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https://www.readbyqxmd.com/read/30232027/evaluating-meniscus-allograft-transplant-using-a-cost-effectiveness-threshold-analysis
#1
Ilya Bendich, William Rubenstein, Mohamed Mustafa Diab, Brian Feeley
BACKGROUND: It is unknown if meniscal allograft transplant (MAT) delays progression of osteoarthritis (OA). Cost-effectiveness threshold analysis can demonstrate the necessary delay in OA progression required by MAT to be considered cost-effective compared to non-operative management. The purpose of this study is to identify the efficacy MAT requires in delaying progression to OA in previously meniscectomized knees in order to be considered cost-effective compared to non-operative treatment...
September 17, 2018: Knee
https://www.readbyqxmd.com/read/30232026/survival-of-the-low-contact-stress-rotating-platform-total-knee-replacement-is-influenced-by-age-1058-implants-with-a-minimum-follow-up-of-10-years
#2
N Makaram, N D Clement, T Hoo, R Nutton, R Burnett
BACKGROUND: The low contact stress (LCS) mobile-bearing total knee replacement (TKR) was designed to minimise polyethylene wear, aseptic loosening and osteolysis. However, registry data suggests there is a significantly greater revision rate associated. The primary aim of this study was to assess long-term survivorship of the LCS TKR performed at a single high-volume centre. Secondary aims were to assess survival by mechanism of failure and identify predictors of revision. METHODS: During a 13-year period (1993-2006) 1091 LCS TKRs were performed by two senior surgeons...
September 17, 2018: Knee
https://www.readbyqxmd.com/read/30224151/mid-bundle-positioning-of-the-femoral-socket-increases-graft-rupture-in-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction
#3
Zakk M Borton, Sam K Yasen, Aadil Mumith, Adrian J Wilson
BACKGROUND: Anatomic anterior cruciate ligament (ACL) reconstructions are superior to non-anatomic graft placements with regard to controlling rotational laxity. Different techniques of anatomic single-bundle reconstruction exist. The femoral tunnel may be placed in a mid-bundle position (MB) or within the anteromedial bundle footprint (AM) with no definitive consensus as to the preferred position. Our institution, reflecting trends in surgical practice, has experience with both techniques...
September 14, 2018: Knee
https://www.readbyqxmd.com/read/30219252/is-anterolateral-ligament-rupture-a-reason-for-persistent-rotational-instability-after-anterior-cruciate-ligament-reconstruction
#4
Tahsin Gürpınar, Barış Polat, Ayşe Esin Polat, İlhan Nahit Mutlu, Tolga Tüzüner
BACKGROUND: The aim of the present study was to evaluate the clinical role of anterolateral ligament (ALL) rupture and its impact on rotational stability by comparing the clinical results and rotational stability between reconstructed anterior cruciate ligament (ACL) with intact ALL knees and reconstructed ACL with ALL injured knees. METHODS: A total of 69 patients who had undergone surgery for ACL reconstruction and had received a minimum of two years of follow-up were included...
September 12, 2018: Knee
https://www.readbyqxmd.com/read/30209014/no-differences-in-patient-reported-outcomes-between-medial-pivot-insert-and-symmetrical-insert-in-total-knee-arthroplasty-a-randomized-analysis
#5
Kohei Nishitani, Moritoshi Furu, Shinichiro Nakamura, Shinichi Kuriyama, Masahiro Ishikawa, Hiromu Ito, Shuichi Matsuda
BACKGROUND: Although total knee arthroplasty (TKA) using a medial pivot insert reportedly improves kinematics compared with a symmetrical insert, improvements in patient-reported outcomes have not yet been reported. The aim of this study was to determine whether insert designs influenced patient-reported outcomes. METHODS: Seventy TKAs for osteoarthritis were randomly allocated to a symmetrical dish insert (SD group: 35 knees) or medial pivot insert (MP group: 35 knees)...
