1. Measurement of Hip Contact Pressure During Arthroscopic Femoroacetabular Impingement Surgery 
Mitsunori Kaya, M.D. 
Arthroscopy Techniques 
Volume 6, Issue 3, Pages e525-e527 (June 2017)
DOI: /j.eats
Copyright © 2017 Arthroscopy Association of North America Terms and Conditions

2. Fig 1
Arthroscopic image of a left hip viewed through the anterolateral portal. Traction is released and the hip flexed approximately 90° to evaluate the peripheral compartment. Chondral damages are obvious in the distal anterior part of the femoral head (arrow).
Arthroscopy Techniques 2017 6, e525-e527DOI: ( /j.eats )
Copyright © 2017 Arthroscopy Association of North America Terms and Conditions

3. Fig 2
Arthroscopic image of a left hip viewed through the anterolateral portal showing a transducer (arrow) that is inserted 1 cm proximal from the acetabular edge just below the anterior inferior iliac spine of the pelvis and pressures are recorded with the hip at 0° of flexion in the neutral rotational position.
Arthroscopy Techniques 2017 6, e525-e527DOI: ( /j.eats )
Copyright © 2017 Arthroscopy Association of North America Terms and Conditions

4. Fig 3
Arthroscopic image of a left hip viewed through the anterolateral portal. The hip is flexed very slowly to 90° (arrow) and measurements are taken.
Arthroscopy Techniques 2017 6, e525-e527DOI: ( /j.eats )
Copyright © 2017 Arthroscopy Association of North America Terms and Conditions

5. Fig 4
Arthroscopic image of a left hip viewed through the anterolateral portal. Femoroplasty (arrow) is performed and the contact pressures are measured. The hip is flexed very slowly and measurements are taken with the hip at 0° of flexion in the neutral rotational position to evaluate the effect of the decompression of the cam deformities.
Arthroscopy Techniques 2017 6, e525-e527DOI: ( /j.eats )
Copyright © 2017 Arthroscopy Association of North America Terms and Conditions