Ischiofemoral Space Decompression Through Posterolateral Approach: Cutting Block Technique  Elizabeth A. Howse, M.D., Sandeep Mannava, M.D., Ph.D., Cüneyt Tamam, M.D., Hal D. Martin, D.O., Miriam A. Bredella, M.D., Allston J. Stubbs, M.D., M.B.A.  Arthroscopy Techniques  Volume 3, Issue 6, Pages e661-e665 (December 2014) DOI: 10.1016/j.eats.2014.08.003 Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 1 (A) Arrows demonstrate before and after boney decompression of lesser trochanter on anterior posterior pelvis. (B) Arrows demonstrate before and after boney decompression of lesser trochanter on frog-lateral anterior posterior pelvis. Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 2 Axial fat-suppressed T2-weighted magnetic resonance image showing narrowing of bilateral ischiofemoral spaces with right-sided edema of quadratus femoris muscle (arrow), corresponding to site of patient's symptoms. Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 3 Arrow represents anterior posterior fluoroscopic guided anesthetic injection localized with radio-opaque dye. Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 4 Intraoperative fluoroscopic image showing lesser trochanter impinging on ischial tuberosity. Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 5 Location of proximal (camera) and distal (burr) peritrochanteric portals to access ischiofemoral space in a right hip. The lightning bolt symbol indicates the location of the superior gluteal nerve (approximately 4 cm from the tip of the trochanter). (GT, greater trochanter.) Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 6 Relation of sciatic nerve to quadratus femoris muscle (QFM) in a right hip. Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions

Fig 7 Subperiosteal resection of lesser trochanter (LT). The burr is on the lesser trochanter as displayed in the fluoroscopic image (inset). Arthroscopy Techniques 2014 3, e661-e665DOI: (10.1016/j.eats.2014.08.003) Copyright © 2015 Arthroscopy Association of North America Terms and Conditions