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Mette K Zebis, Christoffer H Andersen, Jesper Bencke, Christina Ørntoft, Connie Linnebjerg, Per Hölmich, Kristian Thorborg, Per Aagaard, Lars L Andersen
The aim of the present single-case study was to investigate the effect of 6 weeks' kettlebell training on the neuromuscular risk profile for ACL injury in a high-risk athlete returning to sport after ACL reconstruction. A female elite soccer player (age 21 years) with no previous history of ACL injury went through neuromuscular screening as measured by EMG preactivity of vastus lateralis and semitendinosus during a standardized sidecutting maneuver. Subsequently, the player experienced a noncontact ACL injury...
2017: Case Reports in Orthopedics
Timothy M McGrath, Gordon Waddington, Jennie M Scarvell, Nick Ball, Rob Creer, Kevin Woods, Damian Smith, Roger Adams
BACKGROUND: Additional high-quality prospective studies are needed to better define the objective criteria used in relation to return-to-sport decisions after synthetic (ligament advanced reinforcement system [LARS]) and autograft (hamstring tendon [2ST/2GR]) anterior cruciate ligament (ACL) reconstruction in active populations. PURPOSE: To prospectively investigate and describe the recovery of objective clinical outcomes after autograft (2ST/2GR) and synthetic (LARS) ACL reconstructions, as well as to investigate the relationship between these clinimetric test outcomes and return-to-sport activity (Tegner activity scale [TAS] score) at 12 and 24 months postoperatively...
November 2016: Orthopaedic Journal of Sports Medicine
Gilbert Moatshe, Alex W Brady, Erik L Slette, Jorge Chahla, Travis Lee Turnbull, Lars Engebretsen, Robert F LaPrade
BACKGROUND: Knee dislocations often require multiple concurrent ligament reconstructions, which involve creating several tunnels in the distal femur. Therefore, the risk of tunnel convergence is increased because of the limited bone volume within the distal aspect of the femur. PURPOSE: To assess the risk of tunnel convergence and determine the optimal reconstruction tunnel orientations for multiple ligament reconstructions in the femur. STUDY DESIGN: Descriptive laboratory study...
November 21, 2016: American Journal of Sports Medicine
Dimitrios Ph Iliadis, Dimitrios N Bourlos, Dimitrios S Mastrokalos, Efstathios Chronopoulos, George C Babis
BACKGROUND: Graft choice for anterior cruciate ligament (ACL) reconstruction is of critical importance. Various grafts have been used so far, with autografts long considered the optimal solution for the treatment of ACL-deficient knees. Limited data are available on the long-term survivorship of synthetic grafts. PURPOSE: To compare the functional outcome and survivorship of ACL reconstructions performed using the LARS (ligament augmentation and reconstruction system) ligament and the ABC (active biosynthetic composite) purely polyester ligament...
June 2016: Orthopaedic Journal of Sports Medicine
Mathew J Failla, David S Logerstedt, Hege Grindem, Michael J Axe, May Arna Risberg, Lars Engebretsen, Laura J Huston, Kurt P Spindler, Lynn Snyder-Mackler
BACKGROUND: Rehabilitation before anterior cruciate ligament (ACL) reconstruction (ACLR) is effective at improving postoperative outcomes at least in the short term. Less is known about the effects of preoperative rehabilitation on functional outcomes and return-to-sport (RTS) rates 2 years after reconstruction. PURPOSE/HYPOTHESIS: The purpose of this study was to compare functional outcomes 2 years after ACLR in a cohort that underwent additional preoperative rehabilitation, including progressive strengthening and neuromuscular training after impairments were resolved, compared with a nonexperimental cohort...
October 2016: American Journal of Sports Medicine
Jason M Schon, Gilbert Moatshe, Alex W Brady, Raphael Serra Cruz, Jorge Chahla, Grant J Dornan, Travis Lee Turnbull, Lars Engebretsen, Robert F LaPrade
BACKGROUND: Anterior cruciate ligament (ACL) tears are one of the most common injuries among athletes. However, the ability to fully restore rotational stability with ACL reconstruction (ACLR) remains a challenge, as evidenced by the persistence of rotational instability in up to 25% of patients after surgery. Advocacy for reconstruction of the anterolateral ligament (ALL) is rapidly increasing because some biomechanical studies have reported that the ALL is a significant contributor to internal rotational stability of the knee...
