Presentation
Normal adult knee.
Patient Data
Age: 35 years
Gender: Male
From the case:
Annotated normal tangential projection (knee)

- external cortical surface of patella
- patella
- medial facet of patella
- lateral facet of patella
- median patellar ridge
- femoropatellar joint
- medial trochlear ridge
- trochlear groove
- lateral trochlear ridge
Case Discussion
Normal knee annotated tangential projection (also known as skyline projection, sunrise view, sunset view, patellofemoral joint view, or Settegast’s view.)