This study perform to investigate the relationship between quadriceps femoris (QF) strength, QF thickness, femoral cartilage thickness, knee function, balance, kinesiophobia and gait of the patients with knee osteoarthritis.

Osteoarthritis (OA) is one of the most common chronic degenerative diseases in the world, which progresses slowly, can cause pain, stiffness and dysfunction, and reduces the quality of life.

OA is particularly common in weight-bearing joints such as the knee and the functional status of patients with OA is adversely affected various factors such as immobility due to pain, decrease in muscle strength and joint range of motion, etc.

In relation to this, walking difficulty and decrease in walking speed, balance problems and an increase in the risk of falling are a picture that can be encountered in the later stages of the disease.

The aim of this study is to investigate the relationship between QF strength, QF thickness, femoral cartilage thickness, knee function, balance, kinesiophobia and gait of the patients with knee OA.

Inclusion Criteria:

• Volunteer patients who applied to the Physical therapy and Rehabilitation department with knee pain

Exclusion Criteria:

• Individuals who have received intra-articular therapy for gonarthrosis in the last 6 months, who have undergone arthroscopic surgery, and who have additional pathologies in their lower extremities
• Individuals with physical, mental and/or psychological disorders that may affect participation in the study

Volunteer patients who applied to the Physical therapy and Rehabilitation department with knee pain