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Meniscus allograft

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https://www.readbyqxmd.com/read/29770332/incidence-and-extent-of-graft-extrusion-following-meniscus-allograft-transplantation
#1
REVIEW
Dae-Hee Lee
Background: The incidence and extent of graft extrusion after meniscus allograft transplantation (MAT) may differ in patients undergoing medial and lateral meniscus transplantation due to the use of different surgical techniques. This meta-analysis was therefore designed to quantify the extent and incidence of graft extrusion after meniscus allograft transplantation. Methods: Following preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines, all studies reporting absolute extrusion, relative percentage of extrusion (RPE), or frequency of major extrusions (>3 mm) on magnetic resonance imaging in patients undergoing medial or lateral MAT were included...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29741957/effects-of-proud-large-osteochondral-plugs-on-contact-forces-and-knee-kinematics-a-robotic-study
#2
Peter Z Du, Keith L Markolf, Daniel V Boguszewski, Kent T Yamaguchi, Christopher J Lama, David R McAllister, Kristofer J Jones
BACKGROUND: Osteochondral allograft (OCA) transplantation is used to treat large focal femoral condylar articular cartilage defects. A proud plug could affect graft survival by altering contact forces (CFs) and knee kinematics. HYPOTHESIS: A proud OCA plug will significantly increase CF and significantly alter knee kinematics throughout controlled knee flexion. STUDY DESIGN: Controlled laboratory study. METHODS: Human cadaver knees had miniature load cells, each with a 20-mm-diameter cylinder of native bone/cartilage attached at its exact anatomic position, installed in both femoral condyles at standardized locations representative of clinical defects...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29699841/lateral-meniscus-allograft-transplantation-with-platelet-rich-plasma-injections-a-minimum-two-year-follow-up-study
#3
Hua Zhang, Shiyang Chen, Man Qiu, Aiguo Zhou, Wenlong Yan, Jian Zhang
BACKGROUND: The aim of this study was to report the short-term clinical and imaging outcomes of lateral meniscus allograft transplantations (LMAT) combined with intra-articular platelet-rich plasma (PRP) injection. METHODS: Thirty-three patients who had undergone LMAT combined with intra-articular PRP injection were evaluated. The Lysholm, International Knee Documentation Committee (IKDC), Western Ontario and McMaster Universities Osteoarthritis Index, Tegner activity level scale and visual analog scale for pain scores were used to evaluate the outcomes...
April 24, 2018: Knee
https://www.readbyqxmd.com/read/29594507/graft-extrusion-after-medial-and-lateral-mat-differs-according-to-surgical-technique-a-meta-analysis
#4
Seong-Il Bin, Hyun-Jung Kim, Dae-Hee Lee
INTRODUCTION: It is unclear whether the incidence and amount of graft extrusion differ between knees undergoing medial and lateral meniscus allograft transplantation (MAT). This meta-analysis, therefore, compared the incidence and amount of transplanted meniscus allograft extrusion following medial and lateral MAT. MATERIALS AND METHODS: All studies comparing absolute or relative extrusions, or proportion of major extrusions (> 3 mm), on magnetic resonance imaging between medial and lateral MATs were included...
March 28, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29573933/capsulodesis-versus-bone-trough-technique-in-lateral-meniscal-allograft-transplantation-graft-extrusion-and-functional-results
#5
Angel Masferrer-Pino, Joan C Monllau, Maximiliano Ibáñez, Juan I Erquicia, Xavier Pelfort, Pablo E Gelber
PURPOSE: To compare the radiographic results (in terms of graft extrusion) and the functional results of lateral meniscus allograft transplantations (MAT) performed with a bony fixation technique or with a soft tissue fixation technique after capsulodesis. METHODS: A prospective series of 29 consecutive lateral MAT was analyzed. The inclusion criterion for MAT was lateral joint line pain due to a previous meniscectomy. Malalignment, patients who had an Ahlback grade greater than II, and patients with a body mass index over 30 were considered as the exclusion criterion to prevent confounding results...
