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https://www.readbyqxmd.com/read/28840143/allograft-maturation-after-reconstruction-of-the-anterior-cruciate-ligament-is-dependent-on-graft-parameters-in-the-sagittal-plane
#1
Michael Rose, Dennis Crawford
BACKGROUND: Allograft healing (ligamentization) after reconstruction of the anterior cruciate ligament (ACL) is dependent on multiple factors, including tissue processing, host biologic environment, and biomechanical stressors. Magnetic resonance imaging (MRI) can be used to assess graft maturation after ACL reconstruction. HYPOTHESIS: A significant difference will exist in the MRI analysis between 2 distinct allograft constructs. Specifically, the MRI signal-to-noise quotient (SNQ) value will be smaller in quadrupled hamstring tendon (HT) allografts compared with doubled tibialis anterior (TA) allografts due to the difference in graft geometry (surface area-to-volume ratio)...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28800919/similar-outcomes-after-osteochondral-allograft-transplantation-in-anterior-cruciate-ligament-intact-and-reconstructed-knees-a-comparative-matched-group-analysis-with-minimum-2-year-follow-up
#2
Dean Wang, Claire D Eliasburg, Tim Wang, Ryan R Fader, Francesca R Coxe, Mollyann D Pais, Riley J Williams
PURPOSE: To compare failure rates and clinical outcomes of osteochondral allograft transplantation (OCA) in anterior cruciate ligament (ACL)-intact versus ACL-reconstructed knees at midterm follow-up. METHODS: After a priori power analysis, a prospective registry of patients treated with OCA for focal chondral lesions ≥2 cm(2) in size with minimum 2-year follow-up was used to match ACL-reconstructed knees with ACL-intact knees by age, sex, and primary chondral defect location...
August 8, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28748489/hamstring-autograft-maturation-is-superior-to-tibialis-allograft-following-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction
#3
Sang-Gyun Kim, Soo-Hyun Kim, Jae-Gyoon Kim, Ki-Mo Jang, Hong-Chul Lim, Ji-Hoon Bae
PURPOSE: Using second-look arthroscopy, graft maturation was investigated and compared between hamstring (HA) autografts and tibialis anterior (TA) allografts after anatomic single-bundle anterior cruciate ligament reconstruction (ACLR). METHODS: Fifty-six patients who underwent second-look arthroscopy after anatomic single-bundle ACLR with either HA autografts (26, HA group) or TA allografts (30, TA group) from 2007 to 2016 were retrospectively reviewed. Graft maturation on second-look arthroscopy was evaluated in terms of four parameters: graft integrity (tear), synovial coverage, graft tension, and graft vascularization...
July 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28636429/autograft-versus-allograft-for-posterior-cruciate-ligament-reconstruction-an-updated-systematic-review-and-meta-analysis
#4
John W Belk, Matthew J Kraeutler, Justin M Purcell, Eric C McCarty
BACKGROUND: Multiple studies have demonstrated a higher risk of graft failure after anterior cruciate ligament reconstruction with allograft, but limited data are available comparing outcomes of posterior cruciate ligament reconstruction (PCLR) with autograft versus allograft. PURPOSE: To compare the clinical outcomes of autograft versus allograft for primary PCLR. STUDY DESIGN: Systematic review. METHODS: A systematic review was performed by searching PubMed, the Cochrane Library, and EMBASE to locate studies (level of evidence I-III) comparing clinical outcomes of autograft versus allograft in patients undergoing primary PCLR with the conventional transtibial technique...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28373946/anteromedial-portal-anterior-cruciate-ligament-reconstruction-with-tibialis-anterior-allograft
#5
Steven Shamah, Daniel Kaplan, Eric J Strauss, Brian Singh
In an effort to better restore normal joint function and kinematics, recent emphasis has been placed on surgical techniques that provide a more anatomic reconstruction of the anterior cruciate ligament (ACL). With femoral tunnel placement shown to play a vital role in the biomechanics, stability, and clinical outcomes after ACL reconstruction, approaches that better approximate the ACL's native femoral origin have been adopted. The independent anteromedial portal technique is thought to better position the femoral tunnel within the native ACL footprint and leave the graft more posteroinferior on the wall of the lateral femoral condyle than the more traditional transtibial approach...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28373945/technique-for-arthroscopic-assisted-primary-anterior-cruciate-ligament-reconstruction-using-doubled-tibialis-anterior-tendon
