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Allograft ligament

Raffy Mirzayan, Michael J Lim
BACKGROUND: Osteochondritis dissecans (OCD) of the capitellum is a rare yet debilitating injury seen in young athletes. This is the first report in the literature describing fresh osteochondral allograft transplantation (FOCAT) to treat OCD of the capitellum. METHODS: Nine male baseball players (mean age, 15.3; range, 14-18 years), with OCD of the capitellum were treated with FOCAT. There were 6 pitchers and 3 position players. A ligament-sparing, mini-open approach was used...
November 2016: Journal of Shoulder and Elbow Surgery
Mohammad A Yabroudi, Haukur Björnsson, Andrew D Lynch, Bart Muller, Kristian Samuelsson, Majd Tarabichi, Jón Karlsson, Freddie H Fu, Christopher D Harner, James J Irrgang
BACKGROUND: Revision anterior cruciate ligament (ACL) reconstruction surgery occurs in 5% to 15% of individuals undergoing ACL reconstruction. Identifying predictors for revision ACL surgery is of essence in the pursuit of creating adequate prevention programs and to identify individuals at risk for reinjury and revision. PURPOSE: To determine predictors of revision ACL surgery after failed primary ACL reconstruction. STUDY DESIGN: Case-control study; Level of evidence, 3...
September 2016: Orthopaedic Journal of Sports Medicine
Justin J Mitchell, Chase S Dean, Jorge Chahla, Gilbert Moatshe, Tyler R Cram, Robert F LaPrade
Valgus knee alignment in excess of physiological valgus leads to excessive loading of the lateral compartment, which can potentially increase the risk of osteoarthritis and can place the medial knee structures at risk of chronic attenuation. Varus-producing distal femoral osteotomies have been proposed for correction of valgus malalignment, to relieve tension on medial-sided structures, as well as to off-load the lateral compartment. Understanding that symptomatic valgus deformity of the knee represents a complex problem that is magnified in the setting of lateral compartment arthritis or medial ligamentous incompetence, we present our preferred technique for a varus-producing distal femoral osteotomy using plate osteosynthesis and cancellous bone allograft...
August 2016: Arthroscopy Techniques
Christopher M Aguila, Gaëtan J-R Delcroix, David N Kaimrajh, Edward L Milne, H Thomas Temple, Loren L Latta
PURPOSE: This study was designed to investigate the biomechanical properties of nonirradiated (NI) and irradiated (IR) peroneus tendons to determine if they would be suitable allografts, in regards to biomechanical properties, for anterior cruciate ligament reconstruction after a dose of 1.5-2.5 Mrad. METHODS: Seven pairs of peroneus longus (PL) and ten pairs of peroneus brevis (PB) tendons were procured from human cadavers. The diameter of each allograft was measured...
2016: Open Access Journal of Sports Medicine
J H Noh, H S Kyiung, K H Yoon, Y H Roh
We compare clinical outcomes of two different supplementary tibial fixation in anterior cruciate ligament (ACL) reconstruction using free tendon Achilles allograft. Eighty subjects underwent ACL reconstruction using Endobutton CL for femoral fixation and Bio-interference screw for tibial fixation. Supplementary tibial fixation was performed as direct -cortical fixation using spiked washer screw (group I) or as post-tie using washer screw (group II). -Lachman test, pivot shift test, IKDC classification, Lysholm score, and side-to-side difference (SSD) were evaluated...
August 2016: Acta Orthopaedica Belgica
Shun-Li Kan, Zhi-Fang Yuan, Guang-Zhi Ning, Bo Yang, Hai-Liang Li, Jing-Cheng Sun, Shi-Qing Feng
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction is considered as the standard surgical procedure for the treatment of ACL tear. However, there is a crucial controversy in terms of whether to use autograft or allograft in ACL reconstruction. The purpose of this meta-analysis is to compare autograft with allograft for patients undergoing ACL reconstruction. METHODS: PubMed, EMBASE, and the Cochrane Library were searched for randomized controlled trials that compared autograft with allograft in ACL reconstruction up to January 31, 2016...
September 2016: Medicine (Baltimore)
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
Peter D Fabricant
No abstract text is available yet for this article.
September 14, 2016: Clinical Orthopaedics and related Research
Roberto Negrín, Jaime Duboy, Fernando Olavarría, Mauricio Wainer, Horacio Jimenez, Facundo Las Heras, Nicolas Reyes, Hugo Godoy
BACKGROUND: Medial patellofemoral ligament (MPFL) is the main restrictor of lateral shifting of the patella, contributing by 60 % in the first 20° flexion of the knee. MPFL reconstruction has been performed in order to restore the stability of the patella with good results.Lyophilized Gracilis tendon allograft (LGA) compared to Cryopreserved Gracilis tendon allograft (CGA) has a lower cost, does not require to maintain cooling chain or preparation. The purpose of this study is to compare the histological and biomechanical characteristics of an experimental model of reconstruction of the MPFL in porcine patellas with LGA versus CGA...