March 21, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29556892/successful-anterior-cruciate-ligament-reconstruction-and-meniscal-repair-in-osteogenesis-imperfecta
#6
Jae-Young Park, Tae-Joon Cho, Myung Chul Lee, Hyuk-Soo Han
A case of anterior cruciate ligament (ACL) reconstruction with meniscal repair in an osteogenesis imperfecta patient is reported. A 24-year-old female with osteogenesis imperfecta type 1a suffered from a valgus extension injury resulting in tear of ACL and medial meniscus. She underwent an arthroscopic-assisted ACL reconstruction and medial meniscus repair. Meniscal tear at the menisco-capsular junction of the posterior horn of medial meniscus was repaired with three absorbable sutures via inside-out technique...
March 20, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29552463/bone-trough-lateral-meniscal-allograft-transplantation-the-tapered-teardrop-technique
#7
Michael A Zacchilli, Amos Z Dai, Eric J Strauss, Laith M Jazrawi, Robert J Meislin
The meniscus plays a vital role in knee biomechanics, and its physical absence or functional incompetence (e.g., irreparable root or radial tear) leads to unacceptably high rates of joint degeneration in affected populations. Meniscal allograft transplantation has been used successfully to treat patients with postmeniscectomy syndrome, and there is early laboratory and radiographic evidence hinting at a potential prophylactic role in preventing joint degeneration. We present a technique for lateral meniscal allograft transplantation using the CONMED Meniscal Allograft Transplantation system...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29528481/all-inside-anterior-cruciate-ligament-reconstruction-a-systematic-review-of-techniques-outcomes-and-complications
#8
Darren de Sa, Ajaykumar Shanmugaraj, Melissa Weidman, Devin C Peterson, Nicole Simunovic, Volker Musahl, Olufemi R Ayeni
The all-inside technique (AIT) for anterior cruciate ligament reconstruction (ACLR) is gaining popularity as a more anatomic, less invasive, technique with the potential for more rapid recovery. This systematic review aims to critically assess components of the technique, its safety profile, outcomes, and complications. PUBMED, EMBASE, and MEDLINE were searched for studies discussing primary ACLR using the AIT. Article screening, quality assessment, and data abstraction were completed in duplicate, and a minimal clinically important difference (MCID) was used to frame the descriptive results in a clinically significant context...
February 8, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29514370/contemporary-surgical-trends-in-the-management-of-symptomatic-meniscal-tears-among-united-states-military-servicemembers-from-2010-to-2015
#9
Timothy B Pekari, Kevin C Wang, Eric J Cotter, Nicholas Kusnezov, Brian R Waterman
The purpose of this investigation is to report on trends over time in the treatment of meniscal pathology among military orthopaedic surgeons, as well as to evaluate the impact of patient demographics and concomitant procedure on the type of meniscal procedure performed. We performed a retrospective analysis of all active-duty United States military servicemembers who underwent a meniscal procedure from 2010 to 2015 within the Military Health System. Patient demographics and surgical variables were extracted from the electronic medical record...
March 7, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29482862/meniscal-allograft-transplantation-the-effect-of-cartilage-status-on-survivorship-and-clinical-outcome
#10
Ahmed Mahmoud, James Young, Joanne Bullock-Saxton, Peter Myers
PURPOSE: To evaluate the survivorship of meniscal allograft transplantations (MATs), their clinical outcomes, and to compare the effect of perioperative cartilage status on survivorship. METHOD: A consecutive series of MATs with a minimum postsurgical time of 4 years were included from a prospectively collected database from 2001 to 2015. Mechanical failure was defined as transplant removal or knee arthroplasty. The effect of peri-operative cartilage status on survivorship was analyzed using a Kaplan-Meier analysis...
