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Meniscus allograft

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https://www.readbyqxmd.com/read/27909660/osteochondral-proximal-tibial-and-lateral-meniscal-allograft-transplant
#1
Guillem Gonzalez-Lomas, Andrew P Dold, Daniel J Kaplan, David J Fralinger, Laith Jazrawi
Knee pain in young, active patients with meniscus-deficient knees and articular cartilage damage can present a challenge to treatment. Meniscal allograft transplantation (MAT) has shown good clinical results as treatment for meniscus deficiency; however, worse outcomes have been observed in patients with significant chondral damage. The development of chondral restorative techniques such as osteochondral allograft transplantation (OCA) has expanded the population of patients who may benefit from MAT. We present a case of proximal tibial osteochondral and lateral meniscal allograft transplant...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27793202/enhanced-cellular-infiltration-of-human-adipose-derived-stem-cells-in-allograft-menisci-using-a-needle-punch-method
#2
Rachel C Nordberg, Adisri Charoenpanich, Christopher E Vaughn, Emily H Griffith, Matthew B Fisher, Jacqueline H Cole, Jeffrey T Spang, Elizabeth G Loboa
BACKGROUND: The meniscus plays a crucial role in knee joint stability, load transmission, and stress distribution. Meniscal tears are the most common reported knee injuries, and the current standard treatment for meniscal deficiency is meniscal allograft transplantation. A major limitation of this approach is that meniscal allografts do not have the capacity to remodel and maintain tissue homeostasis due to a lack of cellular infiltration. The purpose of this study was to provide a new method for enhanced cellular infiltration in meniscal allografts...
October 28, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27751607/meniscal-allograft-transplantation-for-symptomatic-knee-after-meniscectomy-of-torn-discoid-medial-meniscus-report-of-three-cases
#3
Sung Il Wang
In symptomatic discoid medial meniscus, partial meniscectomy is the principal treatment method and can yield promising short-term results. However, unlike the nondiscoid meniscus, discoid medial meniscus is frequently associated with horizontal cleavage tears, attributable to the presence of myxoid degeneration in the intrameniscal substance, in that it may potentially occur deteriorating long-term results because of re-tearing of remaining meniscus or secondary degeneration of cartilage of the medial compartment after meniscectomy...
October 14, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27696125/meniscal-allograft-subluxations-are-not-associated-with-preoperative-native-meniscal-subluxations
#4
Bum-Sik Lee, Seong-Il Bin, Jong-Min Kim, Jae Hyan Kim, Eic Ju Lim
PURPOSE: To determine the relationship between preoperative subluxation of the original menisci and postoperative graft subluxation after lateral meniscal allograft transplantation (MAT). METHODS: Fourteen patients who underwent isolated lateral MATs in meniscus-deficient knees with a low-grade chondral lesion (≤ICRS grade 2) were assessed. Lateral subluxation of the native meniscus before meniscectomy and those of remaining meniscal tissue before MAT were measured on mid-coronal MRI scans taken at each time point...
September 30, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27692556/long-term-survival-analysis-of-meniscus-allograft-transplantation-with-bone-fixation
#5
Jong-Min Kim, Seong-Il Bin, Bum-Sik Lee, Nam-Ki Kim, Ju-Ho Song, Jun-Weon Choi, Chang-Rack Lee
PURPOSE: To investigate the long-term clinical results and clinical survival rate of meniscus allograft transplantation (MAT) with bone fixation. METHODS: The inclusion criteria of this study were previous MAT with bone fixation technique in our institution and minimum follow-up duration of 8 years. Potential subjects were identified using the medical records and database that was prospectively collected from December 1996 to December 2005. The exclusion criteria were diffuse International Cartilage Repair Society grade IV articular cartilage degeneration that was not treated with a concomitant or staged cartilage repair procedure...
September 27, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27642774/hot-topics-in-the-multicenter-orthopedics-outcomes-network-anterior-cruciate-ligament
#6
Robert W Westermann, Thomas Sean Lynch, Kurt P Spindler
Since 2015, the Multicenter Orthopedic Outcomes Network (MOON) has addressed several factors associated with patient outcome after anterior cruciate ligament (ACL) injury. These factors include predictors of high grade knee laxity, the impact of meniscus treatment on joint space narrowing after surgery, graft selection, treating diabetic patients, predictors of clinically significant pain, and outcomes of patients where meniscus tears were left in situ without treatment. The presence of meniscus tears and generalized laxity predict a lax examination under anesthesia prior to surgery...
October 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27568219/double-layer-versus-single-layer-bone-patellar-tendon-bone-anterior-cruciate-ligament-reconstruction-a-prospective-randomized-study-with-3-year-follow-up
#7
Xiaoliang Mei, Zhenxiang Zhang, Jingwen Yang
PURPOSE: To evaluate the clinical results of a randomized controlled trial of single-layer versus double-layer bone-patellar tendon-bone (BPTB) anterior cruciate ligament (ACL) reconstruction. METHODS: Fifty-eight subjects who underwent primary ACL reconstruction with a BPTB allograft were prospectively randomized into two groups: single-layer reconstruction (n = 31) and double-layer reconstruction (n = 27). The following evaluation methods were used: clinical examination, KT-1000 arthrometer measurement, muscle strength, Tegner activity score, Lysholm score, subjective rating scale regarding patient satisfaction and sports performance level, graft retear, contralateral ACL tear, and additional meniscus surgery...
