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(Anterior cruciate ligament) AND imaging

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https://www.readbyqxmd.com/read/29443537/a-randomized-clinical-trial-to-evaluate-attached-hamstring-anterior-cruciate-ligament-graft-maturity-with-magnetic-resonance-imaging
#1
Shaohua Liu, Hong Li, Hongyue Tao, Yaying Sun, Shiyi Chen, Jiwu Chen
BACKGROUND: The hamstring tendons are commonly harvested for anterior cruciate ligament (ACL) reconstruction with detachment of the tibial insertion. Retaining the insertion may help to preserve vascularity and viability of the graft and bypass the stages of avascular necrosis and revascularization, which might be beneficial to graft maturity. PURPOSE: To investigate and compare graft maturity by magnetic resonance imaging (MRI) after ACL reconstruction with preservation or detachment of hamstring tendon tibial insertion at up to 2 years...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29438746/longitudinal-changes-in-mr-t1%C3%AF-t2-signal-of-meniscus-and-its-association-with-cartilage-t1p-t2-in-acl-injured-patients
#2
Joseph Knox, Valentina Pedoia, Amy Wang, Matthew Tanaka, Gabby B Joseph, Jan Neumann, Thomas M Link, Xiaojuan Li, C Benjamin Ma
OBJECTIVE: To evaluate the longitudinal changes in meniscal T1ρ/T2 signal post-reconstruction in patients with acute anterior cruciate ligament (ACL) injury and to investigate the association with T1ρ/T2 signal in articular knee cartilage. METHOD: In this prospective study, knees of 37 patients with ACL-injury and reconstruction in addition to 13 healthy controls were scanned using magnetic resonance imaging (MRI) T1ρ/T2 mapping. Quantitative analysis of the meniscus was performed in the anterior/posterior horns of lateral/medial meniscus fourteen sub-compartments of cartilage spanning the medial/lateral area of the tibia and femoral condyles...
February 10, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29426012/mri-ute-t2-profile-characteristics-correlate-to-walking-mechanics-and-patient-reported-outcomes-2-years-after-acl-reconstruction
#3
Ashley A Williams, Matthew R Titchenal, Thomas P Andriacchi, Constance R Chu
OBJECTIVE: Quantitative MRI Ultrashort echo time (UTE) T2* is sensitive to cartilage deep tissue matrix changes after anterior cruciate ligament reconstruction (ACLR). This study was performed to determine whether UTE-T2* profile analyses is a useful clinical metric for assessing cartilage matrix degeneration. This work tests the hypotheses that UTE-T2* depthwise rates of change (profile slopes) correlated with clinical outcome metrics of walking mechanics and patient reported outcomes (PRO) in patients 2 years after ACLR...
February 6, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29421839/variability-in-the-clock-face-view-description-of-femoral-tunnel-placement-in-acl-reconstruction-using-mri-based-bony-models
#4
Matthew J Kraeutler, Kushal V Patel, Ali Hosseini, Guoan Li, Thomas J Gill, Jonathan T Bravman
Though controversial, the "clock face view" of the intercondylar notch remains a way some surgeons communicate regarding placement of the femoral tunnel in anterior cruciate ligament reconstruction. The purpose of this study was to quantify the differences in angle measurement between several previous descriptions of the clock face view by using a new reference standard. Three-Tesla magnetic resonance imaging (MRI) was used to scan 10 human knees to create three-dimensional MRI-based bony models which were used for measurements...
February 8, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29421837/all-inside-single-bundle-reconstruction-of-the-anterior-cruciate-ligament-with-the-anterior-half-of-the-peroneus-longus-tendon-compared-to-the-semitendinosus-tendon-a-two-year-follow-up-study
#5
Mingguang Bi, Chen Zhao, Shuijun Zhang, Bin Yao, Zheping Hong, Qing Bi
The anterior half of the peroneus longus tendon (AHPLT) has been reported to be acceptable for ligament reconstruction with respect to strength and safety. However, there is little information regarding the clinical outcomes after using the AHPLT compared with other autograft tendons. A prospective randomized controlled study was performed to compare the results of 62 cases of all-inside anatomical single-bundle anterior cruciate ligament (ACL) reconstruction using the AHPLT and 62 cases using semitendinosus graft with an average of 30...
