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a Nerve had divided into three or more branches and measurement was made to the closest branch. b Measurement made at superficial branch of sartorius, rectus femoris, and capsule. c Small terminal branch of ascending branch of lateral circumflex femoral artery identified in three specimens. From Byrd JWT, Pappas JN, Pedley MJ. Hip arthroscopy: an anatomic study of portal placement and relationship to the extraarticular structures. Arthroscopy 1995;11:418-23; with permission.

a Nerve had divided into three or more branches and measurement was made to the closest branch. b Measurement made at superficial branch of sartorius, rectus femoris, and capsule. c Small terminal branch of ascending branch of lateral circumflex femoral artery identified in three specimens. From Byrd JWT, Pappas JN, Pedley MJ. Hip arthroscopy: an anatomic study of portal placement and relationship to the extraarticular structures. Arthroscopy 1995;11:418-23; with permission.

entry into the joint. Diagnostic and surgical arthroscopy is then achieved by interchanging the arthroscope and instruments between the three established portals. Use of both the 70° and 30° scopes provides optimal viewing, despite limited maneuverability within the joint (Fig. 6).

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