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CRUCIATE RECONSTRUCTION

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https://www.readbyqxmd.com/read/29055245/biomechanical-analysis-of-an-interference-screw-and-a-novel-twist-lock-screw-design-for-bone-graft-fixation
#1
S Asnis, J Mullen, P D Asnis, N Sgaglione, T LaPorta, D A Grande, N O Chahine
BACKGROUND: Malpositioning of an anterior cruciate ligament graft during reconstruction can occur during screw fixation. The purpose of this study is to compare the fixation biomechanics of a conventional interference screw with a novel Twist Lock Screw, a rectangular shaped locking screw that is designed to address limitations of graft positioning and tensioning. METHODS: Synthetic bone (10, 15, 20lb per cubic foot) were used simulating soft, moderate, and dense cancellous bone...
October 10, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29052744/tibiofemoral-joint-congruence-is-lower-in-females-with-acl-injuries-than-males-with-acl-injuries
#2
Antoine Schneider, Salim Si-Mohamed, Robert A Magnussen, Sebastien Lustig, Philippe Neyret, Elvire Servien
PURPOSE: Previous research has demonstrated that women have a higher risk of anterior cruciate ligament (ACL) injury than men. Tibiofemoral articular geometry may play a role in the occurrence of ACL tears. The purpose of this study was to analyze the gender-specific geometric characteristics differences in tibiofemoral morphology in ACL-deficient patients. METHODS: Medial tibial slope (MTS), lateral tibial slope (LTS), medial tibial plateau concavity, medial and lateral femoral condyle convexity, and lateral plateau convexity were analyzed in 276 patients with complete ACL injuries (138 females and 138 males)...
October 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29051899/surgical-treatment-of-segond-fractures-in-acute-anterior-cruciate-ligament-reconstruction
#3
Andrea Ferretti, Edoardo Monaco, Megan Rianne Wolf, Matteo Guzzini, Angelo De Carli, Daniele Mazza
BACKGROUND: The Segond fracture is an avulsion-type fracture located on the anterolateral aspect of the tibia associated with a ligament recently termed the anterolateral ligament. This injury has been described as pathognomonic for an anterior cruciate ligament (ACL) tear and is associated with a higher grade pivot shift. PURPOSE: To present and report 2-year clinical outcomes of a surgical technique for acute ACL reconstruction with fixation of a concomitant Segond fracture...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051896/outcomes-and-complication-rates-after-primary-anterior-cruciate-ligament-reconstruction-are-similar-in-younger-and-older-patients
#4
Mark E Cinque, Jorge Chahla, Gilbert Moatshe, Nicholas N DePhillipo, Nicholas I Kennedy, Jonathan A Godin, Robert F LaPrade
BACKGROUND: Until recently, anterior cruciate ligament (ACL) tears in older patients were treated conservatively; however, these patients often experienced significant pain and instability. PURPOSE/HYPOTHESIS: The purpose of this study was to compare the patient-reported outcomes, patient satisfaction, and failure rates of primary ACL reconstruction between a younger (age 20-30 years) and older (age 50-75 years) patient cohort. It was hypothesized that patients in the older cohort could achieve comparable clinical outcomes and retear rates following ACL reconstruction with a bone-tendon-bone autograft or allograft compared with the younger patients...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051869/case-of-acute-concomitant-rupture-of-anterior-cruciate-ligament-and-patellar-tendon-of-knee-surgical-decision-making-and-outcome
#5
Jithin Orville Lobo, Joe Joseph Cherian, Arnav Sahu
INTRODUCTION: Acute concomitant rupture of both anterior cruciate ligament (ACL) and patellar tendon is a rare injury. The diagnosis of either of the injuries may be missed on clinical examination in the emergency room. A high index of suspicion is necessary when active extension is absent, and necessary investigations like ultrasound or magnetic resonance imaging (MRI) should be done to confirm the diagnosis. There are no fixed treatment protocols in these injuries. The options include immediate repair of patellar tendon with either simultaneous or delayed reconstruction of ACL...