September 9, 2018: Knee
https://www.readbyqxmd.com/read/30196983/one-stage-revision-anterior-cruciate-ligament-reconstruction-in-cases-with-excessive-tunnel-osteolysis-results-of-a-new-technique-using-impaction-bone-grafting
#6
Joachim Demyttenaere, Steven Claes, Johan Bellemans
BACKGROUND: This level IV study describes a new one-stage procedure for revision ACL reconstruction in cases with extreme tunnel widening. METHODS: Eight consecutively treated subjects requiring ACL revision and presenting with excessive tunnel widening (87.5% to 250% tunnel enlargement) were included in this study. The graft-tunnel mismatch was resolved in this one-stage revision procedure by the use of custom-made eight to 10 mm cylindrical shaped bone allografts in a press-fit construct with the ACL-graft in combination with the usual fixation devices for ACL-reconstruction...
September 6, 2018: Knee
https://www.readbyqxmd.com/read/30193977/long-term-results-after-primary-augmented-repair-of-proximal-tears-of-the-anterior-cruciate-ligament-with-the-kennedy-lad-does-it-work
#7
M Winnisch, T M Tiefenboeck, M Steiger, M Komjati, M Hofbauer, R Kdolsky
BACKGROUND: The purpose of this study was to objectively evaluate the clinical functionality of the knee joint 30 years after surgical augmentation of the ACL with the "Kennedy Ligament Augmentation Device ®" (Kennedy LAD®). METHODS: The patient collective consisted of 41 patients with an average age of 59.51 years (±10.18 standard deviation). Included were all patients treated operatively with a Kennedy LAD® augmented reattachment of the ACL at the Department of Trauma Surgery between 1983 and 1985...
September 4, 2018: Knee
https://www.readbyqxmd.com/read/30193976/patellofemoral-joint-replacement-mean-five-year-follow-up
#8
Serajdin Ajnin, Donald Buchanan, James Arbuthnot, Richard Fernandes
BACKGROUND: The Femoro Patella Vialli FPV is a second-generation patellofemoral arthroplasty implant. It is the second most commonly used patellofemoral implant in the National Joint Registry of England and Wales. This is the first published mid-term outcome series for this prosthesis. METHODS: We reviewed the outcomes for all patients who had patellofemoral arthroplasty. Primary outcome was the intention to revise the implant; secondary outcome measures were Oxford and Kujala outcome scores...
September 4, 2018: Knee
https://www.readbyqxmd.com/read/30172444/frontal-plane-movement-of-the-pelvis-and-thorax-during-dynamic-activities-in-individuals-with-and-without-anterior-cruciate-ligament-injury
#9
Jennifer L Davies, Kate Button, Valerie Sparkes, Robert W van Deursen
BACKGROUND: For elite athletes with anterior cruciate ligament (ACL) reconstruction, reducing pelvis and trunk obliquities is a common goal of rehabilitation. It is not known if this is also a suitable goal for the general population. This study aimed to quantify pelvis and thorax obliquities during dynamic activities in individuals from the general population with and without history of ACL injury. METHODS: Retrospective analysis of cross-sectional data from 30 participants with ACL reconstruction, 28 participants with ACL deficiency (ACLD), and 32 controls who performed overground walking and jogging, single-leg squat, and single-leg hop for distance...
August 29, 2018: Knee
https://www.readbyqxmd.com/read/30150069/predicted-quadriceps-vs-quadrupled-hamstring-tendon-graft-size-using-3-dimensional-mri
#10
William B Ashford, Thomas H Kelly, Russell W Chapin, John W Xerogeanes, Harris S Slone
BACKGROUND: The objective of this study is to (1) compare the predicted cross-sectional area and diameter between quadriceps tendon and quadrupled hamstring autografts, and (2) assess the predicted size of the quadriceps tendon graft in patients with hamstrings that are insufficient for use in ACL reconstruction. METHODS: A retrospective review of 54 knee 3D MRIs was conducted. Quadriceps tendon graft area was defined as a one-centimeter wide area of quadriceps tendon, measured three centimeters above the patella perpendicular to tendon axis...
