics, post-SDR treatment, living situation, education level, work status, and side effects of SDR...
March 5, 2017: Curēus
https://www.readbyqxmd.com/read/28400662/early-anterior-cruciate-ligament-reconstruction-can-save-meniscus-without-any-complications
#18
Chang-Ik Hur, Eun-Kyoo Song, Sung-Kyu Kim, Seung-Hun Lee, Jong-Keun Seon
BACKGROUND: Early ACL reconstruction, before retuning to activity eliminates recurrent episodes of instability and thereby decreases chances of meniscal and cartilage injury. However, there are no clear and uniform guidelines regarding the timing of ACL reconstruction or clarity in the definition of early and delayed reconstruction to reduce the complications after reconstruction in the ACL injured knee. The purpose of this study was to compare the clinical outcome, stability, muscle power, and postural control after early and delayed anterior cruciate ligament (ACL) reconstruction...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28400424/increased-taxon-sampling-reveals-thousands-of-hidden-orthologs-in-flatworms
#19
Jose M Martin-Duran, Joseph F Ryan, Bruno Vellutini, Kevin Pang, Andreas Hejnol
Gains and losses shape the gene complement of animal lineages and are a fundamental aspect of genomic evolution. Acquiring a comprehensive view of the evolution of gene repertoires is limited by the intrinsic limitations of common sequence similarity searches and available databases. Thus, a subset of the gene complement of an organism consists of hidden orthologs, i.e., those with no apparent homology to sequenced animal lineages - mistakenly considered new genes - but actually representing rapidly evolving orthologs or undetected paralogs...
April 11, 2017: Genome Research
https://www.readbyqxmd.com/read/28399324/comparison-of-anteromedial-and-transtibial-acl-reconstruction-using-expandable-fixation
#20
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
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