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anterior tibial tendon

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https://www.readbyqxmd.com/read/28089795/comparison-of-postoperative-biomechanical-function-between-anatomic-double-bundle-and-single-bundle-acl-reconstructions-using-calcium-phosphate-hybridized-tendon-grafts-in-goats
#1
Hirotaka Mutsuzaki, Hiromichi Fujie, Hiromi Nakajima, Makoto Fukagawa, Shunsuke Nomura, Masataka Sakane
BACKGROUND: Calcium phosphate (CaP)-hybridized tendon grafts improved biomechanical function compared with untreated grafts after single-bundle (SB) anterior cruciate ligament (ACL) reconstruction.The purpose of this study was to compare the biomechanical functionbetweenanatomic double-bundle (DB)and single-bundle (SB)ACL reconstructions using CaP-hybridized tendon grafts at 6 months postoperativelyin goats. HYPOTHESIS: We hypothesized that the postoperativebiomechanicalfunctioninthe DBgroupwill bebetterthan that inthe SB group...
January 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28076887/in-vivo-bone-tunnel-evaluation-of-nanoparticle-grafts-using-an-acl-reconstruction-rabbit-model
#2
S A Grant, S E Smith, H Schmidt, F Pfeiffer, K Kuroki, S Sherman, R A White, D A Grant
Acellular human gracilis tendons conjugated with gold nanoparticles (AuNP) and hydroxyapatite nanoparticles (nano-HAp) were used as a graft in an anterior cruciate ligament (ACL) reconstruction rabbit model. The ACLs of 11 New Zealand rabbits were reconstructed using grafts conjugated without nanoparticles, with AuNP only, and with both AuNP and nano-HAp. Semi-quantitative histological scoring of bone tunnel portion of grafts was performed after 14 weeks. Bone tunnels were scored for graft degeneration, graft remodeling, percentage of new host fibrous connective, collateral connection, head-to-head connection, graft collagen fiber organization, new host fibrous connective tissue organization, and graft and interface vascularity...
January 11, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28056513/is-an-anterolateral-ligament-reconstruction-required-in-acl-reconstructed-knees-with-associated-injury-to-the-anterolateral-structures
#3
Frank R Noyes, Lauren E Huser, Darin Jurgensmeier, James Walsh, Martin S Levy
BACKGROUND: The effect of an anterolateral ligament (ALL) reconstruction on rotational knee stability and corresponding anterior cruciate ligament (ACL) graft forces using multiple knee loading conditions including the pivot-shift phenomenon has not been determined. PURPOSE: First, to determine the rotational stability and ACL graft forces provided by an anatomic bone-patellar tendon-bone ACL reconstruction in the ACL-deficient knee alone and with an associated ALL/iliotibial band (ITB) injury...
January 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28056178/is-there-any-benefit-in-anterior-cruciate-ligament-reconstruction-in-patients-older-than-60-years
#4
Cécile Toanen, Guillaume Demey, Panagiotis G Ntagiopoulos, Paolo Ferrua, David Dejour
BACKGROUND: Results of anterior cruciate ligament (ACL) reconstruction are traditionally excellent in younger and nonarthritic patients. During the past few decades, people older than 60 years have become more active than ever, with more demanding physical lifestyles. An increase also has been noted in active patients with diagnosed ACL injuries. More patients are requesting treatment for ACL deficiency in hopes of returning to preinjury levels of activity. PURPOSE: The aims of this study were to evaluate the results of ACL reconstruction in patients older than 60 years in terms of functional recovery, return to sports, and postoperative incidence of osteoarthritis and to compare their results with published results of different age groups...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28054146/revision-anterior-cruciate-ligament-reconstruction-with-ipsi-or-contralateral-hamstring-tendon-grafts
#5
Claudio Legnani, Giuseppe Peretti, Enrico Borgo, Stefania Zini, Alberto Ventura
OBJECTIVES: With the increasing number of primary anterior cruciate ligament (ACL) reconstructions, the need for revision ACL surgery has risen over the past few years. The purpose of the present study is to retrospectively compare the clinical outcome of ipsilateral versus contralateral hamstring tendon autografts for ACL revision surgery, specifically with regard to patient satisfaction, post-operative functional outcomes, and return to sports. METHODS: Between 2004 and 2011, 64 patients underwent ACL revision surgery...
