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https://www.readbyqxmd.com/read/29246134/influence-of-the-anterior-notch-in-mobile-bearing-uka-on-patellofemoral-radiotracer-uptake-and-clinical-outcome
#1
Dietmar Dammerer, Michael Liebensteiner, Hannes Rochau, Christian Uprimny, Vinzenz Smekal, Ralf Rosenberger, Elvire Servien
BACKGROUND: Previous studies reported that in partial knee arthroplasty smooth transitions to the remaining native parts of the knee are important. However, in mobile-bearing unicondylar knee arthroplasty (UKA) it is mandatory to create an anterior osteochondral notch adjacent to the femoral component to get clearance for the anterior lip of the bearing in full knee extension. This notch is, however, part of the femoral trochlea. It was the aim of the study to test for a potential association between a) an obligatory anterior notch in mobile-bearing UKA located at the margin of the medial aspect of the femoral trochlea and b) postoperative patellofemoral joint (PFJ) bone remodelling and discomfort...
December 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29224897/foot-exercise-and-orthotics-more-effective-than-knee-exercise-in-pfj-pain
#2
EDITORIAL
Gordon S Waddington
No abstract text is available yet for this article.
January 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29221902/a-comparison-of-patellofemoral-cartilage-morphology-and-deformation-in-anterior-cruciate-ligament-deficient-versus-uninjured-knees
#3
Kwadwo A Owusu-Akyaw, Lauren N Heckelman, Hattie C Cutcliffe, E Grant Sutter, Zoë A Englander, Charles E Spritzer, William E Garrett, Louis E DeFrate
Anterior cruciate ligament (ACL) deficient patients have an increased rate of patellofemoral joint (PFJ) osteoarthritis (OA) as compared to the general population. Although the cause of post-injury OA is multi-factorial, alterations in joint biomechanics may predispose patients to cartilage degeneration. This study aimed to compare in vivo PFJ morphology and mechanics between ACL deficient and intact knees in subjects with unilateral ACL ruptures. Eight male subjects underwent baseline MRI scans of both knees...
November 27, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29209793/degenerative-changes-after-posterior-cruciate-ligament-reconstruction-are-irrespective-of-posterior-knee-stability-mri-based-long-term-results
#4
Clemens Gwinner, Andreas Weiler, Timm Denecke, Julian M M Rogasch, Heide Boeth, Tobias M Jung
INTRODUCTION: Posterior cruciate ligament reconstruction (PCLR) is advocated to prevent an early onset of osteoarthritis. We hypothesized that posterior instability after PCLR correlates with degenerative changes. MATERIALS AND METHODS: MRIs of 42 (12 female/30 male; 39 ± 9 years) patients were enrolled with a minimum 5-year follow-up (FFU) after PCLR. In addition, 25 contralateral and 15 follow-up MRIs (12 months after baseline) were performed. Degenerative changes were graded using WORMS...
December 6, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29173024/main-components-of-pomegranate-ellagic-acid-and-luteolin-inhibit-metastasis-of-ovarian-cancer-by-down-regulating-mmp2-and-mmp9
#5
Huidi Liu, Zheng Zeng, Siwen Wang, Ting Li, Emilio Mastriani, Qing-Hai Li, Hong-Xia Bao, Yu-Jie Zhou, Xiaoyu Wang, Yongfang Liu, Wei Liu, Sijing Hu, Shan Gao, Miao Yu, Yingying Qi, Zhihang Shen, Hongyue Wang, Tingting Gao, Lingqin Dong, Randal N Johnston, Shu-Lin Liu
Ovarian cancer is the third most common cancer in the female reproductive organs and epithelial ovarian cancer has the highest lethality of all gynecological cancers. Pomegranate fruit juice (PFJ) has been shown to inhibit the growth of several types of cancer other than ovarian cancer. In this study, we exposed the ovarian cancer cell line A2780 to PFJ and two of its components (ellagic acid and luteolin). MTT and wound healing assays demonstrated that all three treatments suppressed the proliferation and migration of the ovarian cancer cells...
