Role of Magnetic Resonance Imaging in Study of the Patellofemoral Joint Morphological Abnormalities Predisposing to Patellar Instability

Objectives: The Patellofemoral joint (PFJ) is a complex joint structure with high functional and biomechanical requirements. The purpose of this study is to evaluate cause of patella-femoral joint instability with in-depth evaluation of influence of anatomical risk factors (AF), measurements and anatomical relationships of the patellofemoral joint and various pathologies causing medial patellofemoral ligament (MPFL) injury that contributes to the patellar maltracking using 1.5 Tesla magnetic resonance imaging. Materials and Methods: The present prospective study is carried out at department of radiology, shri M P Shah Medical College, Jamnagar. This is study of total 50 patients carried out in 12-month duration from July 2019 to June 2020, in which 50 patients aged between 8 - 68 years selected as study group presented with complaint symptoms of patellofemoral instability, knee pain and maltracking were examined and identified by an orthopaedic surgeon. Patients with the clinical suspicion of a PFJ maltracking were selected for subsequent MRI examination. Results: The age distribution in our study was in range of 8 years to 68 years with maximum population within 31 to 40 years range, 66 % were male and 34 % female. Their trochlear depth, sulcal angle, trochlear facet asymmetry, lateral inclination angle was found abnormal in 18 cases (36%), 8 (16%) showed patellar alta and 7 (14%) patella baja. Lateralization of patella (> 6 mm) was noted in 18 patients (36%), Medial patellofemoral ligament injuries were seen in 16 (32%) patients on MRI and kissing contusion 10 (20%) patients. A detailed understanding of the anatomy and pathology of the anterior knee compartment is essential for proper imaging interpretation and treatment management. Conclusion: Magnetic resonance (MR) imaging has been established as the method of choice, showing high accuracy in patellofemoral joint abnormalities. The present study aims to explore the role of MR imaging in diagnosing the various disorders located in anterior compartment of knee. Keywords: Joint instability, Patellofemoral joint, MPFL, MR imaging/diagnosis.

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STUDY ON THE PATELLOFEMORAL JOINT USING MAGNETIC RESONANCE IMAGING: MORPHOLOGICAL VARIATION OF THE MEDIAL PATELLOFEMORAL LIGAMENT

Revista Brasileira de Ortopedia (English Edition) ◽

10.1016/s2255-4971(15)30087-2 ◽

2012 ◽

Vol 47 (2) ◽

pp. 204-209

Author(s):

Alfredo dos Santos Netto ◽

Marcelo Botelho Soares de Brito ◽

Fabrício Roberto Severino ◽

Leila Rodrigues Andrade Campos ◽

Marcelo Astolfi Caetano Nico ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Morphological Variation ◽

Patellofemoral Joint ◽

Medial Patellofemoral Ligament ◽

Resonance Imaging

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The role of magnetic resonance imaging in the evaluation of patellofemoral joint diseases

Türk Ortopedi ve Travmatoloji Birliği Derneği ◽

10.5606/totbid.dergisi.2012.42 ◽

2012 ◽

Vol 11 (4) ◽

pp. 302-313

Author(s):

Gökçen Çobanoğlu

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Patellofemoral Joint ◽

Joint Diseases ◽

Resonance Imaging

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Magnetic Resonance Imaging Evaluation of Patellofemoral Joint

Journal of Nepal Health Research Council ◽

10.33314/jnhrc.v19i1.3063 ◽

2021 ◽

Vol 19 (1) ◽

pp. 122-126

Author(s):

Kapil Adhikari ◽

Mukesh Kumar Gupta ◽

Karun Devkota ◽

Pramod Baral ◽

Sapana Koirala

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Patellofemoral Joint ◽

Patellar Instability ◽

Patellofemoral Instability ◽

Predisposing Factors ◽

Joint Effusion ◽

Ligament Injury ◽

Trochlear Groove ◽

Resonance Imaging

Background: Patellofemoral pain is the leading cause of knee pain in young adults. Magnetic resonance imaging plays an important role in early diagnosis of patellofemoral joint pathology. This study was carried out to evaluate the patellofemoral joint using magnetic imaging resonance and describe various predisposing factors for patellofemoral instability. Methods: The study was carried in Department of Radiology, BPKIHS over a period of six months from February 2020 to August 2020. All patients with clinical diagnosis of patellar instability were included and Magnetic resonance imaging was done using standard knee protocol and findings were noted on structured proforma. Analysis was done using statistical package for the social sciences version 20 applying simple descriptive statistical methods.Results: A total of 60 patients who underwent MRI knee were analyzed, out of which 28(46.7%) patients were male while 32(53.3%) patients were female. 44 patients (58.3%) had various predisposing factors for patellar instability. The commonest predisposing factor was patellar subluxation (73.3%) followed by abnormal trochlear groove angle (58.3%) and patellar translation (increased tibia tubercle trochlear groove distance) (53.3%). Various MRI findings in our study were bone contusion (28 cases,46.7%), joint effusion (36 cases,60%), medial patellofemoral ligament injury (11cases ,18.3%), erosion of patellar cartilage (5 cases,8.3%), femoral cartilage erosion (3 cases,5%),loose bodies (2 cases,3.3%), subchondral edema (3 cases,5%) and meniscus injury (18 cases,30%).Conclusions: Magnetic resonance imaging is not only useful in assessing lesions of the bone, cartilage and ligaments of patellofemoral joint but also enables detection of various predisposing factors for patellofemoral instability.Keywords: Magnetic resonance imaging; patellofemoral instability; patellofemoral joint

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