Read by QxMD icon Read

meniscal repair

Elizabeth M Meier, Bin Wu, Aamir Siddiqui, Donna G Tepper, Michael T Longaker, Mai T Lam
: Efforts have been made to engineer knee meniscus tissue for injury repair, yet most attempts have been unsuccessful. Creating a cell source that resembles the complex, heterogeneous phenotype of the meniscus cell remains difficult. Stem cell differentiation has been investigated, mainly using bone marrow mesenchymal cells and biochemical means for differentiation, resulting in no solution. Mechanical stimulation has been investigated to an extent with no conclusion. Here, we explore the potential for and effectiveness of mechanical stimulation to induce the meniscal phenotype in adipose-derived stromal cells...
September 2016: Plastic and Reconstructive Surgery. Global Open
Andrew R Palisch, Ronald R Winters, Marc H Willis, Collin D Bray, Theodore B Shybut
The menisci play an important biomechanical role in axial load distribution of the knees by means of hoop strength, which is contingent on intact circumferentially oriented collagen fibers and meniscal root attachments. Disruption of the meniscal root attachments leads to altered biomechanics, resulting in progressive cartilage loss, osteoarthritis, and subchondral edema, with the potential for development of a subchondral insufficiency fracture. Identification of meniscal root tears at magnetic resonance (MR) imaging is crucial because new arthroscopic surgical techniques (transtibial pullout repair) have been developed to repair meniscal root tears and preserve the tibiofemoral cartilage of the knee...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Piya-On Numpaisal, Benjamin B Rothrauff, Riccardo Gottardi, Chung-Liang Chien, Rocky S Tuan
PURPOSE: Treatment of meniscus tears is a persistent challenge in orthopaedics. Although cell therapies have shown promise in promoting fibrocartilage formation in in vitro and preclinical studies, clinical application has been limited by the paucity of autologous tissue and the need for ex vivo cell expansion. Rapid dissociation of the free edges of the anterior and posterior meniscus with subsequent implantation in a meniscus lesion may overcome these limitations. The purpose of this study was to explore the effect of rapidly dissociated meniscus tissue in enhancing neotissue formation in a radial meniscus tear, as simulated in an in vitro explant model...
October 11, 2016: Connective Tissue Research
Marco Nitri, Jorge Chahla, David Civitarese, Sanjeev Bhatia, Samuel G Moulton, Christopher M LaPrade, Robert F LaPrade
Complete radial tears of the medial meniscus significantly decrease the meniscal tissue's ability to dissipate tibiofemoral loads and have been described as functionally similar to a total meniscectomy, predisposing patients to early osteoarthritis. At present, no consensus exists regarding the optimal surgical treatment of a radial meniscal tear. Current repair techniques have led to a reportedly high rate of incomplete healing or healing of the meniscus in a nonanatomic, gapped position, which compromises its ability to withstand hoop stresses...
August 2016: Arthroscopy Techniques
Ayoosh Pareek, Michael P O'Malley, Bruce A Levy, Michael J Stuart, Aaron J Krych
Understanding of meniscal function through basic science, natural history, and biomechanics has highlighted the importance of preserving the meniscus to maintain normal knee biomechanics. Tears that may alter these biomechanics can contribute to the progressive nature of degenerative joint disease in the knee. Radial tears result in the disruption of the circumferential fibers causing inability of the native meniscus to resist normal hoop stresses, thereby leading to increased focal areas of pressure that cause complications such as early onset arthrosis...
August 2016: Arthroscopy Techniques
Pinkawas Kongmalai, Bancha Chernchujit
A posterior horn of medial meniscal peripheral capsular is usually associated with the anterior cruciate ligament injury. The conventional repair technique with the camera in the anterolateral portal cannot precisely restore the slope capsular synovium to the original attachment point. We present the arthroscopic technique for improving the accuracy and quality of the repair by working in the posterior compartment. When the posterolateral portal is used as the viewing portal, the accuracy of repair is improved because we can assess the full extent of the lesion and lift the sagging peripheral tissue to the more central part...