#6
Michael Rose, Dennis Crawford
Advances in surgical technique and our knowledge of anterior cruciate ligament (ACL) anatomy have resulted in a marked increase in options for ACL reconstruction. Currently, patient age and activity level, surgeon preference and experience, and cost are factors influencing the type of reconstruction recommended to address knee instability. We present a simplified transtibial method of ACL reconstruction using a single-bundle, doubled tibialis anterior allograft. This method uses fixation with a suspensory device on the femur and a bio-composite interference screw on the tibia...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28353048/what-factors-influence-the-biomechanical-properties-of-allograft-tissue-for-acl-reconstruction-a-systematic-review
#7
Drew A Lansdown, Andrew J Riff, Molly Meadows, Adam B Yanke, Bernard R Bach
BACKGROUND: Allograft tissue is used in 22% to 42% of anterior cruciate ligament (ACL) reconstructions. Clinical outcomes have been inconsistent with allograft tissue, with some series reporting no differences in outcomes and others reporting increased risk of failure. There are numerous variations in processing and preparation that may influence the eventual performance of allograft tissue in ACL reconstruction. We sought to perform a systematic review to summarize the factors that affect the biomechanical properties of allograft tissue for use in ACL reconstruction...
March 28, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28290752/mri-based-assessment-of-lower-extremity-muscle-volumes-in-patients-before-and-after-acl-reconstruction
#8
Grant E Norte, Katherine R Knaus, Chris Kuenze, Geoffrey G Handsfield, Craig H Meyer, Silvia S Blemker, Joseph M Hart
CONTEXT: Study of muscle volumes in patients after anterior cruciate ligament (ACL) injury and reconstruction (ACL-R) is largely limited to cross-sectional assessment of the thigh musculature, which may inadequately describe post-traumatic and post-surgical muscle function. No studies have prospectively examined the influence of ACL injury and reconstruction on lower extremity muscle volumes. OBJECTIVE: Assess magnetic resonance imaging (MRI) derived lower extremity muscle volumes, and quantify quadriceps strength and activation in patients following ACL injury and reconstruction...
March 14, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28159425/magnetic-resonance-imaging-evaluation-of-physeal-violation-in-adolescents-after-transphyseal-anterior-cruciate-ligament-reconstruction
#9
Joon-Ho Wang, Kang-Min Son, Dae-Hee Lee
PURPOSE: To quantify and compare the amount and location of physis violation of the distal femur and proximal tibia after transphyseal anterior cruciate ligament (ACL) reconstruction in skeletally immature patients. METHODS: This study included 19 patients with open physes of the distal femur and proximal tibia who underwent ACL reconstruction with tibialis anterior allografts. Physeal tunnel volume and location on the growth plate, as well as obliquity to the growth plate, were measured by 3-dimensional postoperative magnetic resonance imaging of the distal femur and proximal tibia...
January 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27876265/a-prospective-randomized-comparison-of-two-distinct-allogenic-tissue-constructs-for-anterior-cruciate-ligament-reconstruction
#10
RANDOMIZED CONTROLLED TRIAL
Michael B Rose, Christopher Domes, Mehwish Farooqi, Dennis C Crawford
BACKGROUND: Conduct a prospective randomized study to compare clinical outcomes of anterior cruciate ligament (ACL) reconstruction using quadrupled hamstring tendon (HT) allograft or doubled tibialis anterior (TA) allograft. Limited level 1 data exist comparing outcomes of different soft tissue allograft constructs for ACL reconstruction. We hypothesized no difference would exist in the patient reported outcomes (PRO), arthrometric testing, or rate of re-rupture between the two constructs...