January 4, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28050536/functional-and-clinical-results-achieved-in-congenital-clubfoot-patients-treated-by-ponseti-s-technique
#6
Pedro Augusto Jaqueto, Guilherme Salgado Martins, Fernando Saddi Mennucci, Cintia Kelly Bittar, José Luís Amim Zabeu
OBJECTIVES: To analyze and evaluate functional and clinical results in patients with congenital clubfoot treated with Ponseti's technique. METHODS: This study evaluated 31 patients diagnosed with 51 congenital clubfeet, treated between April 2006 and September 2011 with Ponseti's technique. The patients who did not achieve an equinus correction with manipulation were treated with Achilles tenotomy. An anterior tibial tendon transfer was performed in patients who maintained residual adduction...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28050456/femoral-and-tibial-tunnel-widening-following-anterior-cruciate-ligament-reconstruction-using-various-modalities-of-fixation-a-prospective-observational-study
#7
Dileep Krishnamoorthy Srinivas, Mahesha Kanthila, Rama Prakasha Saya, Jvs Vidyasagar
INTRODUCTION: Bone tunnel enlargement after Anterior Cruciate Ligament Reconstruction (ACL-R) is a well-accepted phenomenon but there are very few published data comparing the extent of tunnel widening by various methods of fixation after ACL-R. AIM: To compare the femoral and tibial tunnel widening following ACL-R with different methods of fixation using CT scan. MATERIALS AND METHODS: This one year prospective study included all patients with chronic Anterior Cruciate Ligament (ACL) injury who underwent primary arthroscopic ACL-R using tripled hamstring tendon autograft...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28043751/bone-incorporation-of-silicate-substituted-calcium-phosphate-in-2-stage-revision-anterior-cruciate-ligament-reconstruction-a-histologic-and-radiographic-study
#8
Jan von Recum, Johannes Schwaab, Thorsten Guehring, Paul-Alfred Grützner, Marc Schnetzke
PURPOSE: To evaluate the histologic and radiographic outcomes of using silicate-substituted calcium phosphate (Si-CaP) as bone graft substitute for the augmentation of tunnel defects in 2-stage revision anterior cruciate ligament (ACL) reconstruction. METHODS: Forty patients undergoing 2-stage revision ACL reconstruction were included in a prospective, randomized controlled clinical trial between 2012 and 2015. The inclusion criteria were tunnel diameter of the tibial and/or femoral tunnel of 10 mm or greater after failed ACL reconstruction...
December 30, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28006992/increasing-hip-and-knee-flexion-during-a-drop-jump-task-reduces-tibiofemoral-shear-and-compressive-forces-implications-for-acl-injury-prevention-training
#9
Liang-Ching Tsai, Yi-An Ko, Kyle E Hammond, John W Xerogeanes, Gordon L Warren, Christopher M Powers
Although most ACL injury prevention programmes encourage greater hip and knee flexion during landing, it remains unknown how this technique influences tibiofemoral joint forces. We examined whether a landing strategy utilising greater hip and knee flexion decreases tibiofemoral anterior shear and compression. Twelve healthy women (25.9 ± 3.5 years) performed a drop-jump task before and after a training session (10-15 min) that emphasised greater hip and knee flexion. Peak tibiofemoral anterior shear and compressive forces were calculated using an electromyography (EMG)-driven knee model that incorporated joint kinematics, EMG and participant-specific muscle volumes and patella tendon orientation measured using magnetic resonance imaging (MRI)...