February 8, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29420917/predictive-factors-of-hamstring-tendon-regeneration-and-functional-recovery-after-harvesting-a-prospective-follow-up-study
#6
Mathijs A M Suijkerbuijk, Max Reijman, Edwin H G Oei, Belle L van Meer, Ewoud R A van Arkel, Duncan E Meuffels
BACKGROUND: Semitendinosus and gracilis tendons may regenerate after harvesting for ligament reconstruction procedures. However, predictive factors of tendon regeneration and the extent of functional recovery remain unclear. PURPOSE: To identify predictive factors for hamstring tendon regeneration and to examine the morbidity of nonregenerated hamstring tendons. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Of the 154 patients who were included in a prospective follow-up study, 79 underwent reconstruction of the anterior cruciate ligament entailing the hamstring tendons and met the following inclusion criteria: (1) anterior cruciate ligament rupture diagnosed by physical examination and magnetic resonance imaging (MRI), (2) MRI within 6 months after trauma, (3) age between 18 and 45 years, and (4) 2-year follow-up MRI data available...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29416971/biologic-and-mechanical-augmentation-in-anterior-cruciate-ligament-reconstruction-fibrin-clot-augmentation-of-5-strand-hamstring-autograft
#7
Michael H Amini, Juan F Prieto
Hamstring autografts in anterior cruciate ligament reconstruction have an excellent clinical track record, but some patients have hamstring tendons that yield grafts of smaller diameter, which has been shown to be a significant risk factor for worse outcomes and graft failure. Some authors have advocated augmentation with allograft in these patients. Tripling the semitendinosus yields a completely autogenous 5-strand graft with a larger diameter but still of sufficient length. In addition, imaging studies still show signal heterogeneity within grafts, even autografts, after the healing process, which correlates with worse biomechanical properties...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29411519/semitendinosus-and-patellar-tendons-shear-modulus-evaluation-by-supersonic-shearwave-imaging-elastography
#8
C R C Fontenelle, P Mannarino, F B D O Ribeiro, M A Milito, A C P Carvalho, L L Menegaldo, L F Oliveira
PURPOSE: Shear modulus (μ) is directly correlated to the tissue stiffness and can predict the tendon ultimate force to failure. With the knee extended 0° (K0), semitendinosus tendon (ST) is tensioned while patellar tendon (PT) is relaxed. At 80o , knee flexion (K80) tendons present an opposite stress pattern; however, the relation between ST and PT μ in both situations was not studied yet. METHOD: We accessed the μ of the ST and PT at 0o and 80o knee flexion by supersonic shear wave imaging (SSI) elastography from 18 healthy males...
February 7, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29409674/an-in%C3%A2-vivo-prediction-of-anisometry-and-strain-in-anterior-cruciate-ligament-reconstruction-a-combined-magnetic-resonance-and-dual-fluoroscopic-imaging-analysis
#9
Willem A Kernkamp, Nathan H Varady, Jing-Sheng Li, Tsung-Yuan Tsai, Peter D Asnis, Ewoud R A van Arkel, Rob G H H Nelissen, Thomas J Gill, Samuel K Van de Velde, Guoan Li
PURPOSE: To evaluate the in vivo anisometry and strain of theoretical anterior cruciate ligament (ACL) grafts in the healthy knee using various socket locations on both the femur and tibia. METHODS: Eighteen healthy knees were imaged using magnetic resonance imaging and dual fluoroscopic imaging techniques during a step-up and sit-to-stand motion. The anisometry of the medial aspect of the lateral femoral condyle was mapped using 144 theoretical socket positions connected to an anteromedial, central, and posterolateral attachment site on the tibia...
February 3, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29402584/anteromedial-meniscofemoral-ligament-of-the-anterior-horn-of-the-medial-meniscus-clinical-magnetic-resonance-imaging-and-arthroscopic-features
#10
Young Mo Kim, Yong-Bum Joo
PURPOSE: To describe the clinical, arthroscopic, and magnetic resonance imaging (MRI) findings of knees with anomalous insertion of the anterior horn of the medial meniscus (AHMM) into the intercondylar notch via an anteromedial meniscofemoral ligament (AMMFL). METHODS: A total of 2,503 arthroscopic knee surgeries performed from July 2003 to October 2016 were reviewed retrospectively to identify knees with an AMMFL. Medical records, arthroscopic photographs, and MRI of identified cases were analyzed...
