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https://www.readbyqxmd.com/read/29777422/patellofemoral-cartilage-repair
#1
REVIEW
Alexandre Barbieri Mestriner, Jakob Ackermann, Andreas H Gomoll
PURPOSE OF REVIEW: This review provides an overview of well-established and newly developed cartilage repair techniques for cartilage defects in the patellofemoral joint (PFJ). An algorithm will be presented for approaching cartilage defects considering the distinct anatomy of both the patellar and trochlear articular surfaces. RECENT FINDINGS: Recent studies on cartilage repair in the PFJ have demonstrated improved outcomes in an attempt to delay or obviate the need for arthroplasty, and improve symptoms in young patients...
May 18, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29775910/hip-and-patellofemoral-joint-loading-during-gait-are-increased-in-children-with-idiopathic-torsional-deformities
#2
Elyse Passmore, H Kerr Graham, Marcus G Pandy, Morgan Sangeux
BACKGROUND: Torsional deformities of the femur and tibia are associated with gait impairments and joint pain. Several studies have investigated these gait deviations in children with cerebral palsy. However, relatively little is known about gait deviations in children with idiopathic torsion and debate ensues about the management of these patients. RESEARCH QUESTION: What are the effects of idiopathic increased femoral neck anteversion and external tibial torsion on lower-limb kinematics, kinetics and joint loading during gait in children and adolescents...
May 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29760787/inverted-rearfoot-posture-in-subjects-with-coexisting-patellofemoral-osteoarthritis-in-medial-knee-osteoarthritis-an-exploratory-study
#3
Hirotaka Iijima, Hiroshi Ohi, Naoto Fukutani, Tomoki Aoyama, Eishi Kaneda, Kaoru Abe, Masaki Takahashi, Shuichi Matsuda
Background: While abnormal rearfoot posture and its relationship to patellofemoral (PF) pain has been thoroughly discussed in the literature, its relationship to patellofemoral osteoarthritis (PFOA) has not been determined. This study aimed to examine whether rearfoot posture is associated with a higher prevalence of radiographic PFOA in a compartment-specific manner in patients with medial tibiofemoral osteoarthritis (TFOA). Methods: Participants from orthopedic clinics ( n  = 68, age 56-90 years, 75...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29752650/traumatic-knee-injury-correlation-of-radiographic-effusion-size-with-the-presence-of-internal-derangement-on-magnetic-resonance-imaging
#4
Nathan D Cecava, Shane Dieckman, Kevin P Banks, Liem T Mansfield
PURPOSE: Traumatic knee injury is a common clinical presentation. However, knee internal derangement often goes undiagnosed on physical exam. The authors hypothesize that patients with suprapatellar joint effusion greater than 10 mm anteroposterior diameter on lateral radiograph have a high likelihood of knee internal derangement on magnetic resonance imaging. MATERIALS AND METHODS: A retrospective review of knee radiographs and magnetic resonance imaging in 198 patients age 18-40 years with acute knee injury was performed...
May 8, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29752638/avoiding-complications-with-mpfl-reconstruction
#5
REVIEW
Marvin K Smith, Brian C Werner, David R Diduch
PURPOSE OF REVIEW: To discuss the potentially significant complications associated with medial patellofemoral ligament (MPFL) reconstruction. Additionally, to review the most current and relevant literature with an emphasis on avoiding these potential complications. RECENT FINDINGS: Multiple cadaveric studies have characterized the anatomy of the MPFL and the related morphologic abnormalities that contribute to recurrent lateral patellar instability. Such abnormalities include patella alta, excessive tibial tubercle to trochlear grove (TT-TG) distance, trochlear dysplasia, and malalignment...
May 12, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29752499/intraoperative-fluoroscopy-during-mpfl-reconstruction-improves-the-accuracy-of-the-femoral-tunnel-position
#6
P Koenen, S Shafizadeh, T R Pfeiffer, A Wafaisade, B Bouillon, A C Kanakamedala, V Jaecker
PURPOSE: Reconstruction of the medial patellofemoral ligament (MPFL) has been established as standard of care for patellofemoral instability. An anatomic femoral tunnel position has been shown to be a prerequisite for restoration of patellofemoral stability and biomechanics. However, the incidence of malpositioning of the femoral tunnel during MPFL reconstruction continues to be notable. Palpation of anatomic landmarks and intraoperative fluoroscopy are the two primary techniques for tunnel placement...
May 11, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29750318/return-to-play-after-patellar-stabilization
#7
REVIEW
Seth L Sherman, Daniel P Deasis, Andrew J Garrone, Elliott E Voss, Harvey A Oliver
PURPOSE OF REVIEW: The purpose of this review is to evaluate the existing literature regarding return to play (RTP) and return to prior performance (RPP) following patellar stabilization surgery. It will also discuss suggested guidelines regarding RTP, and finally, to encourage future patellofemoral instability research to report and publish results of RTP rates using standardized RTP guidelines. RECENT FINDINGS: There is a lack of validation and universal adoption of standardized RTP guidelines...