December 2016: Knee
https://www.readbyqxmd.com/read/27836690/clinical-outcomes-of-acl-reconstruction-with-tibialis-anterior-allograft-using-an-anteromedial-portal-approach
#11
Jason Capo, Steven D Shamah, Laith Jazrawi, Eric Strauss
No abstract text is available yet for this article.
December 2016: Knee
https://www.readbyqxmd.com/read/27766344/anterior-laxity-and-patient-reported-outcomes-7%C3%A2-years-after-acl-reconstruction-with-a-fresh-frozen-tibialis-allograft
#12
Emily Meike, S M Howell, M L Hull
PURPOSE: After reconstructing a torn ACL with a soft tissue allograft, the long-term healing process of graft maturation following the short-term healing process of graft incorporation into the bone tunnels might lead to recurring instability and concomitant decreases in the activity level, function, and patient satisfaction. Relying on roentgen stereophotogrammetric analysis (RSA), the primary purpose was to determine whether anterior laxity increased and whether patient-reported outcomes declined between 1 and 7 years for a particular graft construct, surgical technique, and rehabilitation programme...
May 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27747787/effect-of-forefoot-strike-on-lower-extremity-muscle-activity-and-knee-joint-angle-during-cutting-in-female-team-handball-players
#13
Naruto Yoshida, Shun Kunugi, Sonoko Mashimo, Yoshihiro Okuma, Akihiko Masunari, Shogo Miyazaki, Tatsuya Hisajima, Shumpei Miyakawa
BACKGROUND: The purpose of this study is to examine the effects of different strike forms, during cutting, on knee joint angle and lower limb muscle activity. METHODS: Surface electromyography was used to measure muscle activity in individuals performing cutting manoeuvres involving either rearfoot strikes (RFS) or forefoot strikes (FFS). Three-dimensional motion analysis was used to calculate changes in knee angles, during cutting, and to determine the relationship between muscle activity and knee joint angle...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27570169/braking-reaction-time-after-right-knee-anterior-cruciate-ligament-reconstruction-a-comparison-of%C3%A2-3-grafts
#14
Bradley R Wasserman, Brian C Singh, Daniel J Kaplan, Maxwell Weinberg, Robert Meislin, Laith M Jazrawi, Eric J Strauss
PURPOSE: To determine when patients recover the ability to safely operate the brakes of an automobile after a right-knee anterior cruciate ligament reconstruction (ACLR). METHODS: A computerized driving simulator was used to determine braking ability after an isolated right-knee ACLR. Thirty healthy volunteers were tested at 1 visit to determine normal mean values, and 27 treatment subjects were tested at 1 week, 3 weeks, and 6 weeks after ACLR. Nine study subjects were treated with a patella tendon (BPTB) autograft, 9 were treated with a hamstring (HS) autograft, and 9 were treated with a tibialis anterior (TA) allograft...
January 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27194499/hamstring-autograft-had-better-long-term-survivorship-than-tibialis-posterior-tendon-allograft-for-anterior-cruciate-ligament-reconstruction
#15
COMMENT
Alan Getgood
No abstract text is available yet for this article.
May 18, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/26996346/allograft-and-autograft-transphyseal-anterior-cruciate-ligament-reconstruction-in-skeletally-immature-patients-outcomes-and-complications
#16
Christopher M Larson, Christie S Heikes, Christopher I Ellingson, Corey A Wulf, M Russell Giveans, Rebecca M Stone, Asheesh Bedi
PURPOSE: The purpose of the study was to evaluate outcomes, graft failure rates, and complications after transphyseal soft-tissue allograft and autograft anterior cruciate ligament (ACL) reconstruction (ACLR) in patients with open growth plates. METHODS: Twenty-nine skeletally immature athletes (30 knees) with a mean age of 13.9 years (range, 9 to 16 years) underwent transphyseal ACLR (22 with quadrupled hamstring autograft and 8 with tibialis anterior allograft)...