August 24, 2018: Knee
https://www.readbyqxmd.com/read/30150068/histopathological-study-of-the-infrapatellar-fat-pad-in-the-rat-model-of-patellar-tendinopathy-a-basic-study
#11
Takashi Kitagawa, Junsuke Nakase, Yasushi Takata, Kengo Shimozaki, Kazuki Asai, Hiroyuki Tsuchiya
BACKGROUND: Patellar tendinopathy is difficult to successfully treat. This study aimed to characterize the pathological changes of the infrapatellar fat pad (IPFP) in patellar tendinopathy (PT), and to investigate the influence of PT on the development of fibrotic changes in the IPFP. METHODS: Forty male Wistar rats were randomly divided into PT (n = 20) and control groups (n = 20). Bacterial collagenase I (patellar tendinopathy group) or saline (control) was injected, intratendinous, into the patellar tendon...
August 24, 2018: Knee
https://www.readbyqxmd.com/read/30150067/ten-year-survival-and-seven-year-functional-results-of-cementless-oxford-unicompartmental-knee-replacement-a-prospective-consecutive-series-of-our-first-1000-cases
#12
S Campi, H Pandit, G Hooper, D Snell, C Jenkins, C A F Dodd, R Maxwell, D W Murray
BACKGROUND: Cementless fixation is an alternative to cemented unicompartmental knee replacement (UKR), with several advantages over cementation. This study reports the ten-year survival and seven-year clinical outcome of cementless Oxford unicompartmental knee replacement (OUKR). METHODS: This prospective study describes the clinical outcome and survival of the first 1000 consecutive cementless medial OUKRs implanted at two centres for recommended indications. RESULTS: The 10-year survival was 97% (CI 95%: 92-100%), with 25 knees being revised...
August 24, 2018: Knee
https://www.readbyqxmd.com/read/30121151/does-pre-operative-anxiety-and-or-depression-affect-patient-outcome-after-primary-knee-replacement-arthroplasty
#13
Andrew R Jones, Saeed Al-Naseer, Owen Bodger, E T R James, Andrew P Davies
BACKGROUND: Chronic pain is associated with psychological distress, most commonly manifested as anxiety and/or depression. METHODS: In order to investigate the effect of such distress on outcome from knee arthroplasty, we prospectively investigated the anxiety and depression levels of 104 patients undergoing a total of 107 primary knee arthroplasty procedures and the outcomes they achieved pre-operatively and at six weeks, one year and seven years post-operatively...
August 15, 2018: Knee
https://www.readbyqxmd.com/read/30121150/effect-of-wearing-a-knee-brace-or-sleeve-on-the-knee-joint-and-anterior-cruciate-ligament-force-during-drop-jumps-a-clinical-intervention-study
#14
Jeheon Moon, Hyeyoung Kim, Jusung Lee, Siddhartha Bikram Panday
BACKGROUND: Knee braces are considered to be extremely useful tools in reducing the shear force of knee joints for non-contact anterior cruciate ligament (ACL) injury prevention. However, the effectiveness of sports knee braces and sleeves remains to be identified. Therefore, the purpose of this study was to evaluate the effectiveness of wearing commercialized sports knee braces and sleeves on knee kinematics, kinetics, and ACL force during drop jumps using musculoskeletal modeling analysis...
August 15, 2018: Knee
https://www.readbyqxmd.com/read/30115592/influence-of-patient-related-factors-on-clinical-outcome-of-tibial-tubercle-transfer-combined-with-medial-patellofemoral-ligament-reconstruction
#15
Jannik Frings, Matthias Krause, Peter Wohlmuth, Ralph Akoto, Karl-Heinz Frosch
BACKGROUND: Tibial tubercle transfer is frequently used for treating patellar instability. This study aimed to analyze the clinical results following tibial tuberosity transfer with medial patellofemoral ligament (MPFL) reconstruction in the treatment of patellar instability. METHODS: Seventy-two cases presenting a lateralized tibial tubercle were treated with tibial tuberosity transfer and MPFL reconstruction. Pre-operative and postoperative pain levels and knee function were evaluated using common scoring systems...
