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129 papers 1000+ followers MH Residency - Knee
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
Kevin Laudner, Daniel Evans, Regan Wong, Aaron Allen, Tom Kirsch, Brian Long, Keith Meister
BACKGROUND: Clinicians are often challenged when making return-to-play decisions following anterior cruciate ligament reconstruction (ACL-R). Isokinetic strength and jump performance testing are common tools used to make this decision. Unfortunately, vertical jump performance standards have not been clearly established and many clinicians do not have access to isokinetic testing equipment. PURPOSE: To establish normative jump and strength characteristics in ACL-R patients cleared by an orthopedic physician to return-to-play and to determine if relationships exist between knee isokinetic strength measurements and jump characteristics described using an electronic jump map system...
June 2015: International Journal of Sports Physical Therapy
Paul L Sousa, Aaron J Krych, Robert A Cates, Bruce A Levy, Michael J Stuart, Diane L Dahm
PURPOSE: The purpose of this study was to determine whether patients with excellent 6-month functional testing after ACL reconstruction had (1) higher risk of subsequent ACL tears, (2) superior knee function, and (3) increased activity levels compared to those with delayed clearance for return to sports at midterm follow-up. METHODS: A total of 223 patients underwent primary ACL reconstruction by a single surgeon and had functional and isokinetic testing performed 6 months post-operatively between 1998 and 2005...
July 24, 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Christin Zwolski, Laura C Schmitt, Catherine Quatman-Yates, Staci Thomas, Timothy E Hewett, Mark V Paterno
BACKGROUND: An objective assessment of quadriceps strength after anterior cruciate ligament reconstruction (ACLR) is an important clinical measure to determine readiness to return to sport (RTS). Not all clinicians are equipped with the means to objectively quantify quadriceps strength limb symmetry indices (Q-LSIs) via lower extremity isokinetic dynamometers, as recommended by previous studies. PURPOSE/HYPOTHESIS: The purpose of this study was to determine whether the International Knee Documentation Committee 2000 Subjective Knee Form (IKDC) score at time of RTS was a predictor of quadriceps strength in a young, athletic population after ACLR...
September 2015: American Journal of Sports Medicine
Chao-Jung Hsieh, Peter A Indelicato, Michael W Moser, Krista Vandenborne, Terese L Chmielewski
PURPOSE: To examine the magnitude and speed of knee extensor torque production at the initiation of advanced anterior cruciate ligament (ACL) reconstruction rehabilitation and the associations with self-reported knee function. METHODS: Twenty-eight subjects who were 12 weeks post-ACL reconstruction and 28 age- and sex-matched physically active controls participated in this study. Knee extensor torque was assessed bilaterally with an isokinetic dynamometer at 60°/s...
November 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Lindsey K Lepley, Riann M Palmieri-Smith
STUDY DESIGN: Cross-sectional. OBJECTIVES: To determine if quadriceps activation failure (QAF) moderates the relationship between quadriceps strength and physical function in individuals following anterior cruciate ligament (ACL) reconstruction. BACKGROUND: Quadriceps activation failure may impair the recovery of physical function after ACL reconstruction, given that QAF reduces strength and strength is related to physical function. Evidence of this relationship has been found in individuals with knee osteoarthritis, wherein patients with lower strength and greater QAF had lower levels of physical function...
December 2015: Journal of Orthopaedic and Sports Physical Therapy
Georgios Koutras, Manfred Bernard, Ioannis P Terzidis, Pericles Papadopoulos, Anastasios Georgoulis, Evangelos Pappas
OBJECTIVES: Hamstrings grafts are commonly used in ACL reconstruction, however, the effect of graft harvesting on knee flexion strength has not been longitudinally evaluated in functional positions. We hypothesized that greater deficits in knee flexion strength exist in the prone compared to the seated position and these deficits remain as rehabilitation progresses. DESIGN: Case series. METHODS: Forty-two consecutive patients who underwent ACL reconstruction with a hamstrings graft were followed prospectively for 9 months...
