RADR 1411 Exam 3 Review (80 Questions) – Knee Positioning, Patella Projections, Joint Anatomy & CR Angles | 2026 – Radiologic Technology

This document contains a focused set of approximately 80 exam-style questions and verified answers for RADR 1411 Exam 3 (Chapter 6), emphasizing knee anatomy, joint classifications, and radiographic positioning techniques. It covers key anatomical structures such as the tibial plateau (articular facet), patellofemoral joint, and distal tibiofibular joint, along with clinical conditions like Osgood-Schlatter disease. The structured Q&A format supports efficient review and strong conceptual understanding for exams. The material provides in-depth coverage of knee imaging techniques, including AP, lateral, weight-bearing, patella, and specialized projections such as the Hughston method. It details technical factors such as SID, kVp ranges, grid usage, and patient positioning, along with precise central ray (CR) placement and angulation. For example, the tables on pages 2–4 outline CR angles (e.g., 5–7° cephalad for lateral knee and 10–15° for inferosuperior patella), which are critical for accurate joint visualization and diagnostic imaging. Additionally, the document highlights positioning adjustments based on patient body habitus, such as varying CR angles for thin, average, and thick patients. It also reinforces evaluation criteria for knee imaging, including joint space visualization and alignment, making it a clinically relevant and high-yield study resource. This resource is ideal for students enrolled in Radiologic Technology, Diagnostic Medical Imaging, or Radiography programs. It is particularly useful for courses such as RADR 1411 – Radiographic Procedures I, Extremity Imaging, or Positioning and Anatomy offered at universities, community colleges, and allied health institutions. It is especially beneficial for first-year radiography students preparing for exams, lab practicals, or positioning competency evaluations. The content aligns closely with standard textbooks such as Merrill’s Atlas of Radiographic Positioning and Procedures by Jeannean Hall Rollins and Radiographic Imaging and Exposure by Terri L. Fauber, making it an excellent supplementary study guide for mastering both theoretical knowledge and practical positioning skills. Keywords: knee positioning, patella projections, RADR 1411, tibial plateau, patellofemoral joint, CR angles knee, AP knee, lateral knee, weight bearing knee, hughston method, osgood schlatter disease, radiographic positioning, extremity imaging, radiography exam questions