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Allograft ligament

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https://www.readbyqxmd.com/read/28028569/functional-testing-and-return-to-sport-following-stabilization-surgery-for-recurrent-lateral-patellar-instability-in-competitive-athletes
#1
Aaron J Krych, Michael P O'Malley, Nick R Johnson, Rohith Mohan, Timothy E Hewett, Michael J Stuart, Diane L Dahm
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction and tibial tubercle osteotomy are commonly used to treat recurrent lateral patellar instability, yet there are limited available data on return to sport (RTS) following these procedures. The purpose of this study is to evaluate patient factors associated with excellent functional outcomes, including successful RTS, following surgical stabilization including MPFL reconstruction in competitive athletes with recurrent lateral patellar instability...
December 27, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28024306/a-canine-arthroscopic-anterior-cruciate-ligament-reconstruction-model-for-study-of-synthetic-augmentation-of-tendon-allografts
#2
James L Cook, Pat Smith, James P Stannard, Ferris Pfeiffer, Keiichi Kuroki, Chantelle C Bozynski, Cristi Cook
Novel graft types, fixation methods, and means for augmenting anterior cruciate ligament (ACL) reconstructions require preclinical validation prior to safe and effective clinical application. The objective of this study was to describe and validate a translational canine model for all-inside arthroscopic complete ACL reconstruction using a quadriceps tendon allograft with internal brace (QTIB). With institutional approval, adult research hounds underwent complete transection of the native ACL followed by all-inside ACL reconstruction using the novel QTIB construct with suspensory fixation (n = 10)...
December 26, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28018069/bilateral-sequential-knee-dislocation-in-a-patient-with-connective-tissue-disorder-report-of-an-unusual-case-and-lessons-learnt
#3
Waheeb Al-Azzani, Konrad Wronka, James Lewis, Adel Ghandour, Angus Robertson
Tibiofemoral knee dislocation is a rare but serious limb-threatening injury. Without prompt recognition and management, amputation or long-term functional impairment may result. The authors present a case of bilateral sequential knee dislocation, secondary to low-energy trauma, in a patient with Systemic Lupus Erythematosus and antiphospholipid syndrome. Adequate stability was achieved on both occasions by reconstruction of the postero-lateral corner and MCL. During the first reconstruction, ipsi-lateral autograft, as well as hamstring tendons from the contra-lateral side, were used to strengthen the graft...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28005400/does-allograft-augmentation-of-small-diameter-hamstring-autograft-acl-grafts-reduce-the-incidence-of-graft-retear
#4
Andrew T Pennock, Brian Ho, Kristina Parvanta, Eric W Edmonds, Henry G Chambers, Joanna H Roocroft, Tracey P Bastrom
BACKGROUND: Small-diameter hamstring tendons are frequently encountered during anterior cruciate ligament (ACL) reconstructions in patients with short stature or those who are skeletally immature. The role of augmenting these small-diameter autografts with allograft is unclear. PURPOSE: To assess clinical outcomes and failure rates in adolescent patients with small hamstring tendon autografts (<7 mm) that were either augmented with soft tissue allograft or accepted "as is" and not augmented...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28005102/tibial-tubercle-fracture-after-bone-patellar-tendon-bone-autograft
#5
Matthew J Brown, Leslie J Bisson, Mark J Anders
Fractures occurring with anterior cruciate ligament (ACL) reconstruction are rare and those that do occur take place on the patellar side of a bone-patellar tendon-bone (BPTB) autograft. Here we discuss a far more infrequent occurrence, fracture of the tibial tubercle aspect of the BPTB autograft. This fracture type occurs even more infrequently than tibial plateau fractures after ACL reconstruction based on the published literature. In this article we discuss the third published episode of a tibial tubercle fracture after BPTB allograft...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28005098/allografts-for-ligament-reconstruction-where-are-we-now
#6
Frank B Wydra, Philip J York, Christopher R Johnson, Lorenzo Silvestri
The use of musculoskeletal allografts by orthopedic surgeons continues to rise. The process of procuring and sterilizing allografts is evolving with much consideration to limiting the spread of infectious diseases and preserving tissue integrity. Research involving the application of allografts, particularly for ligament repair, is quite active, necessitating an update for the practicing orthopedist. Avoiding donor site morbidities is one of the most commonly cited advantages of allografts over autografts. There is controversy amongst studies for allografts in terms of their biological incorporation and clinical outcomes compared to autografts...