May 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29048929/the-effect-of-hamstring-tendon-autograft-harvest-on-the-restoration-of-knee-stability-in-the-setting-of-concurrent-anterior-cruciate-ligament-and-medial-collateral-ligament-injuries
#6
Thomas J Kremen, Landon S Polakof, Sean S Rajaee, Trevor J Nelson, Melodie F Metzger
BACKGROUND: A hamstring autograft is commonly used in anterior cruciate ligament (ACL) reconstruction (ACLR); however, there is evidence to suggest that the tendons harvested may contribute to medial knee instability. HYPOTHESIS: We tested the hypothesis that the gracilis (G) and semitendinosus (ST) tendons significantly contribute to sagittal, coronal, and/or rotational knee stability in the setting of ACLR with a concurrent partial medial collateral ligament (MCL) injury...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29044664/a-new-technique-of-surgical-planning-for-anterior-cruciate-ligament-reconstruction-feasibility-assessment-of-shear-wave-elastography-to-tendon-of-semitendinosus-muscle
#7
Yoshiaki Itoigawa, Yuji Takazawa, Yuichiro Maruyama, Keiichi Yoshida, Tatsuo Sakai, Koichiro Ichimura, Kazuo Kaneko
There is currently no method to quantify the quality of the harvested graft before anterior cruciate ligament (ACL) reconstruction. The purpose of the present study was to explore a method for measuring stiffness of the normal tendon of the semitendinosus muscle using shear wave elastography (SWE). Our investigation comprised two steps. First, we determined orientation of the semitendinosus tendon fibers in 20 lower legs of embalmed cadavers. Second, we investigated the feasibility of quantifying stiffness of the normal semitendinosus tendon by SWE in 24 subjects (48 legs: 24 male and 24 female subjects) in vivo...
October 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/29040171/biomechanical-comparison-of-single-bundle-and-double-bundle-posterior-cruciate-ligament-reconstruction-a-systematic-review-and-meta-analysis
#8
Dong-Yeong Lee, Dong-Hee Kim, Hyun-Jung Kim, Dae-Cheol Nam, Jin-Sung Park, Sun-Chul Hwang
BACKGROUND: Of the many issues regarding surgical techniques for posterior cruciate ligament (PCL) reconstruction, the choice between single-bundle (SB) and double-bundle (DB) reconstruction is one of the most debated. However, it is unclear which of the reconstruction techniques yields better outcomes in knees with a PCL injury. The purpose of this meta-analysis was to compare the benefits of SB and DB PCL reconstruction in terms of biomechanical outcomes. METHODS: The MEDLINE, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), Web of Science, and SCOPUS electronic databases were searched for relevant articles comparing the outcomes of SB and DB PCL reconstruction that were published up until August 2016...
October 17, 2017: JBJS Reviews
https://www.readbyqxmd.com/read/29032903/single-shot-femoral-nerve-block-does-not-cause-long-term-strength-and-functional-deficits-following-anterior-cruciate-ligament-reconstruction
#9
Kelechi R Okoroha, Lafi Khalil, Edward K Jung, Robert A Keller, Nathan E Marshall, Moneer Abouljoud, Derek Chan, Vasilios Moutzouros
PURPOSE: To determine if patients treated with a single-shot femoral nerve block have strength and functional deficits at 9-month follow-up. METHODS: Forty-three patients who underwent primary anterior cruciate ligament reconstructions were randomized to receive either a preoperative single-shot femoral nerve block or local infiltration anesthesia for primary pain control. All patients underwent a standardized comprehensive rehabilitation program postoperatively...
October 9, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29032484/young-athletes-return-too-early-to-knee-strenuous-sport-without-acceptable-knee-function-after-anterior-cruciate-ligament-reconstruction
#10
Susanne Beischer, Eric Hamrin Senorski, Christoffer Thomeé, Kristian Samuelsson, Roland Thomeé
PURPOSE: The purpose of this study was to evaluate the return to knee-strenuous sport rate, muscle function and subjective knee function among adolescent patients (15-20 years of age) and adult patients (21-30 years of age) 8 and 12 months, respectively, after anterior cruciate ligament (ACL) reconstruction. It was hypothesised that no differences in outcome would be found between age groups at 8 or 12 months after ACL reconstruction. METHODS: Cross-sectional data from five tests of muscle function, from the Knee injury and Osteoarthritis Outcome Score (KOOS) and the Tegner Activity Scale (Tegner), performed at 8 and 12 months after a primary ACL reconstruction, were extracted from a rehabilitation outcome register...
