Mri knee protocols and planning indications for mri knee. Magnetic resonance imaging is particularly well suited for the medical evaluation of the musculoskeletal msk system including the knee, shoulder, ankle, wrist and elbow. The knee is a complex joint that flexes, extends, and twists slightly from side to side. A guide to evaluation and reporting is a wellwritten, uptodate book covering all imaging aspects of magnetic resonance mr imaging of the knee joint.
However, mri of the knee has a diagnostic role in patients with joint pain and symptoms such as locking, popping, or instability that suggest meniscal or ligamentous damage. Welcome to the hitachi medical systems america, inc. The authors intended audience is radiology residents, musculoskeletal fellows, and staff radiologists both. M internal rotation quadriceps all extension unclassi. The inferior lateral genicular artery courses between the fcl and the popliteus tendon. Ho bachelor of medicine, bachelor of surgery university of hong kong fellow, hong kong college of radiologists fellow, hong kong academy of medicine radiology realtime interface human sectional anatomy. Use the mouse scroll wheel to move the images up and down alternatively use the tiny arrows on both side of the image to move the images. It is typically used to help diagnose or evaluate pain, weakness, swelling or bleeding in and around the joint. Superiorly, it extends to the level of the crossing of the biceps.
This page presents a comprehensive series of labeled axial, sagittal and coronal images from a normal human brain magnetic resonance imaging exam. Normal mr imaging anatomy of the knee pdf free download. Magnetic resonance imaging mri knee magnetic resonance imaging mri of the knee uses a powerful magnetic field, radio waves and a computer to produce detailed pictures of the structures within the knee joint. This mri brain crosssectional anatomy tool serves as a reference atlas to guide radiologists and researchers in the accurate identification of the brain structures. Magnetic resonance imaging of the knee dr benjamin domb. Click on a link to get t1 coronal view t2fatsat axial view t2fatsat coronal view t2fatsat sagittal view. The stability of the posterolateral corner of the knee is provided by. The physician performing the mri interpretation must have a clear understanding and knowledge of the anatomy and pathophysiology relevant to the mri examination. The extensor mechanism consists of the quadriceps muscle and tendon, patella, patellar tendon, and patellar retinacula. Mri anatomy and anatomical variations of the knee semantic scholar. Acrsprssr practice parameter for the performance and. The written or electronic request for mri of the knee should provide sufficient information to demonstrate the. The multi planar anatomy of the knee was determined. Click on a link to get t1 coronal view t2fatsat axial view t2fatsat coronal view.
Normal radiographic anatomy of the knee radiology case. The semitendinosus tendon can be seen immediately posterior to the semimembranosus muscle. Background the knee is a complexed articulation characterized by the presence of. Several types of lesions may be expected to be observed in knee oa by mri imaging. This mri brain cross sectional anatomy tool is absolutely free to use. The knee is the meeting point of the femur thigh bone in the upper leg and the tibia shinbone in the. Stability of the joint is governed by a combination of static ligaments, dynamic muscular forces, meniscocapsular aponeurosis, bony topography, and joint load. Mri of the knee is highly accurate in evaluation of internal derangements of the knee.
Knowing major anatomical variations and technical artifact that may false images of meniscal and ligamentous injuries. This mri knee coronal cross sectional anatomy tool is absolutely free to use. Knee pathology meniscal pathology ligament injury cartilage lesions bony and tendinous lesions. It is the largest synovial joint in the body and allows flexion and extension of the leg as well as some rotation in the flexed position. Highresolution magnetic resonance imaging of the knee joint ajr. Background the knee anatomy is complex and can be difficult to understand especially in cross section mri. The fclbiceps femoris bursa is found lateral to the distal fcl, and insinuates anterior and anteromedial in relation to this ligament. Functionally, the knee comprises 2 articulationsthe patellofemoral and tibiofemoral. The smaller sartorius muscle is seen more medially with the gracilis tendon interposed. The authors goals were to provide a standardized evaluation and reporting of knee mr imaging. Trauma to the extensor mechanism of the knee, a common clinical problem, can be accurately evaluated with magnetic resonance mr imaging.
Normal anatomy of the knee ligaments, pathologic conditions, and postsurgical appearances of the anterior cruci. Normal anatomy and biomechanics of the knee fred flandry, md, facsw and gabriel hommel, md abstract. There is a wide variety of variant vascular anatomy and vascular pathology that can occur around the knee, including an aberrant anterior tibial artery, vascular trauma that occurs with knee dislocation, popliteal artery entrapment syndrome, popliteal artery aneurysm, popliteal vein thrombosis, cystic adventitial. Many static and dynamic internal derangements of the patellofemoral joint in these patients lead to various secondary mri findings. However, a variety of potential pitfalls in interpretation of abnormalities related to the knee have been identified, particularly in evaluation of the menisci, ligaments, and articular cartilage. Proximal attachment of posterior cruciate ligament j. Common indications include assessment of internal derangement, pain, and further investigation of a radiographic abnormality. An easily accessible multimedia program for teaching cross section mri anatomy of the knee in lecture style, enhanced by narration and supporting text in addition. Webmds knee anatomy page provides a detailed image and definition of the knee and its parts including ligaments, bones, and muscles. Mr imaging appearance of the extensor mechanism of the. This mri knee sagittal cross sectional anatomy tool is absolutely free to use. The test helps your doctor visualize the anatomy of your knee to determine the possible cause of your. Medial collateral ligament partially torn in this patient l.
Knee pain in young patients is a common indication for knee mri. Clinical features and management rotatory instability of the posterolateral corner of the knee is a complex and difficult clinical entity in terms of both diagnosis and treatment. Many excellent texts and atlases have been written to serve this. Knee osteoarthritis prevalence, risk factors, pathogenesis. It is designed for the use of physicians, radiologists, students and medical imaging professionals. Magnetic resonance imaging of the knee and correlation with. This article focuses on how to systematically approach. The presence of two mri findings concomitantly correlates with painful oa of the knee. Knowing the anatomy and the normal signal in mri of the different structures of the knee. Because of its excellent softtissue contrast, magnetic resonance imaging mri has proven very useful for identifying these important structures. To evaluate effectively an mri examination of a particular joint or region in the musculoskeletal system, it is essential to have at least a basic understanding of the normal mri anatomy of that region. The knee is the joint most commonly imaged with mri in the pediatric population.
Injuries such as anterior cruciate ligament, meniscus and rotator cuff tears are all easily diagnosed when there is a firm understanding and knowledge of human anatomy. Mri of the knee is often performed for presumed musculoskeletal conditions. Your doctor may order an mri scan if they suspect any abnormalities within your knee joint. This webpage presents the anatomical structures found on knee mri. The knee joint is a modified hinge joint between the femur, tibia and patella. Normal mri anatomy of the knee key points the semimembranosus muscle is the largest of the posteromedial muscles continuing inferiorly to this level. An mri of the knee of a healthy subject was performed in the 3 planes of space coronal, axial, sagittal commonly used in osteoarticular imaging, with two weightings most commonly used to explore the musculoskeletal pathology of the knee. This section of the website will explain how to plan for an mri knee scans, protocols for mri knee, how to position for mri knee and indications for mri knee.