October 2016: American Journal of Sports Medicine
Cathrine Aga, Katharine J Wilson, Steinar Johansen, Grant Dornan, Robert F La Prade, Lars Engebretsen
PURPOSE: The consequence of tunnel widening after ACL reconstructions is foremost of importance in case of revision surgery. Tunnel expansion leads to bone loss close to the joint, and additional surgery with bone grafting prior to revision surgery might be necessary. The purpose of the study was to measure widening of the tunnels in single-bundle (SB) and double-bundle (DB) ACL reconstructed knees during the first year after surgery, detected by a novel, semi-automated 3D CT imaging modality...
June 21, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Haukur Björnsson, Kristian Samuelsson, David Sundemo, Neel Desai, Ninni Sernert, Lars Rostgård-Christensen, Jón Karlsson, Jüri Kartus
BACKGROUND: There is no consensus in the current literature on which surgical options render the best long-term results after anterior cruciate ligament (ACL) reconstruction in terms of clinical outcomes and the development of radiographic osteoarthritis (OA). PURPOSE: To investigate the long-term clinical and radiographic results after ACL reconstruction using either a patellar tendon (PT) autograft or a hamstring tendon (HT) autograft. STUDY DESIGN: Randomized controlled trial; Level of evidence, 2...
September 2016: American Journal of Sports Medicine
Svend Ulstein, Karin Bredland, Asbjørn Årøen, Lars Engebretsen, Jan Harald Røtterud
PURPOSE: To compare patient-reported outcome 5-9 years after anterior cruciate ligament (ACL) reconstruction in patients with and without a concomitant full-thickness [International Cartilage Repair Society (ICRS) grade 3-4] cartilage lesion. METHODS: This is a prospective follow-up of a cohort of 89 patients that were identified in the Norwegian National Knee Ligament Registry and included in the current study in 2007, consisting of 30 primary ACL-reconstructed patients with a concomitant, isolated full-thickness cartilage lesion (ICRS grade 3 and 4) and 59 matched controls without cartilage lesions (ICRS grade 1-4)...
May 19, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Hege Grindem, Lynn Snyder-Mackler, Håvard Moksnes, Lars Engebretsen, May Arna Risberg
BACKGROUND: Knee reinjury after ACL reconstruction is common and increases the risk of osteoarthritis. There is sparse evidence to guide return to sport (RTS) decisions in this population. OBJECTIVES: To assess the relationship between knee reinjury after ACL reconstruction and (1) return to level I sports, (2) timing of RTS and (3) knee function prior to return. METHODS: 106 patients who participated in pivoting sports participated in this prospective 2-year cohort study...
July 2016: British Journal of Sports Medicine
Marianne Bakke Johnsen, Maren Hjelle Guddal, Milada Cvancarova Småstuen, Håvard Moksnes, Lars Engebretsen, Kjersti Storheim, John-Anker Zwart
BACKGROUND: An anterior cruciate ligament (ACL) injury is a severe injury that may require ACL reconstruction (ACLR) to enable the return to sport. Risk factors for ACLR have not firmly been established in the general adolescent population. PURPOSE: To investigate the incidence and risk factors for ACLR in a population-based cohort of adolescents. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: We prospectively followed 7644 adolescents from the adolescent part of the Nord-Trøndelag Health Study, included from 2006 to 2008...
April 27, 2016: American Journal of Sports Medicine
Ioannis Karikis, Neel Desai, Ninni Sernert, Lars Rostgard-Christensen, Jüri Kartus
BACKGROUND: The aim of this prospective randomized study was to compare the outcomes of the anatomic double-bundle (DB) and anatomic single-bundle (SB) techniques 5 years after anterior cruciate ligament (ACL) reconstruction. Since more effective restoration of rotational laxity is considered the main advantage of the DB technique, the pivot-shift test was the primary outcome variable of the study. HYPOTHESIS: Double-bundle ACL reconstruction will result in a better outcome in terms of the pivot-shift test...
May 2016: American Journal of Sports Medicine
Bernardo Crespo, Cathrine Aga, Katharine J Wilson, Shannon M Pomeroy, Robert F LaPrade, Lars Engebretsen, Coen A Wijdicks
BACKGROUND: Revision anterior cruciate ligament (ACL) reconstruction requires a precise evaluation of previous tunnel locations and diameters. Enlargement of the tunnels, despite not usually affecting primary reconstruction outcomes, plays an important role in revision ACL management. Three dimensional (3D) computed tomography (CT) models are reported to be the most accurate method for identifying the tunnel position and possible conflicts with a revision tunnel placement. However, the ability of 3D CT to measure the tunnel size is still not proven...