December 23, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28005102/tibial-tubercle-fracture-after-bone-patellar-tendon-bone-autograft
#10
Matthew J Brown, Leslie J Bisson, Mark J Anders
Fractures occurring with anterior cruciate ligament (ACL) reconstruction are rare and those that do occur take place on the patellar side of a bone-patellar tendon-bone (BPTB) autograft. Here we discuss a far more infrequent occurrence, fracture of the tibial tubercle aspect of the BPTB autograft. This fracture type occurs even more infrequently than tibial plateau fractures after ACL reconstruction based on the published literature. In this article we discuss the third published episode of a tibial tubercle fracture after BPTB allograft...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27984690/-pretibial-pseudocyst-after-anterior-cruciate-ligament-reconstruction-with-a-biocomposite-screw
#11
B Alonso, F B Sobrón, C Vidal, J Vaquero
We report the case of a patient who presented a pretibial extra-articular cyst two years after an arthroscopically assisted ACL reconstruction using an autologous bone-patellar tendon-bone graft. The tibial fixation was achieved with a bioabsorbable screw made of poly-L, D-lactic and -tricalcium phosphate (-TCP). A subcutaneous pseudocystic lesion was excised. It consisted of a capsular fibrous tissue with minimal milky fluid (1 ml) centrally. It penetrated into the tibial tunnel but did not communicate with the knee joint space...
May 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27939069/reverse-anterior-cruciate-ligament-reconstruction-fixation-a-biomechanical-comparison-study-of-tibial-cross-pin-and-femoral-interference-screw-fixation
#12
Richard J Lawley, Samuel E Klein, Steven C Chudik
PURPOSE: To evaluate the biomechanical performance of tibial cross-pin (TCP) fixation relative to femoral cross-pin (FCP), femoral interference screw (FIS), and tibial interference screw (TIS) fixation. METHODS: We randomized 40 porcine specimens (20 tibias and 20 femurs) to TIS fixation (group 1, n = 10), FIS fixation (group 2, n = 10), TCP fixation (group 3, n = 10), or FCP fixation (group 4, n = 10) and performed biomechanical testing to compare ultimate load, stiffness, yield load, cyclic displacement, and load at 5-mm displacement...
December 8, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27909676/anatomic-double-bundle-anterior-cruciate-ligament-reconstruction-with-a-free-quadriceps-tendon-autograft
#13
Sergiu Caterev, Dan Viorel Nistor, Adrian Todor
Anatomic double-bundle anterior cruciate ligament (ACL) reconstruction aims to restore the 2 functional bundles of the ACL in an attempt to better reproduce the native biomechanics of the injured knee and promote long-term knee health. However, this concept is not fully accepted and is not performed on a standard basis. In addition, the superiority of this technique over the conventional single-bundle technique has been questioned, especially the long-term clinical results. One of the down sides of the double-bundle reconstruction is the complexity of the procedure, with increased risks, operative time, and costs compared with the single-bundle procedure...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909671/endoscopic-resection-of-the-tibialis-anterior-tendon-bursa
#14
Tun Hing Lui
The tibialis anterior tendon bursa is located between the tibialis anterior tendon and the medial cuneiform bone and close to the tendon insertion. Bursitis can occur as a result of excessive local friction, infection, arthritides, or direct trauma. Endoscopic resection of the bursa is indicated in case of symptomatic bursitis that is not responding to conservative treatment or infection is suspected. It is contraindicated if there is skin infection at the portal sites. The purpose of this technical note is to describe a minimally invasive approach of endoscopic resection of the tibialis anterior tendon bursa through anterior tibial tendoscopy...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27882612/relationship-between-geometry-of-the-extensor-mechanism-of-the-knee-and-risk-of-anterior-cruciate-ligament-injury
#15
Josh C Carter, Daniel R Sturnick, Pamela M Vacek, Michael J DeSarno, Erin C Argentieri, James R Slauterbeck, Robert J Johnson, Bruce D Beynnon
The complex inter-segmental forces that are developed across an extended knee by body weight and contraction of the quadriceps muscle group transmits an anteriorly directed force on the tibia that strain the anterior cruciate ligament (ACL). We hypothesized that a relationship exists between geometry of the knees extensor mechanism and the risk of sustaining a non-contact ACL injury. Geometry of the extensor mechanism was characterized using MRI scans of the knees of 88 subjects that suffered their first non-contact ACL injury and 88 matched control subjects with normal knees that were on the same team...
