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Patellofemoral joint

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https://www.readbyqxmd.com/read/27909143/interobserver-and-intraobserver-reliability-of-clinical-assessments-in-knee-osteoarthritis
#1
Nasimah Maricar, Michael J Callaghan, Matthew J Parkes, David T Felson, Terence W O'Neill
OBJECTIVE: Clinical examination of the knee is subject to measurement error. The aim of this analysis was to determine interobserver and intraobserver reliability of commonly used clinical tests in patients with knee osteoarthritis (OA). METHODS: We studied subjects with symptomatic knee OA who were participants in an open-label clinical trial of intraarticular steroid therapy. Following standardization of the clinical test procedures, 2 clinicians assessed 25 subjects independently at the same visit, and the same clinician assessed 88 subjects over an interval period of 2-10 weeks; in both cases prior to the steroid intervention...
December 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27904793/current-concepts-in-treatment-of-patellofemoral-osteochondritis-dissecans
#2
Chris Juneau, Russ Paine, Eric Chicas, Emily Gardner, Lane Bailey, James McDermott
: Identification, protection, and management of patellofemoral articular cartilage lesions continue to remain on the forefront of sports medicine rehabilitation. Due to high-level compression forces that are applied through the patellofemoral (PF) joint, managing articular cartilage lesions is challenging for sports medicine specialists. Articular cartilage damage may exist in a wide spectrum of injuries ranging from small, single areas of focal damage to wide spread osteoarthritis involving large chondral regions...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904792/current-concepts-and-treatment-of-patellofemoral-compressive-issues
#3
Michael J Mullaney, Takumi Fukunaga
Patellofemoral disorders, commonly encountered in sports and orthopedic rehabilitation settings, may result from dysfunction in patellofemoral joint compression. Osseous and soft tissue factors, as well as the mechanical interaction of the two, contribute to increased patellofemoral compression and pain. Treatment of patellofemoral compressive issues is based on identification of contributory impairments. Use of reliable tests and measures is essential in detecting impairments in hip flexor, quadriceps, iliotibial band, hamstrings, and gastrocnemius flexibility, as well as in joint mobility, myofascial restrictions, and proximal muscle weakness...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904791/current-concepts-in-biomechanical-interventions-for-patellofemoral-pain
#4
Richard W Willy, Erik P Meira
: Patellofemoral pain (PFP) has historically been a complex and enigmatic issue. Many of the factors thought to relate to PFP remain after patients' symptoms have resolved making their clinical importance difficult to determine. The tissue homeostasis model proposed by Dye in 2005 can assist with understanding and implementing biomechanical interventions for PFP. Under this model, the goal of interventions for PFP should be to re-establish patellofemoral joint (PFJ) homeostasis through a temporary alteration of load to the offended tissue, followed by incrementally restoring the envelope of function to the baseline level or higher...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904788/examination-of-the-patellofemoral-joint
#5
Robert C Manske, George J Davies
Patellofemoral pain is one of the leading causes of knee pain in athletes. The many causes of patellofemoral pain make diagnosis unpredictable and examination and treatment difficult. This clinical commentary discusses a detailed physical examination routine for the patient with patellofemoral pain. Critically listening and obtaining a detailed medical history followed by a clearly structured physical examination will allow the physical therapist to diagnose most forms of patellofemoral pain. This clinical commentary goes one step further by suggesting an examination scheme and order in which it should be performed during the examination process...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904787/biomechanics-and-pathomechanics-of-the-patellofemoral-joint
#6
Janice K Loudon
The patellofemoral joint is a joint that can be an area of concern for athletes of various sports and ages. The joint is somewhat complex with multiple contact points and numerous tissues that attach to the patella. Joint forces are variable and depend on the degree of knee flexion and whether the foot is in contact with the ground. The sports medicine specialist must have a good working knowledge of the anatomy and biomechanics of the patellofemoral joint in order to treat it effectively.
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27894177/variability-of-measurement-of-patellofemoral-indices-with-knee-flexion-and-quadriceps-contraction-an-mri-based-anatomical-study
#7
Edward Laugharne, Navi Bali, Sanjay Purushothamdas, Faris Almallah, Rik Kundra
Purpose: The purpose of this study was to investigate the impact of varying knee flexion and quadriceps activity on patellofemoral indices measured on magnetic resonance imaging (MRI). Materials and Methods: MRI of the knee was performed in 20 patients for indications other than patellar or patellofemoral pathology. Axial and sagittal sequences were performed in full extension of the knee with the quadriceps relaxed, full extension of the knee with the quadriceps contracted, 30° flexion of the knee with the quadriceps relaxed, and 30° flexion with the quadriceps contracted...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27894172/the-spect-ct-evaluation-of-compartmental-changes-after-open-wedge-high-tibial-osteotomy
#8
Tae Won Kim, Byung Kag Kim, Dong Whan Kim, Jae Ang Sim, Beom Koo Lee, Yong Seuk Lee
Purpose: The purpose of this study was to evaluate compartmental changes using combined single-photon emission computerized tomography and conventional computerized tomography (SPECT/CT) after open wedge high tibial osteotomy (OWHTO) for providing clinical guidance for proper correction. Materials and Methods: Analysis was performed using SPECT/CT from around 1 year after surgery on 22 patients who underwent OWHTO. Postoperative mechanical axis was measured and classified into 3 groups: group I (varus), group II (0°-3° valgus), and group III (>3° valgus)...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27891054/patellofemoral-joint-arthroplasty-our-experience-in-isolated-patellofemoral-and-bicompartmental-arthritic-knees
#9
L Sabatini, M Schirò, F Atzori, G Ferrero, A Massè
INTRODUCTION: Isolated patellofemoral (PF) arthritis is rare, and there is no complete agreement about the best surgical treatment. The operative treatments are total knee arthroplasty and patellofemoral replacement (PFR). The incidence of many early complications of PF arthroplasty has decreased with the introduction of newer designs. Nowadays, the main cause of revision surgery is the progression of tibiofemoral osteoarthritis. In the past, PF arthroplasty was contraindicated in patients with evidence of osteoarthritis or pain in medial or lateral tibiofemoral compartments...
