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https://www.readbyqxmd.com/read/28536977/finite-element-simulations-of-different-hamstring-tendon-graft-lengths-and-related-fixations-in-anterior-cruciate-ligament-reconstruction
#1
Chao Wan, Zhixiu Hao, Zhichang Li, Jianhao Lin
As one of the most frequently used grafts in anterior cruciate ligament (ACL) reconstruction, hamstring tendon (HT) grafts are prepared with different lengths and fixed by specific fixations in knee joints. However, there are incomplete studies to investigate both the joint kinematics and graft biomechanics in the ACL reconstructions with different HT graft lengths. In this paper, three different graft lengths (i.e., 30, 50, and 70 mm) were developed in the ACL reconstruction and analyzed using finite element method under two usual clinical test loads (i...
May 23, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28502387/anterolateral-ligament-reconstruction-techniques-biomechanics-and-clinical-outcomes-a-systematic-review
#2
REVIEW
Nicholas N DePhillipo, Mark E Cinque, Jorge Chahla, Andrew G Geeslin, Robert F LaPrade
PURPOSE: To perform a systematic review of the described anterolateral ligament (ALL) reconstruction techniques, biomechanical performance, and clinical outcomes of ALL reconstruction in the setting of concurrent anterior cruciate ligament (ACL) reconstruction. METHODS: A systematic review was performed according to PRISMA guidelines using the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, PubMed, MEDLINE, and Embase, from 1980 to present...
May 11, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28499921/anterior-cruciate-ligament-soft-tissue-graft-fixation-in-the-elderly-is-there-a-reason-to-use-interference-screws-a-human-cadaver-study
#3
Christoph Domnick, Mirco Herbort, Michael J Raschke, Sarah Habermann, Benedikt Schliemann, Wolf Petersen, André Weimann
PURPOSE: To analyze the ultimate failure load, yield load, stiffness, and cyclic resistance of different anterior cruciate ligament (ACL) soft tissue graft fixation techniques in osteopenic bone. METHODS: In this study, 24 fresh-frozen human cadaveric tibiae (mean age 82.6 years; range 56-96; 6 male and 6 female donors) were used. Quantitative computed tomography was performed to match bone density. Looped porcine flexor tendon grafts were chosen as ACL graft substitutes for tibial graft fixation techniques (n = 8 each): (1) hybrid fixation with an interference screw and extracortical button fixation; (2) extracortical button fixation; and (3) interference screw fixation...
May 9, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28466182/trends-and-incidences-of-ligament-surgeries-and-osteotomies-of-the-knee-an-analysis-of-german-inpatient-records-2005-2013
#4
Christoph Domnick, Patric Garcia, Michael J Raschke, Johannes Glasbrenner, Georg Lodde, Christian Fink, Mirco Herbort
INTRODUCTION: In Germany most surgical procedures of the ligaments of the knee and correcting osteotomies of the knees are performed within an inpatient setting. The purpose of this study was to analyze the available data to assess epidemiological trends and incidences in inpatient knee joint surgery. MATERIALS AND METHODS: Approximately 154 million anonymized DRG inpatient records were collected by the German Federal Statistical Office between 2005 and 2013. These data were screened and analyzed for knee joint surgical ligamental procedures and osteotomies...
May 2, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28460194/graft-diameter-as-a-predictor-for-revision-anterior-cruciate-ligament-reconstruction-and-koos-and-eq-5d-values-a-cohort-study-from-the-swedish-national-knee-ligament-register-based-on-2240-patients
#5
Thorkell Snaebjörnsson, Eric Hamrin Senorski, Olufemi R Ayeni, Eduard Alentorn-Geli, Ferid Krupic, Fredrik Norberg, Jón Karlsson, Kristian Samuelsson
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction (ACLR) using a hamstring tendon (HT) autograft is an effective and widespread method. Recent studies have identified a relationship between the graft diameter and revision ACLR. PURPOSE: To evaluate the influence of the graft diameter on revision ACLR and patient-reported outcomes in patients undergoing primary ACLR using HT autografts. STUDY DESIGN: Cohort study; Level of evidence, 2...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28458784/evaluating-the-functional-results-and-complications-of-autograft-vs-allograft-use-for-reconstruction-of-the-anterior-cruciate-ligament-a-systematic-review
#6
REVIEW
Ojas Pujji, Nikita Keswani, Naomi Collier, Marion Black, Lucy Doos
The aim of our review is to identify the reconstruction technique that has a superior functional outcome and decreased number of complications for the anterior cruciate ligament (ACL). We have divided our review into 2 sections. Our primary question evaluates the functional results and complications of autografts compared to allografts for ACL reconstruction. Our subsidiary question evaluates the functional results and complications of bone-patellar tendon-bone (BPTB) autografts compared to hamstring tendon autografts...