February 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29402583/diagnostic-accuracy-of-sequential-arthroscopic-approach-for-ramp-lesions-of-the-posterior-horn-of-the-medial-meniscus-in-anterior-cruciate-ligament-deficient-knee
#11
Seong Hwan Kim, Sang Hak Lee, Kang-Il Kim, Jae Woo Yang
PURPOSE: To document the diagnostic accuracy and steps for sequential arthroscopic exploration of ramp lesions-peripheral tear within 4 mm of meniscocapsular junction of medial meniscus-associated with anterior cruciate ligament (ACL) injury. METHODS: This was a prospective consecutive study of 195 primary ACL reconstructions with arthroscopic exploration for ramp lesion in 4 steps: (1) standard exploration through the anterolateral portal, (2) through the intercondylar space using a 30° arthroscope, (3) through the intercondylar space using a 70° arthroscope, and (4) after creation of a posteromedial portal...
February 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29401410/lateral-augmentation-procedures-in-anterior-cruciate-ligament-reconstruction-anatomic-biomechanical-imaging-and-clinical-evidence
#12
Alexander E Weber, William Zuke, Erik N Mayer, Brian Forsythe, Alan Getgood, Nikhil N Verma, Bernard R Bach, Asheesh Bedi, Brian J Cole
BACKGROUND: There has been an increasing interest in lateral-based soft tissue reconstructive techniques as augments to anterior cruciate ligament reconstruction (ACLR). The objective of these procedures is to minimize anterolateral rotational instability of the knee after surgery. Despite the relatively rapid increase in surgical application of these techniques, many clinical questions remain. PURPOSE: To provide a comprehensive update on the current state of these lateral-based augmentation procedures by reviewing the origins of the surgical techniques, the biomechanical data to support their use, and the clinical results to date...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29401408/preoperative-koos-and-sf-36-scores-are-associated-with-the-development-of-symptomatic-knee-osteoarthritis-at-7-years-after-anterior-cruciate-ligament-reconstruction
#13
J Kristopher Ware, Brett D Owens, Matthew R Akelman, Naga Padmini Karamchedu, Paul D Fadale, Michael J Hulstyn, Robert M Shalvoy, Gary J Badger, Braden C Fleming
BACKGROUND: Anterior cruciate ligament (ACL) tears are associated with the development of knee osteoarthritis despite ACL reconstruction surgery. However, little evidence is available to determine which patients will develop symptomatic knee osteoarthritis. PURPOSE: To determine if preoperative outcome measures-KOOS (Knee injury and Osteoarthritis Outcome Score) and SF-36 (36-item Short Form Health Survey)-were associated with the development of a symptomatic knee 7 years after ACL reconstruction...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29389836/strength-training-effects-on-muscular-regeneration-after-acl-reconstruction
#14
Birgit Friedmann-Bette, Francesca Profit, Thomas Gwechenberger, Nadine Weiberg, Mario Parstorfer, Marc-Andre Weber, Nikolaus Streich, Alexander Barié
PURPOSE: Protracted quadriceps muscle atrophy is observed after anterior cruciate ligament reconstruction (ACL-R). The aim of this study was to assess if quadriceps strength training with eccentric overload (CON/ECC) is more efficient to induce muscle regeneration after ACL-R than conventional concentric/eccentric (CON/ECC) strength training. METHODS: Biopsies from the vastus lateralis muscle were obtained from 37 recreational athletes after 12 weeks of regular rehabilitation following ACL-R and again after 12 weeks with twice a week either conventional CON/ECC (n = 16) or CON/ECC (n = 21) one-legged supervised leg-press training...