December 2016: Journal of Experimental Orthopaedics
Eric Hohn, Nirav K Pandya
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction is one of several surgical procedures used to treat patellofemoral instability. Use of allograft tissue can preserve autogenous tissue and may be preferable in patients with connective tissue disorders or ligamentous laxity. Although there are successful reports in adults, it is unclear if the use of allograft tissue in MPFL reconstruction can restore patellofemoral stability in children and adolescents. QUESTIONS/PURPOSES: (1) Does allograft tissue in MPFL reconstruction in pediatric and adolescent patients restore patellar stability? (2) What complications were associated with allograft MPFL reconstructions in children and adolescents? METHODS: Between June 2012 and August 2015, one surgeon (NKP) performed 26 MPFL reconstructions in 23 patients with gracilis allograft for traumatic patellar instability...
September 2, 2016: Clinical Orthopaedics and related Research
Brian Forsythe, Marc S Haro, Ljiljana Bogunovic, Michael J Collins, Thomas A Arns, Katie J Trella, Elizabeth F Shewman, Nikhil N Verma, Bernard R Bach
BACKGROUND: Long-term studies of posterior cruciate ligament (PCL) reconstruction suggest that normal stability is not restored in the majority of patients. The Achilles tendon allograft is frequently utilized, although recently, the quadriceps tendon has been introduced as an alternative option due to its size and high patellar bone density. PURPOSE/HYPOTHESIS: The purpose of this study was to compare the biomechanical strength of PCL reconstructions using a quadriceps versus an Achilles allograft...
August 2016: Orthopaedic Journal of Sports Medicine
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...
August 25, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
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
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
Shaoqi Tian, Bin Wang, Lun Liu, Yuanhe Wang, Chengzhi Ha, Qicai Li, Xu Yang, Kang Sun
BACKGROUND: Most studies on grafts for anterior cruciate ligament (ACL) reconstruction (ACLR) have been of autografts or nonirradiated allografts with a single-bundle (SB) technique. Outcome reports evaluating anatomic double-bundle (DB) ACLR with a hamstring tendon autograft versus irradiated allograft are rare. PURPOSE: To compare the clinical outcomes of arthroscopic anatomic DB ACLR with a hamstring tendon autograft versus irradiated allograft. STUDY DESIGN: Randomized controlled trial; Level of evidence, 2...
October 2016: American Journal of Sports Medicine
Bum-Sik Lee, Seong-Il Bin, Jong-Min Kim, Won-Kyeong Kim, Jae Hyan Kim
BACKGROUND: Little is known about clinical outcomes after revision meniscal allograft transplantation (RMAT), and there are no studies on magnetic resonance imaging (MRI) evaluations during the early remodeling period. HYPOTHESIS: The objective imaging results, as determined by MRI evaluation, would be inferior to those of published data on primary meniscal allograft transplantations (MATs), although short-term clinical improvement would be achieved after RMAT. STUDY DESIGN: Case series; Level of evidence, 4...
July 25, 2016: American Journal of Sports Medicine
Xiaozuo Zheng, Tong Li, Juan Wang, Jiangtao Dong, Shijun Gao
BACKGROUND: The medial collateral ligament (MCL) is the main static stabilizer of the medial knee. The surgical treatment was recommended in cases with serious medial collateral ligament insufficiency combined with multi-ligament injuries and chronic symptomatic medial instability. Several surgical techniques have been described for the MCL reconstruction, while potential problems including donor site morbidity, complicated procedure, and high risk of femoral tunnel collision were reported...
2016: Journal of Orthopaedic Surgery and Research
T Schmidt, D Grabau, J H Grotewohl, U Gohs, A Pruß, M Smith, S Scheffler, A Hoburg
PURPOSE: Allografts are frequently used for anterior cruciate ligament (ACL) reconstruction. However, due to the inherent risk of infection, a method that achieves complete sterilization of grafts is warranted without impairing their biomechanical properties. Fractionation of electron beam (FEbeam) irradiation has been shown to maintain similar biomechanical properties compared to fresh-frozen allografts (FFA) in vitro. Therefore, aim of this study was to evaluate the biomechanical properties and early remodelling of grafts that were sterilized with fractionated high-dose electron beam irradiation in an in vivo sheep model...
July 20, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Lisa Tibor, Priscilla H Chan, Tadashi T Funahashi, Ronald Wyatt, Gregory B Maletis, Maria C S Inacio
BACKGROUND: The surgical technique for anterior cruciate ligament (ACL) reconstruction has evolved as a result of improved understanding of ligament biomechanics, anatomy, device development, and failed reconstructions. Studies on surgical technique preferences have been limited to surgeon surveys, which are subject to selection and recall bias. The purpose of this study was to evaluate ACL reconstruction surgical technique and yearly revision rate trends in a community-based setting...
July 6, 2016: Journal of Bone and Joint Surgery. American Volume
Kyungmi Park, Christopher M Powers
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
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