February 20, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28439635/high-incidence-of-partially-anatomic-tunnel-placement-in-primary-single-bundle-acl-reconstruction
#7
Andrea Achtnich, Francesco Ranuccio, Lukas Willinger, Jonas Pogorzelski, Andreas B Imhoff, Sepp Braun, Elmar Herbst
PURPOSE: The purpose of this study was to evaluate tunnel position and width in failed primary single-bundle (SB) anterior cruciate ligament (ACL) reconstructions. It was hypothesized that both femoral and tibial bone tunnels are frequently malplaced in terms of a partially anatomic position in the setting of failed SB ACL reconstruction. METHODS: Patients with recurrent instability following isolated SB ACL reconstruction using hamstring tendon autografts, undergoing revision ACL surgery, were retrospectively included...
April 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28426251/current-concepts-of-the-anterolateral-ligament-of-the-knee-anatomy-biomechanics-and-reconstruction
#8
Matthew J Kraeutler, K Linnea Welton, Jorge Chahla, Robert F LaPrade, Eric C McCarty
In 1879, Paul Segond described an avulsion fracture (now known as a Segond fracture) at the anterolateral proximal tibia with the presence of a fibrous band at the location of this fracture. Although references to this ligament were occasionally made in the anatomy literature after Segond's discovery, it was not until 2012 that Vincent et al named this ligament what we know it as today, the anterolateral ligament (ALL) of the knee. The ALL originates near the lateral epicondyle of the distal femur and inserts on the proximal tibia near Gerdy's tubercle...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28409108/hamstring-graft-biological-preparation-for-anterior-cruciate-ligament-reconstruction
#9
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/28400663/tunnel-widening-prevention-with-the-allo-achilles-tendon-graft-in-anterior-cruciate-ligament-reconstruction-surgical-tips-and-short-term-followup
#10
Dong Won Suh, Seung Beom Han, Woo Jin Yeo, Won Hee Lee, Jae Ho Kwon, Bong Soo Kyung
BACKGROUND: Tunnel widening (TW) after anterior cruciate ligament (ACL) reconstruction can be a serious complication, and there is controversy over how to prevent it. This study aimed to suggest surgical approaches to prevent TW using an allo-Achilles tendon graft, and then to evaluate TW after these surgical tips were applied. MATERIALS AND METHODS: Sixty two patients underwent ACL reconstruction with an allo-Achilles tendon graft. Four surgical approaches were used: Making a tibial tunnel by bone impaction, intraarticular reamer application, bone portion application for the femoral tunnel, and an additional bone plug application for the tibial tunnel...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28349206/impingement-of-the-patellar-component-against-the-tibial-post-after-posterior-stabilized-and-constrained-tka-a-pilot-study
#11
Yukihide Minoda, Ryo Sugama, Yoichi Ohta, Hiroaki Nakamura
INTRODUCTION: Patella-post impingement (PPI), contact of the patellar component with the tibial post, occurs during deep knee flexion after posterior stabilized total knee arthroplasty (TKA). PPI can cause anterior knee pain, increased patellar pressure, wear of the polyethylene patellar component and tibial post, and poor range of motion. There have been no reports on the relationship between PPI and tibial post design. The aim of this study was to compare different tibial post designs with regard to PPI incidence...
March 27, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28298055/the-effect-of-graft-pretensioning-on-bone-tunnel-diameter-and-bone-formation-after-anterior-cruciate-ligament-reconstruction-in-a-rat-model-evaluation-with-micro-computed-tomography
#12
Jian-Chun Zong, Richard Ma, Hongsheng Wang, Guang-Ting Cong, Amir Lebaschi, Xiang-Hua Deng, Scott A Rodeo
BACKGROUND: Moderate graft pretensioning in anterior cruciate ligament (ACL) reconstruction is paramount to restore knee stability and normalize knee kinematics. However, little is known about the effect of graft pretensioning on graft-to-bone healing after ACL reconstruction. HYPOTHESIS: Moderate graft pretensioning will improve bone formation within the bone tunnel after ACL reconstruction, resulting in superior load to failure. STUDY DESIGN: Controlled laboratory study...
May 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28293698/anterolateral-ligament-abnormalities-are-associated-with-peripheral-ligament-and-osseous-injuries-in-acute-ruptures-of-the-anterior-cruciate-ligament
#13
Camilo Partezani Helito, Paulo Victor Partezani Helito, Renata Vidal Leão, Marco Kawamura Demange, Marcelo Bordalo-Rodrigues
PURPOSE: Few studies have used MRI to identify the ALL. As it was shown that it is not possible to precisely characterize this ligament in all examination, it is important to identify concomitant lesions that can help in diagnosing ALL abnormalities. It is important to characterise this injury due to its association with anterolateral knee instability. Thus, the present study was performed to determine the frequency of ALL injuries in patients with acute ACL rupture and to analyse its associated knee lesions...
April 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28282242/influence-of-the-injury-to-surgery-interval-on-the-healing-potential-of-human-anterior-cruciate-ligament-derived-cells
#14
Takao Inokuchi, Tomoyuki Matsumoto, Koji Takayama, Naoki Nakano, Shurong Zhang, Daisuke Araki, Takehiko Matsushita, Ryosuke Kuroda
BACKGROUND: Vascular CD34+ cells in anterior cruciate ligament (ACL) tissue have the potential for high proliferation and multilineage differentiation that can accelerate tendon-bone healing. While patient characteristics, such as age, can affect tendon-bone healing, the influence of elapsed time after injury on the healing process is unclear. HYPOTHESIS: Cells obtained during the early phase after injury will exhibit a greater tendon-bone healing potential compared with chronic phase counterparts when applied to an immunodeficient rat model of ACL reconstruction...