October 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29032309/anterior-cruciate-ligament-revision-with-achilles-tendon-allograft-in-young-athletes
#11
S Zaffagnini, A Grassi, G M Marcheggiani Muccioli, T R Di Sarsina, L Macchiarola, M Mosca, M P Neri, M Marcacci
BACKGROUND: Return to sport after revision ACL reconstruction is a controversial topic, several studies reported the results of different techniques and graft in sportsman, presenting an incredibly wide range of return to the same pre-injury activity level, from 0% to 100%. The purpose of this study was to evaluate the clinical outcomes and return to sport rate in young athletes after non anatomic double-bundle revision ACL reconstruction with Achilles allograft. HYPOTHESIS: the present revision technique was effective in terms of stability, return to sport and functional outcomes MATERIAL AND METHODS: All the athletes undergone Revision ACL reconstruction with non-irradiated Achilles tendon allograft with a non-anatomical double-bundle technique were included in the study...
October 12, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29029566/associations-among-quadriceps-strength-and-rate-of-torque-development-6-weeks-post-anterior-cruciate-ligament-reconstruction-and-future-hop-and-vertical-jump-performance-a-prospective-cohort-study
#12
Yong-Hao Pua, Benjamin F Mentiplay, Ross A Clark, Jia-Ying Ho
Study Design Prospective cohort. Background Quadriceps strength is associated with hop distance and jump height in persons who have undergone anterior cruciate ligament reconstruction (ACLR). However, it is unknown whether the ability to rapidly generate quadriceps torque in the early phase of recovery is associated with future hopping and jumping performance in this population. Objective To evaluate the prospective associations among quadriceps strength and rate of torque development (RTD) and single-leg hop for distance, vertical jump height, vertical ground reaction force (vGRF), and vertical force loading rate during a landing task in persons who have undergone ACLR...
October 13, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29028445/return-to-sport-specific-performance-after-primary-anterior-cruciate-ligament-reconstruction-a-systematic-review
#13
Nicholas G Mohtadi, Denise S Chan
BACKGROUND: Physicians counseling athletes on the prognosis of sport-specific performance outcomes after anterior cruciate ligament reconstruction (ACLR) depend on the published literature. However, critical appraisal of the validity and biases in these studies is required to understand how ACLR affects an athlete's ability to return to sport, the athlete's sport-specific performance, and his or her ability to achieve preinjury levels of performance. PURPOSE: This review identifies the published prognostic studies evaluating sport-specific performance outcomes after ACLR...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29028358/posterior-tibial-translation-measurements-on-magnetic-resonance-imaging-improve-diagnostic-sensitivity-for-chronic-posterior-cruciate-ligament-injuries-and-graft-tears
#14
Nicholas N DePhillipo, Mark E Cinque, Jonathan A Godin, Gilbert Moatshe, Jorge Chahla, Robert F LaPrade
BACKGROUND: Magnetic resonance imaging (MRI) of the knee is a highly sensitive and specific method for diagnosing acute posterior cruciate ligament (PCL) tears, with a reported accuracy of 96% to 100%. In chronic and revision settings, these injuries may be missed on MRI because of the apparent continuity of nonfunctional PCL fibers. Posterior tibial translation (PTT) of the medial compartment has been identified as a potential secondary finding of PCL tear on routine MRI. Purpose/Hypothesis: The purpose of this study was to evaluate the sensitivity of PTT on MRI associated with PCL injuries and compare it with the sensitivity of a radiologist's MRI interpretation with preoperative posterior knee stress radiographs as the gold standard...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29026421/comparison-of-patellar-versus-hamstring-tendon-autografts-in-arthroscopic-anterior-cruciate-ligament-reconstruction-a-6-month-follow-up-of-a-randomized-clinical-trial
#15
Alireza Sadeghpour, Adel Ebrahimpour, Bahamin Attar, Zahra Azizian