August 2016: Arthroscopy Techniques
Tetsuo Hagino, Satoshi Ochiai, Shinya Senga, Takashi Yamashita, Masanori Wako, Takashi Ando, Hirotaka Haro
PURPOSE: To study discoid meniscus in children who underwent arthroscopic surgery at our center. SUBJECTS AND METHODS: Thirty-four patients (39 knees) younger than 15 years with discoid lateral meniscus (mean age, 12.9 years; 13 males, 21 females) who underwent arthroscopic surgeries since 2007 were studied. The surgical procedure consisted of, in principle, saucerization with additional suture repair in the case of meniscal instability at the peripheral rim of the residual meniscus...
October 1, 2016: Archives of Orthopaedic and Trauma Surgery
N Jan, B Sonnery-Cottet, J-M Fayard, C Kajetanek, M Thaunat
INTRODUCTION: All-inside posteromedial suture for lesions of the posterior horn of the medial meniscus in anterior cruciate ligament (ACL) repair provides effective freshening and good healing. HYPOTHESIS: The posteromedial portal provides satisfactory healing rates without increasing morbidity or complications rates. MATERIAL AND METHODS: Intra- and postoperative complications were collected for a consecutive single-center series of 132 patients undergoing posteromedial hook suture of the medial meniscus in ACL repair...
September 26, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
Laura W Gamer, Lin Xiang, Vicki Rosen
Meniscal injuries are commonplace, but current surgical repair procedures do not prevent degenerative joint changes that occur after meniscal injury and often lead to osteoarthritis. Successful tissue regeneration in adults often recapitulates events that occur during embryogenesis, suggesting that understanding the regulatory pathways controlling these early processes may provide clues for developing strategies for tissue repair. While the mouse is now widely used to study joint diseases, detailed knowledge of the basic biology of murine meniscus is not readily available...
September 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Lucian C Warth, Matthew J Bollier, Douglas F Hoffman, Justin S Cummins, Mederic M Hall
BACKGROUND: The importance of meniscal preservation has become widely accepted, and meniscal repair techniques have evolved over recent years. With new techniques come new complications, which are critical to recognize. PURPOSE: To describe a new complication of foreign body reaction from a nonabsorbable suture anchor associated with improper placement of the all-inside meniscal device. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: This study was a retrospective review of 3 patients who developed pain associated with a foreign body reaction from a misplaced all-inside meniscal device...
September 2016: Orthopaedic Journal of Sports Medicine
Benjamin B Rothrauff, Piya-On Numpaisal, Brian B Lauro, Peter G Alexander, Richard E Debski, Volker Musahl, Rocky S Tuan
BACKGROUND: Large radial tears that disrupt the circumferential fibers of the meniscus are associated with reduced meniscal function and increased risk of joint degeneration. Electrospun fibrous scaffolds can mimic the topography and mechanics of fibrocartilaginous tissues and simultaneously serve as carriers of cells and growth factors, yet their incorporation into clinically relevant suture repair techniques for radial meniscus tears is unexplored. The purposes of this study were to (1) evaluate the effect of fiber orientation on the tensile properties and suture-retention strength of multilayered electrospun scaffolds and (2) determine the mechanical effects of scaffold inclusion within a surgical repair of a simulated radial meniscal tear...
December 2016: Journal of Experimental Orthopaedics
Marshall A Kuremsky, Nahir Habet, Richard D Peindl, R Glenn Gaston
PURPOSE: To quantify the distance of the dorsal ulnar sensory branch, floor of the extensor carpi ulnaris (ECU) subsheath, and ulnar neurovascular bundles from the triangular fibrocartilage complex (TFCC), and secondarily to assess the safety of an all-inside arthroscopic repair of the TFCC with a commonly used meniscal repair device with respect to the aforementioned structures. METHODS: A custom K-wire with 1-mm gradation was used to determine the distance of at-risk structures from the periphery of the TFCC in 13 above-elbow human cadaver specimens...
