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patellar chondromalacia

Semra Duran, Mehtap Cavusoglu, Onur Kocadal, Bulent Sakman
This study aimed to compare trochlear morphology seen in magnetic resonance imaging between patients with chondromalacia patella and age-matched control patients without cartilage lesion. Trochlear morphology was evaluated using the lateral trochlear inclination, medial trochlear inclination, sulcus angle and trochlear angle on the axial magnetic resonance images. Consequently, an association between abnormal trochlear morphology and chondromalacia patella was identified in women. In particular, women with flattened lateral trochlea are at an increased risk of patellar cartilage structural damage...
September 28, 2016: Clinical Imaging
Ali Özgen, Neslihan Taşdelen, Zeynep Fırat
BACKGROUND: Chondromalacia patellae is a very common disorder. Although magnetic resonance imaging (MRI) is widely used to investigate patellar cartilage lesions, there is no descriptive MRI-based grading system for chondromalacia patellae. PURPOSE: To propose a new MRI grading system for chondromalacia patellae with corresponding high resolution images which might be useful in precisely reporting and comparing knee examinations in routine daily practice and used in predicting natural course and clinical outcome of the patellar cartilage lesions...
June 20, 2016: Acta Radiologica
Tuesday F Fisher, Brian R Waterman, Justin D Orr, Courtney A Holland, Julia Bader, Philip J Belmont
PURPOSE: To quantify rates of perioperative complications, secondary surgery, subjective pain relief, and knee-related medical separation in an active military population after a tibial tubercle osteotomy (TTO) for the primary indication of chondral pathology. METHODS: All active-duty service members undergoing TTO with a minimum of 2 years' follow-up were isolated from the Military Health System database. The exclusion criteria were patients with patellar instability, other periarticular osteotomy, and insufficient follow-up...
May 24, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Yong Wang, Jun-Ying Sun, Guo-Chun Zha
Objectives Anterior knee pain (AKP) is integral to the overall success of total knee arthroplasty (TKA) without patellar resurfacing. Numerous studies have evaluated various factors that may contribute to AKP, including patellofemoral design, surgical technique, characteristics of the patient, and degree of chondromalacia. This study aims to explore whether patients who received lateral retinacular release (LRR) plus circumpatellar electrocautery (CE) in TKA attain a low incidence of AKP and whether the LRR plus CE increases postoperative complications...
May 20, 2016: Journal of Knee Surgery
Ertugrul Aksahin, Cem Nuri Aktekin, Onur Kocadal, Semra Duran, Cüneyd Gunay, Defne Kaya, Onur Hapa, Murad Pepe
PURPOSE: The aims of this study were to evaluate sagittal plane alignment in patients with chondromalacia patella via magnetic resonance imaging (MRI), analyse the relationships between the location of the patellar cartilaginous lesions and sagittal alignment and finally investigate the relationships between the sagittal plane malalignment and patellofemoral loadings using by finite element analysis. METHODS: Fifty-one patients who were diagnosed with isolated modified Outerbridge grade 3-4 patellar chondromalacia based on MRI evaluation and 51 control subjects were evaluated...
March 31, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Daniel S Chan, Rafael Serrano, Rebecca Griffing, Barbara Steverson, Anthony Infante, David Watson, H Claude Sagi, Roy W Sanders
PURPOSE: The purpose of this OTA approved pilot study was to compare the clinical and functional outcomes of the knee joint after infra - versus supra patellar tibial nail insertion DESIGN:: Prospective, randomized, OTA sponsored, Level I study. SETTING: Level I trauma center METHODS:: After IRB approval, skeletally mature patients with OTA 42 tibial shaft fractures were randomized into either an infra-patellar (IP) or suprapatellar (SP) nail insertion group after informed consent was obtained...
November 25, 2015: Journal of Orthopaedic Trauma
Casey R Antholz, Jeffrey J Cherian, Randa K Elmallah, Julio J Jauregui, Todd P Pierce, Micael A Mont
Whether to resurface the patella during total knee arthroplasty (TKA) remains a controversial topic among orthopaedic surgeons, and we are still no closer to identifying which technique provides the best outcomes. Advocates for patellar resurfacing have adopted this technique in order to avoid the potential for post-operative anterior knee pain that may be associated with the need for future reoperations. However, reports have indicated that patellar resurfacing may be associated with increased complications such as patellar implant loosening, fracture, osteonecrosis, tendon injury, wear, and instability...