BACKGROUND: The purpose of this study was to compare the outcomes of anterior cruciate ligament (ACL) reconstruction using the patellar versus hamstring tendon (HT) autograft. MATERIALS AND METHODS: In this randomized clinical trial, fifty patients undergoing arthroscopic ACL reconstruction were randomized into two equal groups: Those treated with either autogenous patellar tendon grafts (PT group) or HT group grafts. All patients were reviewed immediately after surgery, at 6 and 12 weeks after surgery, and then at 6 months using the International Knee Documentation Committee evaluation form...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29023273/return-to-sports-after-athletes-undergo-meniscal-surgery-a-systematic-review
#16
Yong Seuk Lee, O-Sung Lee, Seung Hoon Lee
OBJECTIVE: The aim of this systematic review was to determine the time to and rate of the return to sports (RTS) after meniscal surgery and to compare these values among the different types of meniscal surgeries. STUDY DESIGN: Systematic review. METHODS: The MEDLINE, EMBASE, and Cochrane databases were searched. Studies that met the following criteria were included: (1) English article, (2) full-text available, (3) study on athletes, and (4) primary outcome is RTS after meniscal surgery, such as meniscectomy, meniscal repair, and meniscal allograft transplantation (MAT)...
October 5, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29019442/the-use-of-hamstring-fatigue-to-reduce-quadriceps-inhibition-after-anterior-cruciate-ligament-reconstruction
#17
Timothy Lowe, Xuanliang Neil Dong
Arthrogenic muscle inhibition, an inability to fully activate the quadriceps muscles, has been persistently observed after anterior cruciate ligament reconstruction (ACLr) surgery. Reductions in quadriceps activation may be partly due to the flexion reflex pathway, hamstrings activation, and reciprocal quadriceps inhibition. Since central fatigue has been shown to modify hamstring excitability and change the hamstring reflex response, hamstring fatigue might alleviate quadriceps muscle inhibition by counteracting the flexion reflex...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29018143/knee-upside-down
#18
Steven G J van der Aart, Remko J A Sonnega, Dirk-Jan Hofstee
We present a case of a 19-year-old woman with a forced hyperextension trauma of the knee causing a posteromedial fracture, a medial meniscus root tear and rupture of the posterior cruciate ligament. The posteromedial fracture of the tibial plateau was treated operatively with open reduction and internal fixation. Anatomical reconstruction was achieved. Postoperative treatment included unlimited flexion and minimal weight bearing. After 3 months, the patient had minimal pain after weight bearing and returned to preoperative range of motion...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29017801/influence-of-increased-posterior-tibial-slope-in-total-knee-arthroplasty-on-knee-joint-biomechanics-a-computational-simulation-study
#19
Kyoung-Tak Kang, Yong-Gon Koh, Juhyun Son, Oh-Ryong Kwon, Jun-Sang Lee, Sae-Kwang Kwon
BACKGROUND: The reconstructed posterior tibial slope (PTS) plays a significant role in restoring knee kinematics in cruciate-retaining-total knee arthroplasty (TKA). A few studies have reported the effect of the PTS on biomechanics. METHODS: This study investigates the effect of the PTS on tibiofemoral (TF) kinematics, patellofemoral (PF) contact stress, and forces at the quadriceps, posterior cruciate ligament (PCL) and collateral ligament after cruciate-retaining-TKA using computer simulations...
September 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28992770/influence-of-demographic-and-utilization-of-physical-therapy-interventions-on-clinical-outcomes-and-revision-rates-following-anterior-cruciate-ligament-reconstruction
#20
Caitlin J Miller, Jesse C Christensen, Ryan D Burns
Study Design Retrospective cohort from Intermountain Healthcare system Jan 2007-Dec 2014. Background Recent evolutions in healthcare delivery are putting physical therapists in the forefront to be more responsible for providing high-quality rehabilitation care within a more cost-effective manner. Studies investigating the association between physical therapy (PT) visit utilization and outcomes in vulnerable patient populations following anterior cruciate ligament reconstruction (ACLR) may provide useful insights...
October 9, 2017: Journal of Orthopaedic and Sports Physical Therapy
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