Introduction Tumors involving the knee can be subdivided into osseous and soft tissue neoplasms, with either benign or malignant histology. This chapter describes the patient demographics and multimodality imaging characteristics of the most common tumors about the knee, organized by…
Total knee arthroplasty (TKA) results in improvement in overall quality of life in more than 90% of patients. This remarkable success and factors such as an aging population have led to a dramatic increase in the number of procedures performed…
Imaging of the Extensor Mechanism The extensor mechanism of the knee plays an important role in normal lower extremity function. It is a complex of interconnected structures in the anterior knee that includes the quadriceps muscle group, quadriceps tendon, patella,…
Introduction The posteromedial corner of the knee (PMC) is a significant anatomic structure that is as important as the posterolateral corner in multiligamentous injuries. Even though it is easily seen on modern high-field magnetic resonance (MR) imaging systems, it is…
Introduction The lateral supporting structures, including the posterolateral corner and iliotibial band, are important for knee stability and injuries to these structures are more common than historically recognized. Using magnetic resonance imaging (MRI) exams in patients presenting with acute knee…
Synovium Introduction It is important for the surgeon to understand the principles for imaging the synovial compartments and articular cartilage of the knee. This chapter summarizes the anatomy, normal variations, pathologic conditions, and the strengths and weaknesses of the available…
Noncontrast magnetic resonance imaging (MRI) is standard of care imaging in the posttraumatic knee with clinical findings suggestive of ligamentous injury. MRI readily delineates injuries of the cruciate ligaments and offers a distinct advantage in preventing unnecessary arthroscopy by assessing…
Introduction Meniscal tears are among the most common knee injuries. Abnormal biomechanics after a meniscal injury expose the underlying articular cartilage to increased axial and sheer stress, leading to articular cartilage lesions and early osteoarthritis (OA). The choice of treatment…
Diagnosis and Imaging Protocols Radiography Trauma to the knee is a relatively common injury, accounting for a significant number of visits to emergency rooms, urgicenters, and orthopedic offices. However, not all of these knee injuries will present as fractures. When…
Radiography Applications Radiographs are the workhorse of knee imaging. Almost any symptom or sign may be initially evaluated with an x-ray. Radiographs provide useful information across the entire spectrum of knee pathology, including congenital deformities, arthritis, trauma, oncology, sports injuries,…