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https://www.readbyqxmd.com/read/27818185/validation-of-a-french-patient-reported-outcome-measure-for-patello-femoral-disorders-the-lille-patello-femoral-score
#1
S Putman, F Rémy, G Pasquier, F Gougeon, H Migaud, A Duhamel
BACKGROUND: The diagnosis of patello-femoral instability (PFI) relies chiefly on the patient's clinical findings. Nevertheless, few clinical scores specifically designed to evaluate the patello-femoral joint are available. The Lille scoring system is a 12-item self-questionnaire yielding a score from 0 to 100 that is used in France but has not been validated. We therefore conducted a validation study in a population of younger patients with PFI. HYPOTHESIS: The Lille scoring system meets validation criteria for patient-reported outcome measures (PROMs)...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27699725/arthroscopic-lateral-retinacular-release-and-modified-elmslie-trillat-operation-improve-severe-isolated-lateral-patello-femoral-osteoarthritis
#2
Renn-Chia Lin, Ko-Huang Lue, Ko-Hsiu Lu
To evaluate whether arthroscopic lateral retinacular release and the modified Elmslie-Trillat operation improve osteoarthritis (OA) progression and clinical outcomes in patients with severe isolated lateral patello-femoral OA. Nine women (11 knees) and one man (one knee) with isolated late-stage lateral patello-femoral OA underwent surgery. The severity of patello-femoral OA was recorded using the Merchant method, while the level of pain and anterior knee function were scored using the visual analogue scale (VAS) and Kujala knee scores, respectively...
October 3, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27393009/structural-effects-of-sprifermin-in-knee-osteoarthritis-a-post-hoc-analysis-on-cartilage-and-non-cartilaginous-tissue-alterations-in-a-randomized-controlled-trial
#3
Frank W Roemer, Aida Aydemir, Stefan Lohmander, Michel D Crema, Monica Dias Marra, Norma Muurahainen, David T Felson, Felix Eckstein, Ali Guermazi
BACKGROUND: A recent publication on efficacy of Sprifermin for knee osteoarthritis (OA) using quantitatively MRI-defined central medial tibio-femoral compartment cartilage thickness as the structural primary endpoint reported no statistically significant dose response. However, Sprifermin was associated with statistically significant, dose-dependent reductions in loss of total and lateral tibio-femoral cartilage thickness. Based on these preliminary promising data a post-hoc analysis of secondary assessment and endpoints was performed to evaluate potential effects of Sprifermin on semi-quantitatively evaluated structural MRI parameters...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27392843/impairments-of-postural-stability-core-endurance-fall-index-and-functional-mobility-skills-in-patients-with-patello-femoral-pain-syndrome
#4
Gul Deniz Yilmaz Yelvar, Yasemin Çirak, Murat Dalkilinç, Yasemin Parlak Demir, Gul Baltaci, Mahmut Kömürcü, Gul Deniz Yilmaz Yelvar
BACKGROUND: Postural control allows performance of daily and sports activities. The previous studies show that postural sway inceases in orthopaedic injuries such as osteoarthritis and total knee arthroplasty. OBJECTIVE: To compare postural sway, risk of falling and function between individuals with and without patellofemoral pain syndrome (PFS). METHODS: This study included 22 subjects with patellofemoral pain syndrome, age-matched pain-free 22 females serving as a control group...
June 30, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27331033/medial-patello-femoral-ligament-mpfl-reconstruction-using-suture-anchors-fixation-preliminary-results
#5
Filippo Calanna, Luca Pulici, Giulia Carimati, Alessandro Quaglia, Piero Volpi
PURPOSE: several surgical techniques have been described for the MPFL reconstruction, using many femoral and patellar fixation techniques and different grafts (autograft, allograft, synthetic). The goal of our study is to evaluate the safety and efficacy of MPFL reconstruction using Juggerknot™ (BIOMET, Warsaw, Indiana) suture anchors fixation with a clinical evaluation pre/post surgery of our patients with objective patellofemoral (PF) instability. METHODS: from January 2013 to March 2015, 19 patients underwent isolated MPFL reconstruction using Juggerknot™ (BIOMET, Warsaw, Indiana) suture anchors fixation...
