Osteoarthritis (OA) is a progressive and disabling joint disease. It is one of the most frequently occurring health problems for middle-aged and older people. [1, 2] OA can occur in every synovial joint, but is most common in hip, knee, hand, foot and spine.  It is characterized by joint pain and limited function of the joint. In a synovial joint several structures can cause these clinical symptoms. The Kellgren and Lawrence (K&L) classification criteria are the most widely used radiographic classification criteria to identify and grade OA.
Objectives: To evaluate the role of High Resolution Ultrasonography in knee osteoarthritis.
Material and Methods: Fifty patients attending the outpatient orthopaedics department of our institute with unilateral or bilateral knee pain were included. 32 patients had bilateral symptomatic knee OA and 18 patients had unilateral symptomatic OA. All knees were subjected to radiographic examination and HRUS assessment.
Conclusion: HRUS plays a significant role in early diagnosis of knee osteoarthritis, as well as its progression and therapy monitoring. It is desirable as a quick and easy method of screening for articular cartilage abnormalities and extra-articular abnormalities. Its cost effectiveness, dynamic scanning capabilities and therapeutic guidance providing abilities make it valuable in all settings.