November 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27858117/the-effect-of-anterior-cruciate-ligament-graft-rotation-on-knee-biomechanics
#16
Levent Surer, Konstantinos Michail, Murat Koken, Can Yapici, Junjun Zhu, Brandon D Marshall, Monica A Linde, Patrick Smolinski, Freddie H Fu
PURPOSE: The purpose of this study was to evaluate the effects on knee biomechanics of rotating the distal end of the bone-patellar tendon graft 90° in anatomic single-bundle (SB) anterior cruciate ligament (ACL) reconstruction with a porcine model. METHODS: Twenty (n = 20) porcine knees were evaluated using a robotic testing system. Two groups and three knee states were compared: (1) intact ACL, (2) deficient ACL and (3) anatomic SB ACL reconstruction with (a) non-rotated graft or (b) rotated graft (anatomic external fibre rotation)...
November 17, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27845481/unilateral-variation-in-extensor-digitorum-longus-muscle
#17
A Banerje, S Singh, K Raza, N Rani, S Kaler
During a routine dissection of an adult embalmed male cadaver for educational purpose in the department of anatomy at AIIMS, New Delhi, India, a rare unilateral variation of extensor digitorum longus (EDL) was found which is a muscle of anterior compartment of the leg. There was a split tendon of EDL muscle in the anterior compartment of left leg which became a common tendon in front of the ankle joint. This common tendon of EDL muscle again divided into four slips and were inserted in to the lateral four toes...
September 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/27806877/does-the-tibial-remnant-of-the-anterior-cruciate-ligament-promote-ligamentization
#18
Byung Ill Lee, Byoung Min Kim, Duk Hwan Kho, Sai Won Kwon, Hyeung June Kim, Hyun Ryong Hwang
BACKGROUND: The purpose of this study was to clarify the difference in ligamentization between the remnant-preserving (RP) and remnant-sacrificing (RS) techniques in anterior cruciate ligament (ACL) reconstruction using magnetic resonance imaging (MRI). METHODS: A retrospective comparative study was carried out on 98 patients undergoing ACL reconstruction using either an RP (n=56) or RS (n=42) technique. MRI was performed at one of four time points postoperatively, and the signal intensity of the ACL graft was analyzed using the signal to noise quotient (SNQ) ratio and inter-bundle high signal intensity, along with an analysis of the survival rate of remnant tissue...
December 2016: Knee
https://www.readbyqxmd.com/read/27798791/anterolateral-ligament-of-the-knee-shows-variable-anatomy-in-pediatric-specimens
#19
Kevin G Shea, Matthew D Milewski, Peter C Cannamela, Theodore J Ganley, Peter D Fabricant, Elizabeth B Terhune, Alexandra C Styhl, Allen F Anderson, John D Polousky
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction failure rates are highest in youth athletes. The role of the anterolateral ligament in rotational knee stability is of increasing interest, and several centers are exploring combined ACL and anterolateral ligament reconstruction for these young patients. Literature on the anterolateral ligament of the knee is sparse in regard to the pediatric population. A single study on specimens younger than age 5 years demonstrated the presence of the anterolateral ligament in only one of eight specimens; therefore, much about the prevalence and anatomy of the anterolateral ligament in pediatric specimens remains unknown...
October 31, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27780652/morphology-of-the-insertions-of-the-superficial-medial-collateral-ligament-and-posterior-oblique-ligament-using-3-dimensional-computed-tomography-a-cadaveric-study
#20
Takaaki Saigo, Goro Tajima, Shuhei Kikuchi, Jun Yan, Moritaka Maruyama, Atsushi Sugawara, Minoru Doita
PURPOSE: To describe the insertions of the superficial medial collateral ligament (sMCL) and posterior oblique ligament (POL) and their related osseous landmarks. METHODS: Insertions of the sMCL and POL were identified and marked in 22 unpaired human cadaveric knees. The surface area, location, positional relations, and morphology of the sMCL and POL insertions and related osseous structures were analyzed on 3-dimensional images. RESULTS: The femoral insertion of the POL was located 18...
October 22, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
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