July 2016: Journal of Science and Medicine in Sport
Polyvios Kyritsis, Roald Bahr, Philippe Landreau, Riadh Miladi, Erik Witvrouw
BACKGROUND: The decision as to whether or not an athlete is ready to return to sport (RTS) after ACL reconstruction is difficult as the commonly used RTS criteria have not been validated. PURPOSE: To evaluate whether a set of objective discharge criteria, including muscle strength and functional tests, are associated with risk of ACL graft rupture after RTS. MATERIALS AND METHODS: 158 male professional athletes who underwent an ACL reconstruction and returned to their previous professional level of sport were included...
August 2016: British Journal of Sports Medicine
J Troy Blackburn, Brian Pietrosimone, Matt S Harkey, Brittney A Luc, Derek N Pamukoff
PURPOSE: Chronic quadriceps dysfunction has been implicated as a contributor to knee osteoarthritis (OA) development after anterior cruciate ligament reconstruction (ACLR). This dysfunction potentially leads to impulsive/high-rate loading during gait, thus accelerating cartilage degradation. The purpose of this study was to examine relationships between several indices of quadriceps function and gait biomechanics linked to knee OA development in individuals with ACLR. METHODS: Gait biomechanics and quadriceps function were assessed in 39 individuals with ACLR...
September 2016: Medicine and Science in Sports and Exercise
Ingrid Eitzen, Hege Grindem, Agnethe Nilstad, Håvard Moksnes, May Arna Risberg
BACKGROUND: Reduced quadriceps strength influences knee function and increases the risk of knee osteoarthritis. Thus, it is of significant clinical relevance to precisely quantify strength deficits in patients with knee injuries. PURPOSE: To evaluate isokinetic concentric quadriceps muscle strength torque values, assessed both from peak torque and at specific knee flexion joint angles, in patients with anterior cruciate ligament (ACL) injury, focal cartilage lesions, and degenerative meniscus tears...
October 2016: Orthopaedic Journal of Sports Medicine
Hai-Jun Wang, Ying-Fang Ao, Dong Jiang, Xi Gong, Yong-Jian Wang, Jian Wang, Jia-Kuo Yu
BACKGROUND: The incidence of the patellofemoral joint chondral lesions after anterior cruciate ligament reconstruction (ACLR) is disturbingly high. Few studies have assessed the factors affecting patellofemoral joint chondral lesions postoperatively. HYPOTHESIS: The recovery of quadriceps strength after ACLR could be associated with patellofemoral joint cartilage damage. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A total of 88 patients who underwent arthroscopic anatomic double-bundle ACLR with hamstring autografts received second-look arthroscopy at the time of metal staple removal at an average of 24...
September 2015: American Journal of Sports Medicine
Marit Baste Undheim, Ciaran Cosgrave, Enda King, Siobhán Strike, Brendan Marshall, Éanna Falvey, Andrew Franklyn-Miller
INTRODUCTION: Following anterior cruciate ligament reconstruction (ACLR), strength is a key variable in regaining full function of the knee. Isokinetic strength is commonly used as part of the return to sport (RTS) criteria. AIM: We systematically reviewed the isokinetic strength evaluation protocols that are currently being used following ACLR. A secondary aim was to suggest an isokinetic protocol that could meet RTS criteria. METHOD: Articles were searched using ScienceDirect, PubMed and Sage Journals Online, combined with cross-checked reference lists of the publications...
October 2015: British Journal of Sports Medicine
Paul W Kline, Kristin D Morgan, Darren L Johnson, Mary Lloyd Ireland, Brian Noehren
BACKGROUND: Rate of torque development (RTD) measures the ability of a muscle to produce torque quickly. Decreased quadriceps RTD may impair performance of sporting tasks after surgery. Currently, little is known about variations in quadriceps RTD between anterior cruciate ligament (ACL)-reconstructed and noninjured limbs. PURPOSE: To determine the differences in RTD of the quadriceps, the rate and timing of knee extensor moment (KEM) development, and knee flexion excursion during running after ACL reconstruction with patellar tendon autograft...
October 2015: American Journal of Sports Medicine
Kyu Sung Chung, Jeong Ku Ha, Cheol Hyun Yeom, Ho Jong Ra, Jin Woo Lim, Min Soo Kwon, Jin Goo Kim
BACKGROUND: After an anterior cruciate ligament (ACL) injury, the uninjured contralateral lower limb may become weakened because of neuromuscular changes, proprioceptive deficits, and disuse of the limb; this weakness predisposes the limb to ACL injury. However, no results have been reported regarding weakness in the contralateral limb after ACL injury. HYPOTHESIS: Muscle strength and functional status of the contralateral lower limb are reduced after unilateral ACL injury...