May 10, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29748692/clinics-in-diagnostic-imaging-185
#8
Ying Xin Candice Leong, Poh Lye Paul See
A 20-year-old National Serviceman presented with left knee pain and swelling after training for his physical fitness test. Lateral knee radiography and magnetic resonance (MR) imaging showed patellar tendon-lateral femoral condyle friction syndrome (PT-LFCFS), on a background of patella alta and patellar malalignment. The patient was treated non-operatively with a course of physiotherapy and given advice on rest and activity modification. PT-LFCFS is a less well-recognised but important cause of anterior knee pain and represents an entity in a spectrum of disorders related to patellofemoral instability...
April 2018: Singapore Medical Journal
https://www.readbyqxmd.com/read/29747079/mechanical-effects-of-medial-and-lateral-wedged-orthoses-during-running
#9
Jonathan Sinclair
OBJECTIVE: The aim of the current investigation was to examine the effects of orthoses with 5° medial and lateral wedges on knee joint kinetics during the stance phase of running. DESIGN: Repeated measures. SETTING: Laboratory. PARTICIPANTS: Twelve recreational runners. OUTCOME MEASUREMENTS: Twelve male participants ran over a force platform at 4.0 m/s in three different conditions (medial orthotic, lateral orthotic and no-orthotic)...
May 3, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29746389/effect-of-sand-on-knee-load-during-a-single-leg-jump-task-implications-for-injury-prevention-and-rehabilitation-programs
#10
Mark C Richardson, Sinead Murphy, Tom Macpherson, Bryan English, Iain Spears, Paul Chesterton
Richardson, MC, Murphy, S, Macpherson, T, English, B, Spears, I, and Chesterton, P. Effect of sand on knee load during a single-leg jump task: implications for injury prevention and rehabilitation programs. J Strength Cond Res XX(X): 000-000, 2018-The purpose of the study was to determine potential differences in landing strategies and subsequent joint loads at the knee (knee abduction moment [KAM], anterior-posterior [AP] tibial translation, and total knee shear force) when jumping onto sand and firm ground from both a level surface and a 30-cm height...
May 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29742532/osteoarticular-allograft-transplantation-of-the-trochlear-groove-for-trochlear-dysplasia-a-case-report
#11
Nicholas N DePhillipo, Mitchell I Kennedy, Zachary S Aman, Gilbert Moatshe, Robert F LaPrade
CASE: A 21-year-old woman with recurrent lateral patellar instability caused by severe trochlear dysplasia and concomitant grade-IV trochlear chondromalacia was treated successfully with osteoarticular allograft transplantation of the entire trochlear groove. CONCLUSION: The treatment of chronic lateral patellar instability caused by trochlear dysplasia can be challenging. When nonoperative treatment is unsuccessful, a sulcus-deepening trochleoplasty may be indicated...
May 9, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29741911/long-term-comparison-of-semitendinosus-and-gracilis-tendon-versus-patellar-tendon-autografts-for-anterior-cruciate-ligament-reconstruction-a-17-year-follow-up-of-a-randomized-controlled-trial
#12
Matjaz Sajovic, Domen Stropnik, Katja Skaza
BACKGROUND: Short-term and mid-term differences between hamstring and patellar tendon autografts for anterior cruciate ligament (ACL) reconstruction are well documented. Systematic reviews highlight the lack of long-term results between the two grafts. HYPOTHESIS: Seventeen years after ACL reconstruction, no difference will be found in functional outcome, quality of life, and graft failure between patients with patellar tendon (PT) or semitendinosus and gracilis tendon (STG) autografts; however, a significant difference will be seen in the prevalence of osteoarthritis...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29736872/use-of-tt-pcl-versus-tt-tg
#13
REVIEW
Jacqueline M Brady, Adam S Rosencrans, Beth E Shubin Stein
PURPOSE OF REVIEW: The tibial tubercle-to-trochlear groove (TT-TG) distance and tibial tubercle-to-posterior cruciate ligament (TT-PCL) distance have both been proposed for use in the evaluation of patients with patellofemoral instability. RECENT FINDINGS: While the TT-TG value may be confounded by several factors, including age, gender, body mass index, and varying degrees of knee flexion on cross-sectional imaging, recent literature supports its utility for differentiation of patients with and without patellofemoral instability, and stratification of patients with and without coronal malalignment...
May 8, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29734499/blood-perfusion-of-patellar-bone-measured-by-dynamic-contrast-enhanced-mri-in-patients-with-patellofemoral-pain-a-case-control-study
#14
Rianne A van der Heijden, Dirk H J Poot, Melek Ekinci, Gyula Kotek, Peter L J van Veldhoven, Stefan Klein, Jan A N Verhaar, Gabriel P Krestin, Sita M A Bierma-Zeinstra, Marienke van Middelkoop, Edwin H G Oei
BACKGROUND: Altered perfusion might play an important role in the pathophysiology of patellofemoral pain (PFP), a common knee complaint with unclear pathophysiology. PURPOSE: To investigate differences in dynamic contrast-enhanced (DCE)-MRI perfusion parameters between patients with PFP and healthy control subjects. POPULATION/SUBJECTS/PHANTOM/SPECIMEN/ANIMAL MODEL: Thirty-five adult patients with PFP and 44 healthy adult control subjects...