November 27, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28861196/patellofemoral-joint-arthroplasty-early-results-and-functional-outcome-of-the-zimmer-gender-solutions-patello-femoral-joint-system
#6
Donald Osarumwense, Farhan Syed, Obi Nzeako, Segun Akilapa, Omer Zubair, Jon Waite
BACKGROUND: Improved knee prosthesis designs have led to an increase in the use of patellofemoral arthroplasty as a primary treatment option in recent times. We report the early results and outcomes of the Zimmer Gender Solutions Patello-Femoral Joint (PFJ) system used to treat isolated patellofemoral osteoarthritis (PFA). METHODS: We retrospectively reviewed and analysed data of patients who underwent PFJ replacement (PFJR) at our institution with a minimum follow-up of 2 years...
September 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28717066/a-heart-shaped-sleeve-simplifies-intramedullary-tibial-nail-insertion-when-using-the-suprapatellar-approach
#7
Kosuke Tajima, Chikako Shimizu, Soichiro Ohno, Yusho Nishida, Kazuhiko Udagawa, Junichi Sasaki
The suprapatellar approach for intramedullary tibial nailing has become widely accepted over the past decade. A round sleeve is passed beneath the patella to protect the surface of the patellofemoral joint (PFJ). However, the round sleeve cannot be easily stabilized in the PFJ because it does not conform to the shape of the patellar apex. Consequently, we produced a heart-shaped sleeve to simplify the insertion of the entry sleeve during the suprapatellar approach. Using the new sleeve, the following procedure is used: (1) make a longitudinal 4 cm skin incision proximal to the patella to reach the PFJ, (2) insert the guide pin manually to the ventral edge of the tibial plateau, (3) insert the cannulated trocar along the guide pin, (4) insert the heart-shaped sleeve along the cannulated trocar, (5) remove the cannulated trocar, (6) ream the entry point through the heart-shaped sleeve...
July 15, 2017: Keio Journal of Medicine
https://www.readbyqxmd.com/read/28652829/patellofemoral-pain-in-athletes
#8
REVIEW
Wolf Petersen, Ingo Rembitzki, Christian Liebau
Patellofemoral pain (PFP) is a frequent cause of anterior knee pain in athletes, which affects patients with and without structural patellofemoral joint (PFJ) damage. Most younger patients do not have any structural changes to the PFJ, such as an increased Q angle and a cartilage damage. This clinical entity is known as patellofemoral pain syndrome (PFPS). Older patients usually present with signs of patellofemoral osteoarthritis (PFOA). A key factor in PFPS development is dynamic valgus of the lower extremity, which leads to lateral patellar maltracking...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28606557/is-superolateral-hoffa-s-fat-pad-hyperintensity-a-marker-of-local-patellofemoral-joint-disease-the-most-study
#9
M Jarraya, A Guermazi, D T Felson, F W Roemer, M C Nevitt, J Torner, C E Lewis, J J Stefanik
PURPOSE: To determine the relation of superolateral Hoffa's fat pad (SHFP) hyperintensity to cartilage damage and bone marrow lesions (BMLs) in the patellofemoral joint (PFJ) and tibiofemoral joint (TFJ). METHODS: We used data from the 60 and 84-month study visits from the Multicenter Osteoarthritis (MOST) study. SHFP hyperintensity and Hoffa-synovitis were graded from 0 to 3. Cartilage damage and BMLs were scored in the PFJ and TFJ. Structural damage was defined as: any cartilage damage, full-thickness cartilage damage and any BML...