December 2015: American Journal of Sports Medicine
T David Luo, Ali Ashraf, Diane L Dahm, Michael J Stuart, Amy L McIntosh
BACKGROUND: Femoral nerve block (FNB) has become a popular method of postoperative analgesia for anterior cruciate ligament (ACL) reconstruction in pediatric and adolescent patients. Successful rehabilitation after surgery involves return of quadriceps and hamstring strength. PURPOSE: To compare knee strength and function 6 months after ACL reconstruction in pediatric and adolescent patients who received FNB versus patients with no nerve block. STUDY DESIGN: Cohort study; Level of evidence, 3...
February 2015: American Journal of Sports Medicine
David J Tennent, Christina M Hylden, Anthony E Johnson, Travis C Burns, Jason M Wilken, Johnny G Owens
INTRODUCTION: Quadriceps strength after arthroscopic knee procedures is frequently diminished several years postoperation. Blood flow restriction (BFR) training uses partial venous occlusion while performing submaximal exercise to induce muscle hypertrophy and strength improvements. The purpose of this study was to evaluate BFR as a postoperative therapeutic intervention after knee arthroscopy. METHODS: A randomized controlled pilot study comparing physical therapy with and without BFR after knee arthroscopy was conducted...
October 5, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Giuseppe Filardo, Berardo Di Matteo, Elizaveta Kon, Giulia Merli, Maurilio Marcacci
PURPOSE: Platelet-rich plasma (PRP) is currently the most exploited strategy in the clinical practice to provide a regenerative stimulus for tendon healing. The aim of the present study was to systematically review the available evidence on the treatment of the main tendon disorders where PRP is currently applied. METHODS: A systematic review of the literature was performed on the use of PRP as a treatment for tendinopathies focusing on the following sites: Achilles tendon, patellar tendon, rotator cuff tendons, and lateral elbow tendons...
September 24, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Simon Maretti Tornbjerg, Nis Nissen, Martin Englund, Uffe Jørgensen, Jeppe Schjerning, L Stefan Lohmander, Jonas Bloch Thorlund
BACKGROUND: The relationship between meniscal tears and other joint pathologies with patient-reported symptoms is not clear. We investigated associations between structural knee pathologies identified at surgery with preoperative knee pain and function in patients undergoing arthroscopic meniscal surgery. METHODS: This study included 443 patients from the Knee Arthroscopy Cohort Southern Denmark (KACS), a prospective cohort following patients 18 years or older undergoing arthroscopic meniscal surgery at 4 hospitals between 1 February 2013 and 31 January 2014...
September 16, 2016: British Journal of Sports Medicine
Alli Gokeler, Wouter Welling, Stefano Zaffagnini, Romain Seil, Darin Padua
PURPOSE: There is a lack of consensus regarding the appropriate criteria for releasing patients to return to sports (RTS) after anterior cruciate ligament reconstruction (ACLR). A test battery was developed to support decision-making. METHODS: Twenty-eight patients (22 males and 6 females) with a mean age of 25.4 ± 8.2 years participated and were 6.5 ± 1.0 months post-ACLR. All patients followed the same rehabilitation protocol. The test battery used consisted of the following: isokinetic test, 3 hop tests and the jump-landing task assessed with the LESS...
July 16, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Endre Soreide, Lars-Petter Granan, Geir A Hjorthaug, Birgitte Espehaug, Sigbjørn Dimmen, Lars Nordsletten
BACKGROUND: The administration of nonsteroidal anti-inflammatory drugs (NSAIDs) to patients undergoing anterior cruciate ligament reconstruction (ACLR) is controversial because it may impair tissue healing and clinical outcomes. PURPOSE: To assess the effect of NSAID administration on patients undergoing ACLR. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Included patients were aged >15 years and were registered in the Norwegian Knee Ligament Registry from 2008 until 2013 after the primary ACLR...
December 2016: American Journal of Sports Medicine
2016-09-02 14:26:53
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