November 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27999505/osteochondral-allograft-transplantation-for-femoral-trochlear-dysplasia
#7
Dharmpal V Vansadia, James R Heltsley, Scott Montgomery, Misty Suri, Deryk G Jones
BACKGROUND: The risk factors for patellofemoral joint instability include laxity of medial patellar restraints, abnormal limb geometry, femoral and tibial malrotation, patella alta, and trochlear dysplasia. Femoral trochlear dysplasia is characterized by a hypoplastic or shallow trochlear groove. CASE REPORT: We report the case of a 31-year-old female with trochlear dysplasia and recurrent patella dislocations, laxity of the medial patellofemoral ligament (MPFL), and high-grade chondromalacia of the trochlea and the patella...
2016: Ochsner Journal
https://www.readbyqxmd.com/read/27896290/do-clinical-results-and-return-to-sport-rates-after-ulnar-collateral-ligament-reconstruction-differ-based-on-graft-choice-and-surgical-technique
#8
Brandon J Erickson, Gregory L Cvetanovich, Rachel M Frank, Bernard R Bach, Mark S Cohen, Charles A Bush-Joseph, Brian J Cole, Anthony A Romeo
BACKGROUND: Ulnar collateral ligament reconstruction (UCLR) has become a common procedure performed in overhead-throwing athletes of many athletic levels. PURPOSE/HYPOTHESIS: The purpose of this study was to determine whether clinical outcomes and return-to-sport (RTS) rates differ among patients undergoing UCLR based on graft choice, surgical technique, athletic competition level, handedness, and treatment of the ulnar nerve. We hypothesized that no differences would exist in clinical outcomes or RTS rates between technique, graft choice, or other variables...
November 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27894180/causes-of-failure-of-anterior-cruciate-ligament-reconstruction-and-revision-surgical-strategies
#9
Paolo Di Benedetto, Enrico Di Benedetto, Andrea Fiocchi, Alessandro Beltrame, Araldo Causero
Purpose: Long-term outcomes of anterior cruciate ligament (ACL) reconstruction are good or excellent; however, 0.7%-20% of patients suffer from recurrent instability due to graft failure. The purpose of this paper was to analyse failure aetiology and the possibilities of revision surgical strategies, with a description of our experience. We obtained optimal and good results in most of our patients. Materials and Methods: We retrospectively reviewed 42 patients who underwent revision surgery (43 revisions) due to relapsing instability after ACL reconstruction between 2006 and 2015...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27876265/a-prospective-randomized-comparison-of-two-distinct-allogenic-tissue-constructs-for-anterior-cruciate-ligament-reconstruction
#10
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/27871659/graft-selection-in-anterior-cruciate-ligament-surgery-who-gets-what-and-why
#11
REVIEW
Kyle R Duchman, T Sean Lynch, Kurt P Spindler
Anterior cruciate ligament (ACL) injuries are common and affect a young, active patient population. Despite much research, ACL reconstruction graft choice remains a topic of debate. Based on the best available evidence, autograft seems to be superior to allograft for ACL reconstruction in young, active patients. Future high-level studies are required in order to better define the role of allograft in ACL reconstruction. As graft choice is often influenced by surgeon preference, it is important that surgeons understand the current literature as well as the goals of their patients...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27866794/treatment-of-symptomatic-acromioclavicular-joint-instability-by-a-docking-technique-clinical-indications-surgical-technique-and-outcomes
#12
W Ben Kibler, Aaron D Sciascia, Brent J Morris, David C Dome
PURPOSE: To report functional and objective outcomes resulting from surgical treatment of patients with symptomatic type III through V acromioclavicular (AC) joint injury by use of a modification of the anatomic AC joint reconstruction developed by Carofino and Mazzocca. METHODS: The study included all patients treated in 2009-2014 who presented with a history of direct trauma to the shoulder; deformity of the AC joint on clinical examination; radiographic findings that would classify the injury as a Rockwood type III, IV, or V injury; AC joint instability on clinical examination; and self-reported deficits of arm function on initial presentation, in whom a comprehensive and directed nonoperative program failed...
