In patients with knee pain, the cartilage thickness measurement of the knee joint will be measured from 3 points by ultrasound. At the same time, Quadriceps and Hamstring muscle thickness measurements of the patients will be made from the midpoints where the muscle thickness is the highest.

In patients without knee pain, the cartilage thickness measurement of the knee joint will be measured from 3 points by ultrasound. At the same time, Quadriceps and Hamstring muscle thickness measurements of the patients will be made from the midpoints where the muscle thickness is the highest.

In patients with or without knee pain, the cartilage thickness measurement of the knee joint will be measured from 3 points by ultrasound. At the same time, Quadriceps and Hamstring muscle thickness measurements of the patients will be made from the midpoints where the muscle thickness is the highest.

Tibial cartilage thickness will be visualized by ultrasound with the knee held in 30 degrees of flexion, and 3 measurements will be taken from the medial, lateral and midline.

The quadriceps muscle thickness will be measured by determining the midpoint between the SIAS and the patella while the patient is lying in the supine position. Hamstring muscle thickness will be measured at the intersection of a line drawn at 60% distal between the greater trochanter and the outer femoral condyle, and at the midline of the popliteal fossa, with the patient lying on the prone. These 2 measurements will be proportional to each other.