May 7, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29730214/patella-height-correlates-with-trochlear-dysplasia-a-computed-tomography-image-analysis
#15
Peter Wilhelm Ferlic, Armin Runer, Dietmar Dammerer, Jürgen Wansch, Wolfgang Hackl, Michael Christian Liebensteiner
PURPOSE: The aim of this study was to investigate the position of the patella relative to the trochlea for a possible correlation with radiologic parameters characterizing the form of the trochlea. METHODS: The computed tomography scans of 36 cases with patellofemoral instability and 30 without (mean age, 24.7 ± 6.8 years) were studied. The height of the patella relative to the trochlea was evaluated as the distance between the axial slice where the patella (P) showed its widest diameter, as the patella at this level has the greatest potential to form the trochlea, and the proximal entrance of the femoral trochlea (TE)...
May 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29729758/editorial-commentary-cell-based-therapy-for-treatment-of-chondral-lesions-of-the-patellofemoral-joint-using-particulated-juvenile-chondrocytes
#16
EDITORIAL
Samuel K Tabet
The potential of cell-based therapies to fill articular cartilage defects is no longer a "pipe dream." Filling an articular cartilage defect with at least a "mixed hyaline cartilage" repair is no longer a question. The task at hand is somehow refining and defining the when, where, what, and how of the cartilage-growing procedures. The new ideas emerging are reflected in the recent literature, and all ideas regarding the specifics of these cartilage techniques and their outcomes should be welcomed...
May 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29728862/the-medial-patellofemoral-complex
#17
REVIEW
Alexander E Loeb, Miho J Tanaka
PURPOSE OF REVIEW: The purpose of this review is to describe the current understanding of the medial patellofemoral complex, including recent anatomic advances, evaluation of indications for reconstruction with concomitant pathology, and surgical reconstruction techniques. RECENT FINDINGS: Recent advances in our understanding of MPFC anatomy have found that there are fibers that insert onto the deep quadriceps tendon as well as the patella, thus earning the name "medial patellofemoral complex" to allow for the variability in its anatomy...
May 4, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29724252/synthetic-versus-autologous-reconstruction-syn-var-of-the-medial-patellofemoral-ligament-a-study-protocol-for-a-randomised-controlled-trial
#18
Adam Tucker, Sam McMahon, Bronwyn McArdle, Bridgeen Rutherford, Danny Acton
BACKGROUND: Recurrent patellar instability incidence is 5.8/100,000 population, and recurrent dislocations are reported in the range of 15-80%. Recurrent instability is multifactorial and can be associated with disorder of limb alignment, osseous development, congruity of the patella in the trochlea and soft tissue static and dynamic constraints. The multifactorial aetiology makes management challenging, and a lack studies in a heterogeneous population with robust clinical outcomes compounds this further...
May 3, 2018: Trials
https://www.readbyqxmd.com/read/29723872/knee-osteoarthritis-after-arthroscopic-partial-meniscectomy-prevalence-and-progression-of-radiographic-changes-after-5-to-12-years-compared-with-contralateral-knee
#19
Umile Giuseppe Longo, Mauro Ciuffreda, Vincenzo Candela, Giacomo Rizzello, Valerio D'Andrea, Nicholas Mannering, Alessandra Berton, Giuseppe Salvatore, Vincenzo Denaro
The purpose of this study was to study the clinical and radiographic changes in the knee after arthroscopic partial meniscectomy (APM) at a long-term follow-up compared with the contralateral knee. We assessed 57 patients (38 males and 19 females) with pre- and postoperative weight-bearing radiography with a follow-up ranging from 5.1 to 12.1 years (mean: 8.1) to analyze prevalence and progression of knee osteoarthritis (OA) after APM. We stratified patients according to body mass index (BMI), type of lesion (degenerative vs...
May 3, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29723036/patellar-redislocation-rates-and-clinical-outcomes-after-medial-patellofemoral-ligament-reconstruction-suture-anchor-versus-double-transpatellar-tunnel-fixation
#20
Jae-Won Heo, Kyung-Han Ro, Dae-Hee Lee
BACKGROUND: Few studies to date have compared clinical outcomes in patients who have undergone medial patellofemoral ligament (MPFL) reconstruction using the suture anchor and double transpatellar tunnel fixation methods. This meta-analysis therefore compared the clinical results, including the patellar redislocation rate and improvement in functional scores, of suture anchor and double transpatellar tunnel fixation. HYPOTHESIS: The recurrence rate and improvement in functional outcomes after surgery would be similar using the suture anchor and double transpatellar tunnel fixation methods...
May 1, 2018: American Journal of Sports Medicine
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