May 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/26987981/hamstring-tendon-autograft-versus-fresh-frozen-tibialis-posterior-allograft-in-primary-arthroscopic-anterior-cruciate-ligament-reconstruction-a-retrospective-cohort-study-with-three-to-six%C3%A2-years-follow-up
#17
Mohsen Mardani-Kivi, Mahmoud Karimi-Mobarakeh, Sohrab Keyhani, Khashayar Saheb-Ekhtiari, Keyvan Hashemi-Motlagh, Ali Sarvi
INTRODUCTION: Selection of various grafts for anterior cruciate ligament (ACL) reconstructions have been employed in order to improve on stability and function of the knee. This study aimed to compare stability and function of the knee after ACL arthroscopic reconstruction by single-loop tibialis posterior (TP) allograft and four-strand hamstring tendon (HT) autograft. MATERIALS AND METHODS: The retrospective cohort study included 104 patients in the TP group matched with 118 patients in the HT group in terms of demographic characteristics, associated meniscus injury, subjective and objective knee characteristics...
September 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26409102/lower-extremity-muscle-activation-onset-times-during-the-transition-from-double-leg-stance-to-single-leg-stance-in-anterior-cruciate-ligament-injured-subjects
#18
Bart Dingenen, Luc Janssens, Thomas Luyckx, Steven Claes, Johan Bellemans, Filip F Staes
The goal of this study was to evaluate muscle activation onset times (MAOT) of both legs during a transition task from double-leg stance (DLS) to single-leg stance (SLS) in anterior cruciate ligament injured (ACLI) (n=15) and non-injured control subjects (n=15) with eyes open and eyes closed. Significantly delayed MAOT were found in the ACLI group compared to the control group for vastus lateralis, vastus medialis obliquus, hamstrings medial, hamstrings lateral, tibialis anterior, peroneus longus and gastrocnemius in both vision conditions, for gluteus maximus and gluteus medius with eyes open and for tensor fascia latae with eyes closed...
December 2015: Human Movement Science
https://www.readbyqxmd.com/read/26311445/autograft-versus-allograft-anterior-cruciate-ligament-reconstruction-a-prospective-randomized-clinical-study-with-a-minimum-10-year-follow-up
#19
RANDOMIZED CONTROLLED TRIAL
Craig R Bottoni, Eric L Smith, James Shaha, Steven S Shaha, Sarah G Raybin, John M Tokish, Douglas J Rowles
BACKGROUND: The use of allografts for anterior cruciate ligament (ACL) reconstruction in young athletes is controversial. No long-term results have been published comparing tibialis posterior allografts to hamstring autografts. PURPOSE: To evaluate the long-term results of primary ACL reconstruction using either an allograft or autograft. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: From June 2002 to August 2003, patients with a symptomatic ACL-deficient knee were randomized to receive either a hamstring autograft or tibialis posterior allograft...
October 2015: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/26227787/allograft-anterior-cruciate-ligament-reconstruction-in-patients-younger-than-25-years
#20
Thomas R Carter, Michael T Rabago
Purpose The purpose of this study was to evaluate the outcomes for patients younger than 25 years who had anterior cruciate ligament (ACL) reconstructions with allograft tissue. Methods A total of 52 ACL reconstructions performed with fresh-frozen, nonirradiated tibialis or Achilles allografts in active patients younger than 25 years. Outcome evaluations included the International Knee Documentation Committee (IKDC) objective and subjective forms, KT-1000 arthrometry and Lysholm. Results Forty-two patients were available for follow-up at an average follow-up of 65 months (range, 33-99 months)...
May 2016: Journal of Knee Surgery
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