January 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/26894660/reconstruction-of-medial-patello-femoral-ligament-comparison-of-two-surgical-techniques
#6
G Criscenti, C De Maria, E Sebastiani, M Tei, G Placella, A Speziali, G Vozzi, G Cerulli
The medial patello-femoral ligament is considered the most important passive patellar stabilizer and its proper functionality is essential for the patello-femoral joint stability. In this work, 18 human knees were randomly divided into two groups and reconstructed through two different surgical techniques: the "Through tunnel tendon" and the "Double converging tunnel" reconstructions. Subsequently, the samples were mechanically tested to evaluate the structural properties of reconstructed femur-MPFL-Patella complex (rFMPC)...
June 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/26873710/biomechanical-evaluation-of-medial-patello-femoral-ligament-reconstruction-comparison-between-a-double-bundle-converging-tunnels-technique-versus-a-single-bundle-technique
#7
G Placella, A Speziali, E Sebastiani, S Morello, M M Tei, G Cerulli
BACKGROUND: Several MPFL reconstructions are commonly performed for recurrent patellar dislocation, but misleading data are currently available in the literature on the ability of the different techniques to re-create a functioning ligament. MATERIALS AND METHODS: In this study, we showed the biomechanical properties of two different procedures for MPFL reconstruction using a natural orientation during uniaxial tensile testing. Eighteen fresh-frozen human knees were randomly assigned to two groups of nine each...
August 2016: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/26753845/analysis-of-the-effects-of-high-tibial-osteotomy-on-tibial-rotation
#8
Stefan Hinterwimmer, Matthias J Feucht, Jochen Paul, Chlodwig Kirchhoff, Martin Sauerschnig, Andreas B Imhoff, Knut Beitzel
PURPOSE: Limited literature reports on internal and external rotation of the distal fragment in the context of valgus open wedge (OW) high tibial osteotomy (HTO). In the authors clinical observation, the distal fragment was always rotated internally in relation to the proximal fragment by the end of the surgical procedure. The purpose was to evaluate the influence of valgus OW-HTO on post-operative tibial torsion. STUDY DESIGN: Prospective case series. METHODS: Fifty patients (10 female, 40 male; mean age 42...
September 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26726982/is-there-an-ideal-patellar-thickness-following-total-knee-arthroplasty
#9
REVIEW
Todd P Pierce, Julio J Jauregui, Jeffrey J Cherian, Randa K Elmallah, Steven F Harwin, Michael A Mont
Orthopedic surgeons resurface the patella during total knee arthroplasty to avoid complications such as pain, patello-femoral arthritis, and patellar maltracking and to reduce the risk for reoperation. However, many complications, such as decreased range of motion, increased fractures, and polyethylene wear, have been described with this procedure. One determinant when resurfacing a patella is the thickness of its cuts. This review aims to investigate the relationship between patellar thickness and outcome parameters such as range of motion, patient-reported outcomes, periprosthetic fractures, and reoperations...
January 2016: Orthopedics
https://www.readbyqxmd.com/read/26615591/unconstrained-total-knee-arthroplasty-in-significant-valgus-deformity-a-modified-surgical-technique-to-balance-the-knee-and-avoid-instability
#10
R Pagoti, S O'Brien, E Doran, D Beverland
PURPOSE: Correction of valgus deformity in total knee arthroplasty (TKA) is technically challenging and has produced variable results. A modified surgical technique involving adapting the distal femoral cut with minimal soft tissue release is proposed. The authors hypothesise that using this technique would result in satisfactory radiological and functional outcome. METHODS: The technique involves balancing the knee in extension by changing the distal femoral resection angle and confining soft tissue release to only the posterolateral capsule if required...