May 2015: Surgical Technology International
Claudio Mazzola, Davide Mantovani
Patellofemoral disorders can be classified according to specific criteria, and the most well-known classification systems are Insall's classification and Merchant's classification. In this work, after completion of an in-depth literature review, we will analyze the most frequent patellofemoral pathologies with the aim of determining the correct clinical-diagnostic-therapeutic course. Pathologies of greater clinical frequency will be examined in detail to provide the most relevant didactic scope. We will therefore address the following pathologies: excessive lateral patellar compression syndrome; patellar dislocations and subluxations; patellar chondromalacia; and patellofemoral osteoarthritis...
April 2013: Joints
Dawid Bączkowicz, Edyta Majorczyk
BACKGROUND: Chondromalacia, lateral patellar compression syndrome and osteoarthritis are common patellofemoral joint disorders leading to functional and/or structural disturbances in articular surfaces. The objective of the study was to evaluate their impact on joint motion quality via the vibroacoustic signal generated during joint movement analysis. METHODS: Seventy-three patients (30 with chondromalacia, 21 with lateral patellar compression syndrome, and 22 with osteoarthritis) and 32 healthy controls were tested during flexion/extension knee motion for vibroacoustic signals using an acceleration sensor...
2014: BMC Musculoskeletal Disorders
Chian-Her Lee, Chia-Chun Wu, Ru-Yu Pan, Hsien-Tsung Lu, Hsain-Chung Shen
PURPOSE: The purpose of this study was to investigate outcomes of surgical treatment in patients with symptomatic chronic patellar lateral subluxation with tilting. METHODS: Thirty-two patients (38 knees) underwent arthroscopic lateral release and mini-open advancement of medial retinacular flap for the treatment of symptomatic chronic patellar lateral subluxation with tilting with a mean follow-up of 52.0±11.4 months. The mean age at surgery was 24.7±8.8 years, and the duration of symptoms was 4...
October 2014: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Patellofemoral pain syndrome can be a difficult condition to manage effectively. The success rate of most treatment regimes has been poor and in the long term the condition frequently recurs. The author has developed a treatment programme which has a ninety-six percent success rate. Long term follow up of patients, after twelve months demonstrated that all patients reviewed have remained pain free. The programme involves two major components: a thorough understanding of the mechanics of the patellofemoral joint so that an adequate assessment of the patient's lower limb can be made, and context specific training of certain muscles which contribute to patellar alignment...
1986: Australian Journal of Physiotherapy
Stephen Thomas, David Rupiper, G Scott Stacy
The patellofemoral (PF) joint is a complex articulation, with interplay between the osseous and soft tissue structures to maintain the balance between knee mobility and stability. Disorders of the PF joint can be a source of anterior knee pain (AKP). In this article, radiographic and magnetic resonance imaging of the PF joint are reviewed, including normal anatomy, imaging techniques, and imaging-based measurements. Common imaging findings associated with AKP are reviewed, including symptomatic normal variants, tendinopathy, apophysitis, osteoarthritis, chondromalacia patella, trochlear dysplasia, excessive lateralization of tibial tuberosity, patellar maltracking, patellar dislocation and fractures, anterior bursitis, Morel-Lavallée effusions, and fat pad edema...
July 2014: Clinics in Sports Medicine
R R Betz, R Lonergan, R Patterson, J Litton, T Yucha, R Boal
A lateral retinacular release performed through a 2 ½-3 cm lateral parapatella incision can give rewarding results for patients with chondromalacia, degenerative joint disease, recurrent subluxation or recurrent dislocation of the patella. A retrospective review from August 1978 to December 1980 of 37 patients (42 knees) shows 83% excellent or satisfactory results, 17% unsatisfactory results with an average postoperative follow-up of 12.3 months. Preoperative pain was reduced in all but two patients; no patient was made worse by the procedure with respect to pain or function...