November 17, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27828983/sacrotuberous-ligament-healing-following-surgical-division-during-transgluteal-pudendal-nerve-decompression-a-3-tesla-mr-neurography-study
#13
Jan Fritz, Benjamin Fritz, A Lee Dellon
Pelvic pain due to chronic pudendal nerve (PN) compression, when treated surgically, is approached with a transgluteal division of the sacrotuberous ligament (STL). Controversy exists as to whether the STL heals spontaneously or requires grafting. Therefore, the aim of this study was to determine how surgically divided and unrepaired STL heal. A retrospective evaluation of 10 patients who had high spatial resolution 3-Tesla magnetic resonance imaging (3T MRI) exams of the pelvis was done using an IRB-approved protocol...
2016: PloS One
https://www.readbyqxmd.com/read/27816100/editorial-commentary-the-jury-remains-out-on-hybrid-autograft-plus-allograft-for-diminutive-hamstring-anterior-cruciate-ligament-autografts
#14
EDITORIAL
Aman Dhawan
In a Level III, single center, retrospective, nonrandomized observational study, anterior cruciate ligament reconstruction revision rates and patient-reported outcomes were found to be similar at 2-year follow-up when using autograft hamstrings versus a hybrid graft (autograft and nonirradiated allograft), with both groups reporting low levels of revisions and excellent outcomes. Despite previous published data that were cause for concern, a study in this issue provides support for use of a hybrid graft technique when encountering the challenging situation of a diminutive hamstring autograft when performing anterior cruciate ligament reconstruction...
November 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27803939/mechanoreceptor-reinnervation-of-autografts-versus-allografts-after-anterior-cruciate-ligament-reconstruction
#15
Simon W Young, Roberto D Valladares, Florence Loi, Jason L Dragoo
BACKGROUND: Loss of proprioceptive function occurs after anterior cruciate ligament (ACL) rupture. Clinical, motor, and proprioceptive function is known to improve after ACL reconstruction but does not return to normal. While histological studies of human ACL allografts have been unable to demonstrate mechanoreceptor reinnervation, animal data suggest that reinnervation may occur when an autograft is used. PURPOSE: To compare the presence or absence of mechanoreceptors between allograft versus autograft after ACL reconstruction in humans...
October 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27802924/improved-acl-reconstruction-outcome-using-double-layer-bptb-allograft-compared-to-that-using-four-strand-hamstring-tendon-allograft
#16
Yingzhen Niu, Chao Niu, Xiaomeng Wang, Junhang Liu, Pengkai Cao, Fei Wang, Jinghui Niu
BACKGROUND: This study compared the clinical outcomes of anterior cruciate ligament reconstruction using double-layer bone-patellar tendon-bone (DBPTB) allografts and four-strand hamstring (4SHS) grafts. METHODS: This prospective randomized controlled trial included 101 patients. Of these, 50 patients received DBPTB allografts, and 51 received 4SHS grafts. Evaluations included KT-1000 arthrometer measurements, Lachman tests, pivot-shift tests, the International Knee Documentation Committee (IKDC) classification and Lysholm scores at three year postoperative follow-up...
December 2016: Knee
https://www.readbyqxmd.com/read/27787809/computational-model-based-probabilistic-analysis-of-in-vivo-material-properties-for-ligament-stiffness-using-the-laxity-test-and-computed-tomography
#17
Kyoung-Tak Kang, Sung-Hwan Kim, Juhyun Son, Young Han Lee, Heoung-Jae Chun
The objective of this paper was to evaluate in vivo material properties in order to address technical aspects of computational modeling of ligaments in the tibiofemoral joint using a probabilistic method. The laxity test was applied to the anterior-posterior drawer under 30° and 90° of flexion with a series of stress radiographs, a Telos device, and computed tomography. Ligament stiffness was investigated using sensitivity analysis based on the Monte-Carlo method with a subject-specific finite element model generated from in vivo computed tomography and magnetic resonance imaging data, subjected to laxity test conditions...
December 2016: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27742247/fresh-osteochondral-allograft-transplantation-for-osteochondritis-dissecans-of-the-capitellum-in-baseball-players
#18
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
https://www.readbyqxmd.com/read/27734019/predictors-of-revision-surgery-after-primary-anterior-cruciate-ligament-reconstruction
#19
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
https://www.readbyqxmd.com/read/27709040/varus-producing-lateral-distal-femoral-opening-wedge-osteotomy
#20
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
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