November 28, 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/26573904/quasi-linear-viscoelastic-properties-of-the-human-medial-patello-femoral-ligament
#11
G Criscenti, C De Maria, E Sebastiani, M Tei, G Placella, A Speziali, G Vozzi, G Cerulli
The evaluation of viscoelastic properties of human medial patello-femoral ligament is fundamental to understand its physiological function and contribution as stabilizer for the selection of the methods of repair and reconstruction and for the development of scaffolds with adequate mechanical properties. In this work, 12 human specimens were tested to evaluate the time- and history-dependent non linear viscoelastic properties of human medial patello-femoral ligament using the quasi-linear viscoelastic (QLV) theory formulated by Fung et al...
December 16, 2015: Journal of Biomechanics
https://www.readbyqxmd.com/read/26516437/the-comparison-of-neoprene-palumbo-and-genu-direxa-stable-orthosis-effects-on-pain-and-activity-of-daily-living-in-patients-with-patellofemoral-syndrome-a-randomized-blinded-clinical-trial
#12
Mohammad Sadegh Ghasemi, Naser Dehghan
BACKGROUND: Patellofemoral pain syndrome (PFPS) is one of the most common disorders of the knee. Conservative approaches, as well as surgery, can decrease pain and the syndrome's progress effectively. OBJECTIVE: The aim of this study was to determine the effectiveness of neoprene palumbo orthosis (NPO) and Genu direxa stable orthosis (GDSO) on pain and the activities of daily living (ADL). METHODS: Thirty patients (males, ages 18 to 40) participated in this randomized blinded clinical trial...
October 2015: Electronic Physician
https://www.readbyqxmd.com/read/26454357/material-and-structural-tensile-properties-of-the-human-medial-patello-femoral-ligament
#13
G Criscenti, C De Maria, E Sebastiani, M Tei, G Placella, A Speziali, G Vozzi, G Cerulli
The medial patellofemoral ligament (MPFL) is considered the most important passive patellar stabilizer and acts 50-60% of the force of the medial soft-tissue which restrains the lateralization of the patella between 0° and 30°. In this work, 24 human knees have been tested to evaluate the material properties of MPFL and to determine the structural behavior of femur-MPFL-Patella complex (FMPC). Particular attention was given to maintain the anatomical orientation between the patella and MPFL and to the evaluation of the elongation during the mechanical tests...
February 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/26443639/dynamic-measurement-of-patello-femoral-joint-alignment-using-weight-bearing-magnetic-resonance-imaging-wb-mri
#14
Silvia Mariani, Alice La Marra, Francesco Arrigoni, Stefano Necozione, Alessandra Splendiani, Ernesto Di Cesare, Antonio Barile, Carlo Masciocchi
OBJECTIVE: Aim of our work was to compare standard and weight-bearing WB-MRI to define their contribution in unmasking patello-femoral (PF) maltracking and to define what measurement of patellar alignment is the most reliable. METHODS: We prospectively collected 95 non consecutive patients, clinically divided into 2 groups: group A (the control group), including 20 patients (negative for patellar maltracking), and group B including 75 patients (positive for patellar maltracking)...
December 2015: European Journal of Radiology
https://www.readbyqxmd.com/read/26361442/effectiveness-of-fulkerson-osteotomy-with-femoral-nerve-stimulation-for-patients-with-severe-femoral-trochlear-dysplasia
#15
COMPARATIVE STUDY
D T Crebs, C A Anthony, P T McCunniff, M J Nieto, M W Beckert, J P Albright
BACKGROUND: Patients with femoral trochlear dysplasia are at risk for chronic recurrent patellofemoral dislocations, with extreme cases often requiring a surgical procedure. Anteromedialization of the tibial tubercle with intraoperative femoral nerve stimulation and concurrent medial patella-femoral ligament (MPFL) reconstruction is a previously reported method of maximizing patello-femoral congruency. We hypothesize the Fulkerson osteotomy with intraoperative femoral nerve stimulation and concurrent MPFL reconstruction in patients with severe trochlear dysplasia provides equivalent postoperative clinical outcomes to the same procedure in patients with low level trochlear dysplasia...
