title: Arthroscopic approach and anatomy of the hip.
abstract: BACKGROUND
  Hip arthroscopy has gained popularity among the orthopedic community and a precise assessment of indications, techniques and results is constantly brought on.
  
  
  METHODS
  In this chapter the principal standard entry portals for central and peripheral compartment are discussed. The description starts from the superficial landmarks for portals placement and continues with the deep layers. For each entry point an illustration of the main structures encountered is provided and the principal structures at risk for different portals are accurately examined. Articular anatomical description is carried out from the arthroscope point of view and sub-divided into central and peripheral compartment. The two compartments are systematically analyzed and the accessible articular areas for each portal explained. Moreover, some anatomical variations that can be found in the normal hip are reported.
  
  
  CONCLUSIONS
  The anatomical knowledge of the hip joint along with a precise notion of the structures encountered with the arthroscope is an essential requirement for a secure and successful surgery. Level of evidence: V.
authors.affiliation: School of Medicine, University of Turin, Turin, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Aprato
authors.affiliation: School of Medicine, University of Turin, Turin, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Giachino
authors.affiliation: School of Medicine, University of Turin, Turin, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Masse
keywords: anatomy; hip arthroscopy; hip portals