September 7, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Y Kodama, T Furumatsu, M Fujii, T Tanaka, S Miyazawa, T Ozaki
A medial meniscus posterior root tear (MMPRT) may increase the tibiofemoral contact pressure by decreasing the tibiofemoral contact area. Meniscal dysfunction induced by posterior root injury may lead to the development of osteoarthritic knees. Repair of a MMPRT can restore medial meniscus (MM) function and prevent knee osteoarthritis progression. Several surgical procedures have been reported for treating a MMPRT. However, these procedures are associated with several technical difficulties. Here, we describe a technique to stabilize a torn MM posterior root using the FasT-Fix(®) all-inside meniscal suture device and a new aiming device...
August 23, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
Gregory L Cvetanovich, Jonathan C Riboh, Annemarie K Tilton, Brian J Cole
BACKGROUND: Existing studies of autologous chondrocyte implantation (ACI) in adolescent patients have primarily reported outcomes that have not been validated for cartilage repair and have failed to include measures of general health or health-related quality of life. PURPOSE: This study assesses validated knee-specific functional outcomes and health-related quality of life after ACI in adolescent patients. STUDY DESIGN: Case series; Level of evidence, 4...
August 26, 2016: American Journal of Sports Medicine
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
Ido Stahl, Jackob Shapira, Bezalel Peskin, Nir Hous, Doron Norman, Mazen Falah
The meniscus has an important biomechanical role in the normal function of the knee including load bearing, shock absorption and joint stability. Tears of the meniscus are one of the common sports injuries. The knowledge that total meniscectomy causes early development of degenerative changes has raised the prevalence of meniscal tear repair in order to preserve as much as possible of the meniscal tissue. The type of tear (degenerative of traumatic), shape and location have a critical effect on healing ability after suture of the tear and thus will determine the treatment plan...
May 2016: Harefuah
W Michael Pullen, Brandon Bryant, Trevor Gaskill, Nicholas Sicignano, Amber M Evans, Marlene DeMaio
BACKGROUND: Arthroscopically assisted anterior cruciate ligament (ACL) reconstruction is a common orthopaedic procedure. Graft failure after reconstruction remains a devastating complication, often requiring revision surgery and less aggressive or modified rehabilitation. Worse functional and patient-reported outcomes are reported compared with primary reconstruction. Moreover, both rates and risk factors for revision are variable and inconsistent within the literature. PURPOSE: To determine the rate of revision surgery after ACL reconstruction in a large cohort of patients, to assess the influence of patient characteristics on the odds of revision, and to compare revision rates between active-duty military members and non-active-duty beneficiaries...
August 12, 2016: American Journal of Sports Medicine
Jorge Chahla, Chase S Dean, Gilbert Moatshe, Justin J Mitchell, Tyler R Cram, Carlos Yacuzzi, Robert F LaPrade
Meniscal ramp lesions are more frequently associated with anterior cruciate ligament (ACL) injuries than previously recognized. Some authors suggest that this entity results from disruption of the meniscotibial ligaments of the posterior horn of the medial meniscus, whereas others support the idea that it is created by a tear of the peripheral attachment of the posterior horn of the medial meniscus. Magnetic resonance imaging (MRI) scans have been reported to have a low sensitivity, and consequently, ramp lesions often go undiagnosed...
July 2016: Orthopaedic Journal of Sports Medicine
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
Todd P Pierce, Casey Wagner, Vincent K McInerney, Anthony Festa, Anthony J Scillia
Tears of the meniscal capsular junction present unique diagnostic and treatment challenges for practitioners because they are rich in blood supply yet often not visualized on magnetic resonance imaging. The authors report the case of a young man with a meniscal capsular junction tear, difficulties related to his diagnosis, and his short-term outcomes following surgical treatment. An 18-year-old male cross-country runner presented to the authors for nonradiating lateral right knee pain after a failed course of physical therapy...
July 19, 2016: Orthopedics
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"