2015: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/26114565/-avoidance-of-patello-femoral-overstuffing
#16
H Graichen
Reconstruction of the patello-femoral compartment and by that avoidance of an overstuffing is one of the important steps for a successful TKA. A revision rate of around 15 % due to problems of the patello-femoral compartment demonstrates that this is not achieved in all cases. There can be many reasons for an overstuffing and also the symptoms can be very variable, showing sometimes a limited flexion, patello-femoral maltracking or anterior knee pain. Due to its relevance the following paper demonstrates the different reasons for a patello-femoral overstuffing...
June 2015: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/26111678/-iohexol-tracing-of-hyaluronic-acid-distribution-in-the-knee-joint-cavity-of-rabbits
#17
Yuqiang Luo, Bingquan Lin, Jun Xiao, Zhanjun Shi
OBJECTIVE: To investigate the distribution of hyaluronic acid (HA) with iohexol tracing in the knee joint cavity of rabbits using CT plain scan, three-dimensional reconstruction and Χ-ray and observe how different injection sites affect HA distribution. METHODS: Mixtures of HA and iohexol (tracer) were prepared that contained final iohexol concentrations of 2.5%, 5%, 10%, 20%, or 40%. The HA-iohexol mixtures (0.5 ml) were injected into rabbit knee joints, and the optimal iohexol concentration that allowed clear differentiation of the injected agents from the surrounding tissues was determined using dual-source CT plain scan and three-dimensional reconstruction technique...
June 2015: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/26040655/the-correlation-between-femoral-sulcus-morphology-and-osteoarthritic-changes-in-the-patello-femoral-joint
#18
Takanori Iriuchishima, Keinosuke Ryu, Tohru Murakami, Hiroshi Yorifuji
PURPOSE: The purpose of this study was to reveal the correlation between the type of lesion and the depth of osteoarthritic (OA) changes in the patello-femoral (PF) joint and its bony morphological characteristics using computed tomography (CT) data. METHODS: Eighty-seven cadaveric knees were included in this study with median age of 83 years (62-97). OA depth evaluation was performed following Outerbridge's classification. Patella OA lesions were classified macroscopically using Han's method: type (1) no or minimal lesion, type (2) medial facet lesion without involvement of the ridge, type (3) lateral facet lesion without involvement of the ridge, type (4) lesion involving the ridge only, type (5) medial facet lesion with involvement of the ridge, type (6) lateral facet lesion with involvement of the ridge, and type (7) global lesion...
June 4, 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/25995746/does-joint-line-elevation-after-revision-knee-arthroplasty-affect-tibio-femoral-kinematics-contact-pressure-or-collateral-ligament-lengths-an-in-vitro-analysis
#19
Jacek B Kowalczewski, Luc Labey, Yan Chevalier, Tomasz Okon, Bernardo Innocenti, Johan Bellemans
INTRODUCTION: Correct restoration of the joint line is generally considered as crucial when performing total knee arthroplasty (TKA). During revision knee arthroplasty however, elevation of the joint line occurs frequently. The general belief is that this negatively affects the clinical outcome, but the reasons are still not well understood. MATERIAL AND METHODS: In this cadaveric in vitro study the biomechanical consequences of joint line elevation were investigated using a previously validated cadaver model simulating active deep knee squats and passive flexion-extension cycles...
April 25, 2015: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/25940605/short-term-outcomes-of-robotically-assisted-patello-femoral-arthroplasty
#20
Ugur Turktas, Ahmet Piskin, Gary G Poehling
PURPOSE: The purpose of this study was to determine the outcomes in patients treated with robotically assisted patello-femoral arthroplasty (PFA). METHODS: This technique offers a safe, reliable, and reproducible way of obtaining correct implant positioning in patello-femoral arthroplasty, and as a result, reduces revision surgery due to implant malalignment. We evaluated 30 knees in 29 patients who underwent robotically assisted patello-femoral arthroplasty between June 2009 and May 2011...
May 2016: International Orthopaedics
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