February 23, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29475414/stiffness-of-meniscus-tissue-depends-on-tibio-femoral-load-and-structural-integrity-of-the-meniscus-root
#11
Christian Stärke, Christoph Hubertus Lohmann, Sebastian Kopf
Development of meniscus replacements requires in-depth knowledge of the material properties and biomechanical behavior of the native meniscus. The compressive properties are of particular interest in this context, which are often assessed with indentation tests. However, those tests are usually done on isolated tissue specimens ex situ, which could have a significant impact on the results. It was, therefore, the goal of the study to assess the stiffness of the meniscus tissue in situ in porcine specimens and to compare it to that of artificial substitutes...
April 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29456708/meniscal-allograft-transplantation-using-a-novel-all-arthroscopic-technique-with-specifically-designed-instrumentation
#12
Ya-Dong Zhang, Shu-Xun Hou, Hong-Bin Zhong, Yi-Chao Zhang, Dian-Zhong Luo
The present study describes a novel all-arthroscopic technique for medial and lateral meniscal allograft transplantation (MAT). Surgical instruments were specifically designed to assist in the all-arthroscopic approach for MAT. The bone plug attachment technique, either the arthroscopic-assisted or all-arthroscopic approach, attaches bone plugs to the anterior and posterior horns. In the present study, two sets of surgical implements were designed: One to produce bone plugs of predefined sizes in the anterior and posterior horns of the allograft meniscus (bone plug implements) and a second to create bone tunnels in the receptor tibial plateau to hold the bone plugs (bone tunnel implements)...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29430389/arthroscopic-lateral-meniscal-allograft-transplantation-with-the-key-hole-technique
#13
Dhong Won Lee, Jung Ho Park, Kyu Sung Chung, Jeong Ku Ha, Jin Goo Kim
The efficacy of meniscus allograft transplantation (MAT) for the meniscus-deficient knee has been widely recognized as being excellent in terms of pain relief and functional improvement. Lateral MAT is usually performed with the bone bridge technique that uses a bone bridge connecting the anterior and posterior horns of an allograft. The slot position for the meniscal graft insertion is of great importance with the bone bridge technique, especially in the key-hole method. The purpose of this Technical Note is to describe lateral MAT using the key-hole technique in which an allograft with a bone bridge carved to accommodate the key-hole-shaped slot is properly secured to the slot...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29382216/preoperative-tibial-subchondral-bone-marrow-lesion-patterns-and-associations-with-outcomes-after-isolated-meniscus-allograft-transplantation
#14
Bryan M Saltzman, Eric J Cotter, Jeffrey P Stephens, Gregory L Cvetanovich, Brett Madden, Kevin Wang, Adam B Yanke, Brian J Cole
BACKGROUND: The association between preoperative tibial subchondral bone marrow lesion (BML) patterns and outcomes after isolated meniscus allograft transplantation (MAT) are unknown. PURPOSE: To determine (1) if a superior classification means exists (ie, high interrater reliability [IRR]) for grading tibial subchondral BML before isolated MAT and (2) whether quality and/or severity of preoperative tibial subchondral BML patterns was associated with clinical outcomes and/or failure rates after isolated MAT...
April 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29355742/intraarticular-synovial-sarcoma-of-the-knee-rising-from-a-lateral-meniscus-a-case-report
#15
M Bergovec, M Smerdelj, F Bacan, S Seiwerth, D Herceg, M Prutki
Synovial sarcoma (SS) is a rare mesenchymal tumor, accounting less than 10% of soft tissue sarcomas. We report a case of intraarticular SS mimicking nodular synovitis and lateral meniscus rupture. Due to clinical and radiological presentation, arthroscopic synovectomy was performed, and histology confirmed nodular synovitis. After four years the lesion recurred and new arthroscopic biopsy was performed, revealing a monophasic SS with SYT/SSX1 translocation. Repeated histology of the first specimen confirmed appearance of a nodular synovitis microscopically, with no morphological criteria for a sarcoma, but molecular analysis showed positive SYT/SSX1 translocation...