May 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28277745/3d-computed-tomography-evaluation-of-morphological-changes-in-the-femoral-tunnel-after-medial-patellofemoral-ligament-reconstruction-with-hamstring-tendon-graft-for-recurrent-patellar-dislocation
#15
Keisuke Kita, Yoshinari Tanaka, Yukiyoshi Toritsuka, Hiroshi Amano, Ryohei Uchida, Yoshiki Shiozaki, Rikio Takao, Shuji Horibe
BACKGROUND: Reconstruction of the medial patellofemoral ligament (MPFL) for recurrent lateral patellar dislocation is gaining popularity. However, the morphological changes in the femoral tunnel after MPFL reconstruction are still not fully documented. PURPOSE: This study used 3-dimensional (3D) computed tomography to evaluate morphological changes in the femoral tunnel after MPFL reconstruction with hamstring tendon graft to investigate factors affecting the phenomenon and to elucidate whether it is associated with clinical outcomes...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28267362/variability-in-patellofemoral-alignment-measurements-on-mri-influence-of-knee-position
#16
Alejandro Marquez-Lara, Jason Andersen, Leon Lenchik, Cristin M Ferguson, Pushpender Gupta
OBJECTIVE: The purpose of this study was to determine the variability of distances between four distinct anatomic landmarks used for the evaluation of patellofemoral alignment while implementing controlled changes in patient positioning during MRI. MATERIALS AND METHODS: Limited MRI was performed of 12 knees in healthy volunteers (10 men, two women; mean age, 28 years) with the knees in four different positions. The four landmarks used were TT (the most anterior point of the osseous tibial tubercle), TG (the nadir of the cartilaginous trochlear groove), PT (the center of the patellar tendon insertion on the tibia), and PCL (the medial border of the posterior cruciate ligament at its insertion along the posterior tibia)...
May 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28211291/a-biomechanical-analysis-of-tibial-acl-reconstruction-with-graft-length-mismatch
#17
Evan B Gaines, Diana Lau, Qais Naziri, Westley Hayes, Julio J Jauregui, Bhaveen H Kapadia, William P Urban, Bashir A Zikria
INTRODUCTION: The incidence of graft length mismatch (GLM) during anterior cruciate ligament (ACL) reconstruction is reported to be up to 13%, with a rate of 20% when using bone-patellar tendon-bone (BPTB) allografts. Multiple techniques have been described to accommodate for the longer BPTB graft. As no study has compared the biomechanical properties of these methods (with cyclic loading), we evaluated the strength of four different surgical techniques used to accommodate for GLM during ACL reconstruction...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28207972/anatomical-study-of-the-inferior-patellar-pole-and-patellar-tendon
#18
M Edama, I Kageyama, M Nakamura, T Kikumoto, E Nakamura, W Ito, T Takabayashi, T Inai, H Onishi
In this study, detailed investigations into the shape of the inferior patellar pole, the site of the patellar tendon attachment, and the length and course of the patellar tendon were performed with the aim of examining the anatomical factors involved in the developmental mechanism of patellar tendinitis. The investigation examined 100 legs from 50 cadavers. The inferior patellar pole was classified into three types: pointed, intermediate, and blunt. The attachment of the patellar tendon to the inferior patellar pole was classified into two types: an anterior and a posterior...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28198793/proximity-and-risks-of-the-anterior-neurovascular-and-tendinous-anatomy-of-the-distal-leg-relative-to-anteriorly-applied-distal-locking-screws-for-tibia-nailing-a-plea-for-open-insertion
#19
Phillip M Mitchell, Cory A Collinge, Eric Barcak, Edward Perez, Kostas Triantafillou
PURPOSE: To determine the proximity and potential risks to distal leg anatomy from anterior to posteriorly (A-P) applied distal tibia locking screws for tibial nailing. DESIGN: Retrospective. SETTING: ACS level I trauma center. PATIENTS/PARTICIPANTS: Twenty consecutive adult patients undergoing computed tomograms with intravenous contrast (CTAs) on uninjured legs. MAIN OUTCOME MEASUREMENTS: Simulated 5 mm distal interlocking screws placed in the A-P axis of an ideally placed tibial nail at 10 mm increments from the tibial plafond (10 to 40mm) were studied in relation to the distal leg's anterior anatomy...
February 14, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28195983/management-of-the-relapsed-clubfoot-following-treatment-using-the-ponseti-method
#20
Pooya Hosseinzadeh, Derek M Kelly, Lewis E Zionts
The Ponseti method to treat idiopathic clubfoot deformity has proven to be reliable, and several centers have reported excellent outcomes. Although the method has been dependable in obtaining initial correction of the foot, relapse rates ranging from 26% to 48% have been reported. When a relapsed deformity is detected early, treatment with a short series of manipulations and cast applications followed by resumption of postcorrective bracing may be all that is required to regain and maintain correction. In patients aged >2...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
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