Ultrasound-guided interventional procedures in pain medicine: a review of anatomy, sonoanatomy, and procedures. Part V: knee joint.

Ultrasound-guided injection in pain medicine is emerging as a popular technique for pain intervention. It can be applied to the intra-articular injection of the knee joint. The first objective of this review was to describe and summarize the anatomy and sonoanatomy of the knee and associated structures relevant for intra-articular injection. The second objective was to examine the feasibility, accuracy, and effectiveness of injections as well as injection techniques.