April 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29354476/meniscal-allograft-transplantation-with-concomitant-osteochondral-allograft-transplantation
#16
Eric J Cotter, Rachel M Frank, Brian R Waterman, Kevin C Wang, Michael L Redondo, Brian J Cole
Surgical strategies for knee joint preservation are numerous, with the procedure(s) of choice for a given patient dependent on the status of the articular cartilage, meniscus, overall alignment, and ligamentous stability. For patients with large, isolated, osteochondral defects of the articular cartilage of the femoral condyle, osteochondral allograft transplantation (OCA) is often performed in an effort to reduce pain and improve function. Similarly, for appropriately indicated patients with symptomatic meniscus deficiency, meniscus allograft transplantation (MAT) is an excellent surgical solution...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354454/arthroscopic-medial-meniscal-allograft-transplantation-with-modified-bone-plug-technique
#17
Dhong Won Lee, Jung Ho Park, Kyu Sung Chung, Jeong Ku Ha, Jin Goo Kim
The meniscal allograft transplantation (MAT) has been reported to be an effective treatment in terms of pain relief and functional improvement in symptomatic meniscus-deficient knee. The medial MAT is usually performed with the bone plug technique or soft tissue fixation for root fixation. We describe medial MAT with modified bone plug technique that permits easy passage of posterior bone plugs and facilitates bone-to-bone healing. With this method, an anterior bone plug with a long cylindrical shape is prepared, and the posterior bone plug is prepared with a flat bone shell containing a cancellous portion...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354420/lateral-meniscus-allograft-transplantation-the-bone-plug-technique
#18
Jarret M Woodmass, Nick R Johnson, Bruce A Levy, Michael J Stuart, Aaron J Krych
Lateral meniscus tears are commonly encountered by orthopaedic surgeons. Despite efforts to repair and preserve the meniscus, meniscectomy is occasionally required to treat irreparable tears. The resulting lateral meniscus deficiency leads to increased tibiofemoral contact pressures and ultimately early osteoarthritic changes in the knee. Lateral meniscal allograft transplant (LMAT) has been proposed as a way to restore the lateral meniscus-deficient knee to its native form. Although several techniques for LMAT have been proposed, osseous fixation has demonstrated increased stability, improved outcomes, and improved long-term survival...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29352626/differences-between-sexes-in-the-standard-and-advanced-dimensioning-of-lateral-meniscal-allografts
#19
Patrycja Mickiewicz, Michał Walczak, Michał Łaszczyca, Damian Kusz, Zygmunt Wróbel
BACKGROUND: There are many different methods of meniscal allograft measurements, which depend on individual tissue bank procedures. Due to the lack of a standardised method of dimensioning, measurement results may vary between individual cases. Consequently, allograft may be mismatched to the patient's knee anatomy. The purpose of this study was to measure four meniscal dimensions - two standard and two specific - and then compare them between sexes. METHODS: Fourteen cadaveric lateral menisci (seven male and seven female) were scanned using a microtomography scanner...
January 2018: Knee
https://www.readbyqxmd.com/read/29349008/meniscal-allograft-transplantation-made-simple-bridge-and-slot-technique
#20
Daniel J Kaplan, Sergio A Glait, William E Ryan, Michael J Alaia, Kirk A Campbell, Eric J Strauss, Laith M Jazrawi
Over recent years, appreciation for the critical role of the meniscus in joint biomechanics has led to an emphasis on meniscal preservation. Meniscal allograft transplant (MAT) is a promising biological solution for the symptomatic young patient with a meniscus-deficient knee that has not developed advanced osteoarthritis. As surgical techniques are refined and outcomes continue to improve, it is vital to consider the utility of such procedures and offer a straightforward approach to MAT. This article and accompanying video provide a step-by-step tutorial on how to perform a MAT using the bridge and slot technique, its key pearls and pitfalls as well as the relevant advantages and disadvantages of MAT...
December 2017: Arthroscopy Techniques
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