September 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28565811/severity-and-distribution-of-cartilage-damage-and-bone-marrow-edema-in-the-patellofemoral-and-tibiofemoral-joints-in-knee-osteoarthritis-determined-by-mri
#10
Baoming Dong, Yanliang Kong, Lei Zhang, Yongqian Qiang
The aim of the present study was to analyze the distribution and severity of cartilage damage (CD) and bone marrow edema (BME) of the patellofemoral and tibiofemoral joints (PFJ and TFJ, respectively) in patients with knee osteoarthritis (OA), and to determine whether a correlation exists between BME and CD in knee OA, using magnetic resonance imaging (MRI). Forty-five patients diagnosed with knee OA (KOA group) and 20 healthy individuals (control group) underwent sagittal multi-echo recalled gradient echo sequence scans, in addition to four conventional MR sequence scans...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28511465/digging-deeper-into-the-patello-femoral-joint-patello-femoral-composite-a-new-dimension-for-overstuffing-of-patello-femoral-joint
#11
Vikram Kishor Kandhari, Mohan M Desai, Surendar S Bava, Roshan N Wade
INTRODUCTION: Patello-femoral complications are the most common complications in postoperative Total Knee Arthroplasty (TKA) patients especially overstuffing of Patello - Femoral Joint (PFJ). So, to study the effects of overstuffing of PFJ in postoperative TKA patients we put forth a new dimension - "PATELLO - FEMORAL COMPOSITE (PFC)". This is the maximum distance between anterior cortical line of femur shaft and the anterior cortex of patella with knee in full extension. AIM: To calculate chances of overstuffing of PFJ in postoperative TKA patients and document the effect of overstuffing of PFJ on the passive knee Range of Motion (ROM) in post- op TKA patients...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28500391/anterior-referencing-of-tibial-slope-in-total-knee-arthroplasty-considerably-influences-knee-kinematics-a-musculoskeletal-simulation-study
#12
Marco A Marra, Marta Strzelczak, Petra J C Heesterbeek, Sebastiaan A W van de Groes, Dennis W Janssen, Bart F J M Koopman, Ate B Wymenga, Nico J J Verdonschot
PURPOSE: In total knee arthroplasty (TKA), the posterior tibial slope is not always reconstructed correctly, and the knee ligaments may become too tight in flexion. To release a tight flexion gap, surgeons can increase the posterior tibial slope using two surgical resection techniques: the anterior tibial cortex (ACR) or the centre of tibial plateau (CPR) referencing. It is not known how this choice affects the knee laxity and function during activities of daily living. The aim of this study was to investigate the effect of tibial slope on knee laxity, kinematics and forces during a squatting activity using computer simulation techniques...
May 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28460712/different-pain-responses-to-distinct-levels-of-physical-activity-in-women-with-patellofemoral-pain
#13
Ronaldo V Briani, Marcella F Pazzinatto, Danilo De Oliveira Silva, Fábio M Azevedo
BACKGROUND: Physical activity levels seem to play a role in patellofemoral pain (PFP); however, few studies have been conducted to confirm this hypothesis. OBJECTIVES: To determine the reported pain levels of women with and without PFP who maintain different levels of physical activity; to determine the capability of these levels to predict pain; and to test the capability of two stair-negotiation protocols, with and without external load, to equalize pain between groups...
March 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28455472/anterior-knee-pain-and-evidence-of-osteoarthritis-of-the-patellofemoral-joint-should-not-be-considered-contraindications-to-mobile-bearing-unicompartmental-knee-arthroplasty-a-15-year-follow-up
#14
T W Hamilton, H G Pandit, D G Maurer, S J Ostlere, C Jenkins, S J Mellon, C A F Dodd, D W Murray
AIMS: It is not clear whether anterior knee pain and osteoarthritis (OA) of the patellofemoral joint (PFJ) are contraindications to medial unicompartmental knee arthroplasty (UKA). Our aim was to investigate the long-term outcome of a consecutive series of patients, some of whom had anterior knee pain and PFJ OA managed with UKA. PATIENTS AND METHODS: We assessed the ten-year functional outcomes and 15-year implant survival of 805 knees (677 patients) following medial mobile-bearing UKA...
May 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28437567/people-with-patellofemoral-oa-walk-with-different-pelvic-and-hip-kinematics-compared-to-healthy-aged-matched-controls
#15
Kay M Crossley, Anthony G Schache, Hannah Ozturk, Jonathan Lentzos, Melissa Munanto, Marcus G Pandy
Objective, Patellofemoral joint (PFJ) osteoarthritis (OA) is common, yet little is known about how this condition influences lower-limb biomechanical function. This study compared pelvis and lower-limb kinematics in people with and without PFJOA., Methods, Sixty-nine participants (64% women, mean age 56±10 years) with anterior knee pain aggravated by PFJ loaded activities (stair ambulation, rising from sitting, squatting) and radiographic lateral PFJOA on skyline radiographs were compared with 18 controls (78% women, mean age 53±7 years) with no lower-limb pain or radiographic OA...