August 27, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27562342/international-meniscus-reconstruction-experts-forum-imref-2015-consensus-statement-on-the-practice-of-meniscal-allograft-transplantation
#8
Alan Getgood, Robert F LaPrade, Peter Verdonk, Wayne Gersoff, Brian Cole, Tim Spalding
Meniscal allograft transplantation (MAT) has become relatively commonplace in specialized sport medicine practice for the treatment of patients with a symptomatic knee after the loss of a functional meniscus. The technique has evolved since the 1980s, and long-term results continue to improve. However, there still remains significant variation in how MAT is performed, and as such, there remains opportunity for outcome and graft survivorship to be optimized. The purpose of this article was to develop a consensus statement on the practice of MAT from key opinion leaders who are members of the International Meniscus Reconstruction Experts Forum so that a more standardized approach to the indications, surgical technique, and postoperative care could be outlined with the goal of ultimately improving patient outcomes...
August 25, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27543406/return-to-play-following-meniscus-surgery
#9
REVIEW
Alaina M Brelin, John-Paul H Rue
Meniscus tears are commonly encountered in the athletic population and can result in significant loss of playing time. Current treatment methods for acute tears consist of meniscectomy and meniscal repair, whereas meniscal allograft transplant is reserved as a salvage procedure for symptomatic meniscectomized patients who desire a more functional knee. This review describes the postoperative rehabilitation protocol for each procedure and evaluates the outcomes in existing literature as it pertains to the athlete...
October 2016: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27517057/anterior-cruciate-ligament-reconstruction-using-a-combination-of-autograft-and-allograft-tendon-a-moon-cohort-study
#10
James E Darnley, Benjamin Léger-St-Jean, Angela D Pedroza, David C Flanigan, Christopher C Kaeding, Robert A Magnussen
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction with hamstring autografts less than 8.5 mm in diameter is associated with worse patient-reported outcome scores and increased risk of revision surgery compared with reconstructions performed with larger grafts. One proposed solution to small autograft harvest is to create a hybrid graft by augmenting autografts with allograft tissue to increase graft diameter. PURPOSE: To compare hybrid autograft/allograft ACL reconstruction to autograft ACL reconstruction, specifically analyzing the patient-reported outcome scores and the risk of revision surgery at 2 years postoperative...
July 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27462536/lateral-meniscal-allograft-transplantation-the-bone-trough-technique
#11
Jorge Chahla, Javier Olivetto, Chase S Dean, Raphael Serra Cruz, Robert F LaPrade
The lateral meniscus plays a critical role in the stability and health of the knee. Treating patients who have undergone a total lateral meniscectomy or functional equivalent is challenging, especially young and active patients. Current literature regarding meniscal tears supports that repair should be the first surgical option. Moreover, it is recommended to preserve as much meniscal tissue as possible. In cases in which a total or functional meniscectomy is a pre-existing condition, a lateral meniscal allograft transplantation is a possible option...
April 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27436019/changes-in-the-t2-value-of-cartilage-after-meniscus-transplantation-over-1%C3%A2-year
#12
Sun-Young Park, Sang Hoon Lee, Min Hee Lee, Hye Won Chung, Myung Jin Shin
OBJECTIVES: To evaluate the changes in the mean T2 values of articular cartilage on serial follow-up images up to 1 year in patients who underwent lateral meniscus allograft transplantation (MAT). METHODS: Fifty-two patients who underwent lateral MAT surgery at our hospital were evaluated preoperatively and at 2 days, 6 weeks, 3 months, 6 months, and 1 year after MAT using 3.0-T magnetic resonance imaging (MRI) that included T2 mapping. T2 value changes according to the arthroscopic grading of chondromalacia were evaluated in the lateral and medial compartment...
July 19, 2016: European Radiology
https://www.readbyqxmd.com/read/27423673/surgical-techniques-and-radiological-findings-of-meniscus-allograft-transplantation
#13
REVIEW
Hoseok Lee, Sang Yub Lee, Young Gon Na, Sung Kwan Kim, Jae Hyuck Yi, Jae Kwang Lim, So Mi Lee
Meniscus allograft transplantation has been performed over the past 25 years to relieve knee pain and improve knee function in patients with an irreparable meniscus injury. The efficacy and safety of meniscus allograft transplantation have been established in numerous experimental and clinical researches. However, there is a lack of reviews to aid radiologists who are routinely interpreting images and evaluating the outcome of the procedures, and also meniscus allograft transplantation is not widely performed in most hospitals...