2016: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27884141/normal-patellofemoral-kinematic-patterns-during-daily-activities-in-dogs
#10
Erica J Moore, Stanley E Kim, Scott A Banks, Antonio Pozzi, Jason D Coggeshall, Stephen C Jones
BACKGROUND: Patellar abnormalities are a common cause of pain and lameness in dogs; however, in vivo the relative motion between the femur and patella in dogs is not well described. The objective of this study was to define normal in vivo sagittal plane patellofemoral kinematics in three axes of motion using non-invasive methods. We hypothesized patellofemoral alignment in the sagittal plane would tightly correlate with the femorotibial flexion angle. Six healthy dogs without orthopedic disease underwent computed tomography (CT) of their hind limbs to create 3-D models of the patella and femur...
November 25, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27884055/the-association-of-forefoot-varus-deformity-with-patellofemoral-cartilage-damage-in-older-adult-cadavers
#11
Rebecca S Lufler, Joshua J Stefanik, Jingbo Niu, F Kip Sawyer, Todd M Hoagland, K Douglas Gross
INTRODUCTION: Forefoot alignment may contribute to patellofemoral joint (PFJ) osteoarthritis (OA) via its influence on the closed chain kinematics of the lower limb. The purpose of this cadaveric study was to investigate the relationship between forefoot varus and ipsilateral cartilage damage in the medial and lateral PFJ. MATERIALS AND METHODS: Forefoot alignment measurements were obtained from the feet of 25 cadavers (n=50). Cartilage damage in the medial and lateral PFJ of each knee was scored using the Outerbridge scale...
November 24, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27847840/the-effect-of-patellofemoral-pain-syndrome-on-gait-parameters-a-literature-review
#12
REVIEW
Mokhtar Arazpour, Fateme Bahramian, Atefeh Abutorabi, Seyed Taghi Nourbakhsh, Ardeshir Alidousti, Hamidreza Aslani
Patellofemoral pain syndrome (PFPS) is one of the most frequent causes of anterior knee pain in adolescents and adults. This disorder can have a big effect on patients' ability and quality of life and gait. This review included all articles published during 1990 to 2016. An extensive literature search was performed in databases of Science Direct, Google Scholar, PubMed and ISI Web of Knowledge using OR, AND, NOT between the selected keywords. Finally, 16 articles were selected from final evaluation. In PFPS subjects, there was lower gait velocity, decreased cadence, and reduced knee extensor moment in the loading response and terminal stance, delayed peak rear foot eversion during gait and greater hip adduction compared to healthy subjects, while for hip rotation, there was controversy in studies...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27844041/chondral-lesions-in-the-patellofemoral-joint-in-mri-intra-individual-comparison-of-short-tau-inversion-recovery-sequence-stir-with-2d-multiple-echo-data-image-combination-sequence-medic
#13
Boris Bodelle, Wolfgang Luboldt, Julian L Wichmann, Sebastian Fischer, Thomas J Vogl, Martin Beeres
PURPOSE: To determine the value of the 2D multiple-echo data image combination (MEDIC) sequence relative to the short-tau inversion recovery (STIR) sequence regarding the depiction of chondral lesions in the patellofemoral joint. MATERIALS AND METHODS: During a period of 6 month patients with acute pain at the anterior aspect of the knee, joint effusion and suspected chondral lesion defect in the patellofemoral joint underwent MRI including axial MEDIC and STIR imaging...
2016: European Journal of Radiology Open
https://www.readbyqxmd.com/read/27818975/effect-of-muscle-contractions-on-cartilage-morphological-and-functional-magnetic-resonance-imaging-evaluation-of-the-knee-after-spinal-cord-injury
#14
Marco Kawamura Demange, Camilo Partezani Helito, Paulo Victor Partezani Helito, Felipe Ferreira de Souza, Riccardo Gomes Gobbi, Alexandre Fogaça Cristante
OBJECTIVE: To evaluate the effect of complete absence of muscle contractions on normal human cartilage in the presence of joint motion. METHODS: Patients with complete acute spinal cord injuries were enrolled. All patients underwent magnetic resonance imaging (MRI) on both knees as soon as their medical condition was stable and at six months after the primary lesion. All patients received rehabilitation treatment that included lower-limb passive motion exercises twice a day...