April 24, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28420082/can-early-rehabilitation-prevent-posttraumatic-osteoarthritis-in-the-patellofemoral-joint-after-anterior-cruciate-ligament-rupture-understanding-the-pathological-features
#16
Nai-Jen Chang, Ming-You Shie, Kuan-Wei Lee, Pei-Hsi Chou, Chih-Chan Lin, Chih-Jou Chu
Knee instability resulting from anterior cruciate ligament (ACL) rupture is a high-risk factor for posttraumatic osteoarthritis (PTOA) in the patellofemoral joint (PFJ). However, whether non-weight-bearing and weight-bearing treatments have chondroprotective effects remains unclear. Twenty-four adult New Zealand White male rabbits were employed in this study. All animals received ACL transection in the right knee and sham surgery in the left knee. The rabbits were randomly assigned to the following groups: (I) In the sedentary (SED) group, the rabbits (n = 6) were simply kept in their cage; (II) In the continuous passive motion (CPM) group, the rabbits (n = 6) performed CPM exercise for 7 days, starting from the first postoperative day; (III) In the active treadmill exercise (TRE) group, the rabbits (n = 6) performed TRE for 2 weeks; (IV) In the CPM + TRE group, the rabbits (n = 6) executed CPM exercise, followed by TRE...
April 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28361277/the-effect-of-a-dynamic-pcl-brace-on-patellofemoral-compartment-pressures-in-pcl-and-pcl-plc-deficient-knees
#17
Tyler Welch, Thomas Keller, Ruben Maldonado, Melodie Metzger, Karen Mohr, Ronald Kvitne
BACKGROUND: The natural history of posterior cruciate ligament (PCL) deficiency includes the development of arthrosis in the patellofemoral joint (PFJ). The purpose of this biomechanical study was to evaluate the hypothesis that dynamic bracing reduces PFJ pressures in PCL- and combined PCL/posterolateral corner (PLC)-deficient knees. STUDY DESIGN: Controlled Laboratory Study. METHODS: Eight fresh frozen cadaveric knees with intact cruciate and collateral ligaments were included...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28292715/footwear-characteristics-are-related-to-running-mechanics-in-runners-with-patellofemoral-pain
#18
Jean-Francois Esculier, Blaise Dubois, Laurent J Bouyer, Bradford J McFadyen, Jean-Sébastien Roy
Running footwear is known to influence step rate, foot inclination at foot strike, average vertical loading rate (VLR) and peak patellofemoral joint (PFJ) force. However, the association between the level of minimalism of running shoes and running mechanics, especially with regards to these relevant variables for runners with patellofemoral pain (PFP), has yet to be investigated. The objective of this study was to explore the relationship between the level of minimalism of running shoes and habitual running kinematics and kinetics in runners with PFP...
May 2017: Gait & Posture
https://www.readbyqxmd.com/read/28271370/inadequacy-of-computed-tomography-for-pre-operative-planning-of-patellofemoral-arthroplasty
#19
Mo Saffarini, Jacobus H Müller, Giuseppe La Barbera, Gerjon Hannink, Kyung Jin Cho, Cécile Toanen, David Dejour
PURPOSE: To evaluate the accuracy of preoperative planning for patellofemoral arthroplasty (PFA) by comparing: (1) virtual implant positioning simulated on pre-operative images versus (2) real implant positioning from post-operative images. METHODS: The authors prospectively studied 15 patients that received a PFJ implant (Tornier, Montbonnot France). A pre-operative planning software was established to determine the size and position of the trochlear component...
March 7, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28264631/effects-of-patellofemoral-taping-on-patellofemoral-joint-alignment-and-contact-area-during-weight-bearing
#20
Kai-Yu Ho, Ryan Epstein, Ron Garcia, Nicole Riley, Szu-Ping Lee
Study Design Controlled laboratory study. Background Although it has been theorized that patellofemoral joint (PFJ) taping can correct patellar malalignment, the effects of PFJ taping techniques on patellar alignment and contact area have not yet been studied during weight bearing. Objective To examine the effects of 2 taping approaches (Kinesio and McConnell) on PFJ alignment and contact area. Methods Fourteen female subjects with patellofemoral pain and PFJ malalignment participated. Each subject underwent a pretaping magnetic resonance imaging (MRI) scan session and 2 MRI scan sessions after the application of the 2 taping techniques, which aimed to correct lateral patellar displacement...
February 2017: Journal of Orthopaedic and Sports Physical Therapy
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