January 31, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29387653/operative-treatment-for-the-painful-posterior-thigh-after-hamstring-autograft-harvesting
#15
Mikko Laakso, Jussi Kosola, Pekka Niemi, Keijo Mäkelä, Juha Ranne, Sakari Orava, Lasse Lempainen
Background: Semitendinosus (ST) is widely used autograft in anterior cruciate ligament reconstructions (ACLR). Although tendon harvesting is a common procedure, some patients exhibit pain, cramping and dysfunctional at posterior thigh after the ACLR. The formation of the newly regenerated neotendon could be compromised by a new injury or too rapid rehabilitation. We present this clinical entity and the developed surgical technique and share our experience in treatment of these patients...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29379709/diagnostic-evaluation-of-the-knee-in-the-office-setting-using-small-bore-needle-arthroscopy
#16
Karan A Patel, David E Hartigan, Justin L Makovicka, Donald L Dulle, Anikar Chhabra
Arthroscopy is currently the gold standard for diagnosing intra-articular knee pathology. Magnetic resonance imaging (MRI) can be a clinical adjunct for diagnosis; however, it is not without its shortcomings. Although highly accurate, even advanced imaging misdiagnoses the condition in 1 in 14 patients with regard to anterior cruciate ligament pathology. Previous studies have indicated that MRI fails to identify meniscal pathology when one exists in 1 of every 10 cases, and diagnoses pathology when pathology truly does not exist in 1 of every 5 patients...
January 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29376084/chinese-ethnicity-is-associated-with-concomitant-cartilage-injuries-in-anterior-cruciate-ligament-tears
#17
Chloe Xiaoyun Chan, Keng Lin Wong, Shi Jie Toh, Lingaraj Krishna
Background: Chinese ethnicity is associated with the presence of knee osteoarthritis. This raises the possibility that it may similarly be associated with concomitant meniscus and cartilage injuries in patients with anterior cruciate ligament (ACL) tears. There are currently no published data on the effect of Chinese ethnicity in this regard. Purpose: The primary aim was to determine whether Chinese ethnicity is associated with concomitant intra-articular injuries in patients with ACL tears and to verify the correlation of age, sex, body mass index, mechanism of injury, cause of injury, and presence of bone contusions on magnetic resonance imaging with such injuries...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29373984/the-effect-of-targeted-exercise-on-knee-muscle-function-in-patients-with-persistent-hamstring-deficiency-following-acl-reconstruction-study-protocol-for-a-randomized-controlled-trial
#18
Bo Bregenhof, Uffe Jørgensen, Per Aagaard, Nis Nissen, Mark W Creaby, Jonas Bloch Thorlund, Carsten Jensen, Trine Torfing, Anders Holsgaard-Larsen
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction, using hamstring auto-graft is a common surgical procedure, which often leads to persistent hamstring muscle-strength deficiency and reduced function. The purpose of this randomized controlled trial (RCT) is to investigate the effect of a combined, progressive, strength and neuromuscular exercise intervention on knee muscle strength, functional capacity and hamstring muscle-tendon morphology in ACL-reconstructed patients with persistent hamstring muscle-strength deficiency compared with controls...
January 26, 2018: Trials
https://www.readbyqxmd.com/read/29371012/association-between-magnetic-resonance-imaging-measured-intercondylar-notch-dimensions-and-anterior-cruciate-ligament-injury-a-meta-analysis
#19
Hui Li, Chao Zeng, Yilun Wang, Jie Wei, Tuo Yang, Yang Cui, Dongxing Xie, Hua Liu, Guang-Hua Lei
PURPOSE: To explore the association between the magnetic resonance imaging (MRI)-measured intercondylar notch dimensions, including the intercondylar notch width (NW) and intercondylar notch width index (NWI), and the risk of anterior cruciate ligament (ACL) injury by performing a meta-analysis of studies that relied on the multiplanar imaging and soft-tissue visualization strengths of MRI. METHODS: The MEDLINE, Embase, and SportDiscus databases were searched from inception to March 2017...
January 20, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29369416/complete-tear-of-the-lateral-meniscus-posterior-root-is-associated-with-meniscal-extrusion-in-anterior-cruciate-ligament-deficient-knees
#20
Yusuke Kamatsuki, Takayuki Furumatsu, Masataka Fujii, Yuya Kodama, Shinichi Miyazawa, Tomohito Hino, Toshifumi Ozaki
This study aimed to evaluate the relationship between preoperative lateral meniscal extrusion (LME) and arthroscopic findings of lateral meniscus posterior root tear (LMPRT) in knees with anterior cruciate ligament (ACL) tear. Thirty-five knees that had LMPRTs with concomitant ACL tears on arthroscopy were evaluated. Patients were divided into two groups, partial and complete root tears, via arthroscopic findings at the time of ACL reconstruction. For comparison, we added two groups, using the same database; 20 normal knees (normal group) and 20 ACL-injured knees without LM injury (intact LM group)...
January 25, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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