September 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/27814666/trunk-and-shank-position-influences-patellofemoral-joint-stress-of-the-lead-and-trail-limb-during-the-forward-lunge-exercise
#15
Cory L Hofmann, Derek T Holyoak, Paul M Juris
Study Design Controlled laboratory study; Repeated measures design. Background The effects of trunk and shank position on patellofemoral joint stress of the lead limb has been well studied, however the effects on the trail limb are not well understood. Objectives To test the hypothesis that trunk and shank position influence patellofemoral joint stress of both limbs during the forward lunge exercise. Methods Patellofemoral kinetics were quantified from 18 healthy participants performing the lunge exercise with different combinations of trunk and shank position (vertical or forward)...
November 4, 2016: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/27813019/knee-donor-site-morbidity-after-mosaicplasty-a-systematic-review
#16
REVIEW
Renato Andrade, Sebastiano Vasta, Rogério Pereira, Hélder Pereira, Rocco Papalia, Mustafa Karahan, J Miguel Oliveira, Rui L Reis, João Espregueira-Mendes
BACKGROUND: Mosaicplasty has been associated with good short- to long-term results. Nevertheless, the osteochondral harvesting is restricted to the donor-site area available and it may lead to significant donor-site morbidity. PURPOSE: Provide an overview of donor-site morbidity associated with harvesting of osteochondral plugs from the knee joint in mosaicplasty procedure. METHODS: Comprehensive search using Pubmed, Cochrane Library, SPORTDiscus and CINAHL databases was carried out through 10(th) October of 2016...
December 2016: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/27811513/patellofemoral-pain-and-instability-in-adolescent-athletes
#17
Matthew Bessette, Paul Saluan
Injuries and disorders of the patellofemoral joint in the adolescent athlete can encompass a wide spectrum of symptomatology and pathology. Anterior knee pain is a common presenting symptom in sports medicine clinics, and can have numerous underlying etiologies. This activity-related pain may be the manifestation of enthesopathy, tendinopathy, fat pad impingement, or numerous other conditions, but is more commonly related to more subtle skeletal and muscular imbalances. Treatment is typically nonoperative in nature, and excellent results are reported with physical therapy...
December 2016: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/27729289/association-of-baseline-knee-sagittal-dynamic-joint-stiffness-during-gait-and-2-year-patellofemoral-cartilage-damage-worsening-in-knee-osteoarthritis
#18
Alison H Chang, Joan S Chmiel, Orit Almagor, Ali Guermazi, Pottumarthi V Prasad, Kirsten C Moisio, Laura Belisle, Yunhui Zhang, Karen Hayes, Leena Sharma
OBJECTIVE: Knee sagittal dynamic joint stiffness (DJS) describes the biomechanical interaction between change in external knee flexion moment and flexion angular excursion during gait. In theory, greater DJS may particularly stress the patellofemoral (PF) compartment and thereby contribute to PF osteoarthritis (OA) worsening. We hypothesized that greater baseline knee sagittal DJS is associated with PF cartilage damage worsening 2 years later. METHODS: Participants all had OA in at least one knee...
October 8, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27720514/do-changes-in-patellofemoral-joint-offset-lead-to-adverse-outcomes-in-total-knee-arthroplasty-with-patellar-resurfacing-a-radiographic-review
#19
Jacob Matz, James L Howard, David J Morden, Steven J MacDonald, Matthew G Teeter, Brent A Lanting
BACKGROUND: Patellofemoral joint biomechanics contribute to anterior knee pain, instability, and dysfunction following total knee arthroplasty (TKA). Information about specific factors leading to anterior knee pain and dysfunction is currently limited. Changes in patellofemoral joint offset (PFO) refers to a mismatch between the preoperative and postoperative anteroposterior geometry of the patellofemoral joint. It remains unclear whether these changes lead to adverse outcomes in TKA...
September 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27714438/high-mid-term-revision-rate-after-treatment-of-large-full-thickness-cartilage-lesions-and-oa-in-the-patellofemoral-joint-using-a-large-inlay-resurfacing-prosthesis-hemicap-wave%C3%A2
#20
Jens Ole Laursen
PURPOSE: The HemiCAP-Wave® implant for the patellofemoral resurfacing treatment of large cartilage lesions and osteoarthritis (OA) was introduced in 2009. The outcome of a prospective cohort study of 18 patients with large trochlea lesions or isolated OA treated with the HemiCAP-Wave® implant is presented with up to a 6-year survival rate, and hypothesised short-to mid-term reduced pain and improved function. METHODS: Indication for treatment with the HemiCAP-Wave® implant was a symptomatic, large cartilage lesion in trochlea demonstrated by MRI or arthroscopy, which was ICRS grades 3-4 and larger than 4 cm(2)...
October 6, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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