December 2014: Journal of Experimental Orthopaedics
May Arna Risberg, Britt Elin Oiestad, Ragnhild Gunderson, Arne Kristian Aune, Lars Engebretsen, Adam Culvenor, Inger Holm
BACKGROUND: Progression of tibiofemoral (TF) and patellofemoral (PF) osteoarthritis (OA) and changes in knee function more than 15 years after anterior cruciate ligament reconstruction (ACLR) are not well understood. PURPOSE: To examine the progression of knee OA and changes in symptoms and function in isolated and combined injuries from 15 to 20 years after ACLR. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A total of 210 subjects with ACLR were prospectively followed...
May 2016: American Journal of Sports Medicine
Jan Harald Røtterud, Einar Andreas Sivertsen, Magnus Forssblad, Lars Engebretsen, Asbjørn Årøen
BACKGROUND: The treatment of concomitant cartilage lesions in anterior cruciate ligament (ACL)-injured knees is debatable. PURPOSE: To evaluate the effect of debridement or microfracture (MF) compared with no treatment of concomitant full-thickness (International Cartilage Repair Society [ICRS] grades 3-4) cartilage lesions on patient-reported outcomes after ACL reconstruction. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: Six hundred forty-four patients who underwent primary unilateral ACL reconstruction and had a concomitant full-thickness cartilage lesion treated simultaneously by debridement (n = 129) or MF (n = 164), or underwent no treatment (n = 351) of the cartilage lesion, registered in the Norwegian and Swedish National Knee Ligament Registries from 2005 to 2008 were included...
February 2016: American Journal of Sports Medicine
Olle Månsson, Ninni Sernert, Lars Ejerhed, Jüri Kartus
PURPOSE: The aims were to evaluate the results 10 to 20 years after anterior cruciate ligament (ACL) reconstruction performed in adolescents in terms of bone mineral density (BMD) in the calcanei using the dual-energy x-ray absorptiometry (DXA) technique, activity level, and quality of life. METHODS: A case-control study of adolescents who underwent ACL reconstruction between 1992 and 2002 was performed. The inclusion criterion was a unilateral ACL injury. The exclusion criteria were bilateral ACL injury, contralateral ACL reconstruction, posterior cruciate ligament injury, and previous or present fractures of either lower extremity...
April 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Christian Owesen, Einar Andreas Sivertsen, Lars Engebretsen, Lars-Petter Granan, Asbjørn Årøen
BACKGROUND: Reports on outcome after posterior cruciate ligament (PCL) reconstruction often contain both isolated PCL and combined knee ligament injuries. This makes it difficult to conclude on the outcome after reconstruction of isolated PCL injuries. PURPOSE: To investigate the outcome after PCL reconstruction in patients with an isolated PCL injury and to compare this with the outcome of patients treated with reconstruction after isolated anterior cruciate ligament (ACL) injuries...
August 2015: Orthopaedic Journal of Sports Medicine
Martina Åhlén, Mattias Lidén, Tomas Movin, Nikos Papadogiannakis, Lars Rostgård-Christensen, Jüri Kartus
BACKGROUND: Semitendinosus (ST) and/or gracilis (G) autografts are the most used grafts for anterior cruciate ligament (ACL) surgery. The tendons have been shown to be able to regenerate but with focal areas of scar tissue in the short term. There are no long-term histological studies of the regenerated tendons. HYPOTHESIS: In the long term, the regenerated ST tendon normalizes and has a similar histology as the contralateral nonharvested tendon. STUDY DESIGN: Case-control study; Level of evidence, 3...
September 2014: Orthopaedic Journal of Sports Medicine
John Williams, Jonathan Hutt, Mark Rickman
This report details the reconstruction of the anterior cruciate ligament in an 18-year-old man with Ehlers-Danlos syndrome (EDS). The reduced mechanical properties of the tissue in EDS can pose a challenge to the orthopaedic surgeon. In this case, we describe the use of a hamstring autograft combined with a Ligament Advanced Reinforcement System (LARS). There was a good radiographical, clinical, and functional outcome after two years. This technique gave a successful outcome in the reconstruction of the ACL in a patient with EDS and therefore may help surgeons faced with the same clinical scenario...
2015: Case Reports in Orthopedics
Thomas M Tiefenboeck, Elisabeth Thurmaier, Michael M Tiefenboeck, Roman C Ostermann, Julian Joestl, Markus Winnisch, Mark Schurz, Stefan Hajdu, Marcus Hofbauer
BACKGROUND: Since the 1980's several artificial ligaments were used for reconstruction of the anterior cruciate ligament (ACL) serving different complications. The aim of this study was to assess the clinical and functional outcomes of primary ACL reconstruction using the Ligament Augmentation Reconstruction System (LARS™) with a minimum follow-up of 10-years. The LARS™ presents a synthetic material consisting of non-absorbing polyethylene terephthalate fibres used for ligament reconstruction...
December 2015: Knee
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