August 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27422172/which-are-the-most-reliable-methods-of-predicting-the-meniscal-size-for-transplantation
#14
Camila Cohen Kaleka, Alfredo Santos Netto, Júlio César Almeida E Silva, Mariana Key Toma, Ricardo de Paula Leite Cury, Nilson Roberto Severino, Claudio Santili
BACKGROUND: Although the size of the meniscal allograft is crucial during meniscal transplantation, the accuracy of meniscal measurement methods is still under debate. A number of methods based on radiographic and magnetic resonance imaging (MRI) data as well as on anthropometric data have been proposed, but their reproducibility and reliability are still unclear. PURPOSE: To compare meniscal length and width as measured by different techniques (anthropometric and plain radiographic) to establish which of these 2 methods is more reliable and cost-effective for determining the meniscal size in comparison to MRI...
July 15, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27410773/a-clinical-platform-for-understanding-the-relationship-between-joint-contact-mechanics-articular-cartilage-changes-after-meniscal-surgery
#15
Suzanne Maher, Hongsheng Wang, Matthew F Koff, Nicole Belkin, Hollis G Potter, Scott Rodeo
Injury to the meniscus of the knee has been implicated as a significant risk factor for the subsequent development of osteoarthritis, but the mechanisms of joint degeneration are unclear. Our objective was to develop a clinically applicable methodology to evaluate the relationship of joint contact mechanics at the time of surgery to biological changes of articular cartilage as a function of time following surgery. A series of pre-, intra- and post-operative protocols were developed which utilized electronic sensors for the direct measurement of contact mechanics, and advanced imaging to assess cartilage health...
July 13, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27331034/meniscus-tear-surgery-and-meniscus-replacement
#16
REVIEW
Javier Vaquero, Francisco Forriol
OBJECTIVE: the menisci are easily injured and difficult to repair. The aim of this study was to analyze the current state of meniscal surgery aimed at preserving morphology and conserving the biomechanics of the knee to prevent joint degeneration. METHODOLOGY: a search of the electronic medical literature database Medline was conducted, from http://www.ncbi.nlm.nih.gov/pubmed. The search was not limited by language. Candidate articles were identified by searching for those that included the keywords meniscus, surgery, suture, implant, allograft...
January 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27330948/medial-meniscal-allograft-transplantation-the-bone-plug-technique
#17
Chase S Dean, Javier Olivetto, Jorge Chahla, Raphael Serra Cruz, Robert F LaPrade
The medial meniscus is crucial for knee homeostasis. Treating patients who have undergone a subtotal or total meniscectomy, or equivalent irreparable tear pattern, can be extremely challenging, especially in young, active patients. The importance of meniscal preservation has been reported by several authors. Meniscal repair is now widely accepted as the first surgical option for treating medial meniscal tears. Moreover, current guidelines recommend preserving as much meniscal tissue as possible. Treating a symptomatic medial meniscectomized knee is challenging because of limited surgical options...
April 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27296871/risk-factors-for-radiographic-progression-of-osteoarthritis-after-meniscus-allograft-transplantation
#18
Ji Hyun Ahn, Ho Won Kang, Tae Yeong Yang, Jang Yun Lee
PURPOSE: To identify risk factors that predict radiographic progression of osteoarthritis after meniscus allograft transplantation (MAT) using multivariate logistic regression. METHODS: Inclusion criteria were consecutive patients who underwent medial or lateral MATs from January 2005 to September 2012 by one surgeon. Exclusion criteria were lack of postoperative magnetic resonance image, loss to follow-up for a minimum of 3 years, and simultaneous surgery on articular cartilage or the anterior cruciate ligament...
June 10, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27293292/glenohumeral-kinematics-after-soft-tissue-interposition-graft-and-glenoid-reaming-a-cadaveric-study
#19
Nickolas G Garbis, Alexander E Weber, Elizabeth F Shewman, Brian J Cole, Anthony A Romeo, Nikhil N Verma
BACKGROUND: The management of young patients with glenohumeral arthritis is controversial. Resurfacing of the glenoid with biologic interposition and reaming of the glenoid have been suggested as potential treatment options. The goal of this study was to determine the change in glenohumeral contact pressures in interposition arthroplasty, as well as glenoid reaming in an arthritis model. We hypothesized that interposition with meniscal allograft will lead to the best normalization of contact pressure throughout the glenohumeral range of motion...
May 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27279506/comparison-of-medial-versus-lateral-meniscus-allograft-transplantation-literature-review-and-meta-analysis
#20
Guo Wei, Jie Liang, Neng Ru, Yu-Peng Li, Zheng-Hui Shang, Jian-Feng Chen
OBJECTIVES: To perform a literature review and meta-analysis evaluating the effectiveness of medial and lateral meniscus allograft transplantation (MAT). METHODS: The literature review and meta-analysis were conducted between August and October 2015 in the People's Hospital of China Three Gorges University, Yi Chang, China. A systematic search was performed in the Medline and EMBASE databases, and the Cochrane Library for relevant literature published through October 2015...
June 2016: Saudi Medical Journal
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