August 14, 2018: Knee
https://www.readbyqxmd.com/read/30115591/single-leg-vertical-jump-test-as-a-functional-test-after-anterior-cruciate-ligament-reconstruction
#16
Dhong Won Lee, Sang Jin Yang, Seung Ik Cho, Jung Ho Lee, Jin Goo Kim
BACKGROUND: The aim of this study was to identify the correlations between the single-leg vertical jump (SLVJ) test and subjective and objective tests which were used widely for determining return-to-sports (RTS) after anterior cruciate ligament reconstruction (ACLR). METHODS: Seventy-five patients (29.5 ± 9.2 years) who underwent ACLR between May 2012 and Jan 2014 were included. Subjective knee scoring systems including subjective International Knee Documentation Committee (IKDC) score, Lysholm score, Tegner activity scale, and ACL-Return to Sports after Injury (ACL-RSI) scale were assessed...
August 14, 2018: Knee
https://www.readbyqxmd.com/read/30115590/influence-of-tibial-component-rotation-on-short-term-clinical-outcomes-in-oxford-mobile-bearing-unicompartmental-knee-arthroplasty
#17
Tomoyuki Kamenaga, Takafumi Hiranaka, Kenichi Kikuchi, Yuichi Hida, Takaaki Fujishiro, Koji Okamoto
BACKGROUND: Malposition of tibial components is an important factor for complications in unicompartmental knee arthroplasty (UKA), but the direct relationship between clinical outcomes and position of tibial component remains unknown. We aimed to investigate whether tibial component rotation in the axial plane could affect clinical outcomes after UKA. METHODS: A total of 50 patients with anteromedial osteoarthritis of the knee underwent Oxford mobile-bearing UKA in this study...
August 13, 2018: Knee
https://www.readbyqxmd.com/read/30115588/arthroscopic-treatment-for-symptomatic-lateral-discoid-meniscus-the-effects-of-different-ages-groups-and-procedures-on-surgical-outcomes
#18
Yasuo Ohnishi, Hirotaka Nakashima, Hitoshi Suzuki, Eiichiro Nakamura, Akinori Sakai, Soshi Uchida
BACKGROUND: There is a paucity of literature regarding the results of arthroscopic saucerization, with or without stabilization, for lateral discoid meniscus (LDM) in children, and differences in clinical outcomes between adults and children. The purpose of this study was to compare the clinical outcomes following arthroscopic treatment of symptomatic LDM in children versus adults. Secondly, outcomes of different surgical procedures (saucerization only and saucerization with repair or centralization) were also compared...
August 13, 2018: Knee
https://www.readbyqxmd.com/read/30115587/the-role-of-excessive-body-weight-and-meniscal-instability-in-the-progression-of-osteoarthritis-in-a-rat-model
#19
Taylor L Ernest, Peter E Kondrashov
BACKGROUND: The main objective of the study was to determine if excessive body weight and meniscal destabilization cause knee articular cartilage damage and changes in meniscal histology indicative of knee osteoarthritis (OA). METHODS: Forty female Lewis rats were randomly assigned to regular diet sham surgery, regular diet medial meniscus destabilization (DMM) surgery, high-fat diet sham surgery, or high-fat diet DMM surgery. Surgical intervention occurred four weeks after diet initiation...
August 13, 2018: Knee
https://www.readbyqxmd.com/read/30108012/characteristic-morphology-of-the-proximal-tibiofibular-joint-in-patients-with-discoid-lateral-meniscus
#20
Norifumi Suga, Tomoyuki Nakasa, Masakazu Ishikawa, Atsuo Nakamae, Seiju Hayashi, Masahiro Yoshikawa, Yoshikazu Sumida, Yusuke Tsuyuguchi, Nobuo Adachi
BACKGROUND: Patients with discoid lateral meniscus (DLM) are prone to meniscal injuries related to its shape and abnormal mobility. The anatomical joint inclination of the proximal tibiofibular joint (PTFJ) can also affect joint movement in knee motion. However, an association between PTFJ morphology and DLM remains unclear. The purpose of this study was to investigate the morphology of the PTFJ on MRI and how this differs between patients with and without DLM. MATERIALS AND METHODS: Fifty-eight patients with DLM and 58 age-matched controls (normal meniscus) were included in this study...
August 11, 2018: Knee
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