January 1, 1982: Orthopedics
Fernando Ruiz Santiago, Rocío Pozuelo Calvo, Julio Almansa López, Luis Guzmán Álvarez, María Del Mar Castellano García
OBJECTIVE: To study the correlation between the T2 relaxation times of the patellar cartilage and morphological MRI findings of chondromalacia. METHODS: This prospective study comprises 50 patients, 27 men and 23 women suffering of anterior knee pain (mean age: 29.7, SD 8.3 years; range: 16-45 years). MRI of 97 knees were performed in these patients at 1.5T magnet including sagittal T1, coronal intermediate, axial intermediate fat sat and T2 mapping. Chondromalacia was assessed using a modified version of Noyes classification...
June 2014: European Journal of Radiology
Burcu Kaya Tuna, Aslıhan Semiz-Oysu, Bilhan Pekar, Yasar Bukte, Alper Hayirlioglu
The relationship of patellofemoral congruency with chondromalacia patellae (CP) was retrospectively evaluated. Lateral patellar tilt angle (LPTA), sulcus angle (SA), trochlear depth (TD), and patella angle (PA) were measured at 301 knee magnetic resonance images and compared between groups with and without CP. In the CP group, LPTA and TD were significantly low (P<.01), SA was high (P<.01), while PA showed no difference (P>.05). The parameters were also compared between groups with mild and severe CP, and no significant difference was found (P>...
July 2014: Clinical Imaging
Ty K Subhawong, Rashmi S Thakkar, Abraham Padua, Aaron Flammang, Avneesh Chhabra, John A Carrino
OBJECTIVE: This study aimed to investigate whether patellofemoral T2 cartilage changes are associated with lateral patellofemoral friction syndrome (PFS), as indicated by an edema-like signal within the superolateral infrapatellar (Hoffa) fat pad. METHODS: In this institutional review board-approved retrospective study of 510 consecutive patients, 49 patients with 50 knee magnetic resonance imaging examinations demonstrating normal or low-grade patellofemoral cartilage abnormalities (whole-organ magnetic resonance imaging score [WORMS] score, ≤2) were included...
March 2014: Journal of Computer Assisted Tomography
Dawid Bączkowicz, Krzysztof Kręcisz
BACKGROUND. Disorders of the articular surfaces are associated with impaired quality of joint motion and joint play. Crepitations are the hallmark clinical sign. This paper aims to present the possibilities of using vibroacoustic signal analysis in assessing the function of articular surfaces in the course of disorders of the knee and shoulder. MATERIAL AND METHODS. The study involved 30 people, 10 for each of the following disorders: patellar chondromalacia (Ch), meniscal tears (Mc), and degenerative changes of the glenohumeral joint (GH)...
October 31, 2013: Ortopedia, Traumatologia, Rehabilitacja
Mark S Collins, Christin A Tiegs-Heiden, Michael J Stuart
OBJECTIVE: The femoral calcar is a constant anatomical structure within the proximal femur representing a condensation of bone trabeculae. It is our impression that a similar structure is present within the patella. The purpose of this retrospective study was to define the prevalence, appearance, location, and configuration of the patellar calcar on MRI examinations. MATERIALS AND METHODS: One hundred consecutive unenhanced knee MRIs were retrospectively reviewed by two readers who were blinded to the clinical indication...
February 2014: Skeletal Radiology
Francesco Leonardi, Fabrizio Rivera, Alessandra Zorzan, Syed Mohsin Ali
BACKGROUND: Torsional malalignment syndrome (TMS) is a well defined condition consisting of a combination of femoral antetorsion and tibial lateral torsion. The axis of knee motion is medially rotated. This may lead to patellofemoral malalignment with an increased Q angle and chondromalacia, patellar subluxation and dislocation. Conservative management is recommended in all but the most rare and severest cases. In these cases deformity correction requires osteotomies at two levels per limb...
June 2014: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
Maitreyee Nandi Kar, Abhijit Bhakta, Gopal Chandra Mondal, Maitreyi Bandyopadhyay, Chinmaya Kar, Sujit Narayan Nandi
Patellar height is one of the important parameter in patellar stability. Growth spurt or excessive physical strain can lead to high-riding patella or patella alta. But this is not yet proved. This study was mainly targeted at eliciting the influence of age on Insall-Salvati index, one of the important index to measure patellar height. As the present study is meant for measuring the patellar height separately in male and female, it is also to find out the effect of gender on patellar height if any. The study was been conducted in North Bengal Medical College and Hospital among 93 subjects covering both adult and adolescent age groups...
December 2012: Journal of the Indian Medical Association
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