PostureBackPatient PositioningHip JointHipArthroplasty, Replacement, HipOsteoarthritis, HipHip FracturesHip ProsthesisHip DislocationHip Dislocation, CongenitalSupine PositionHip InjuriesBiomechanical PhenomenaPostural BalanceInterior Design and FurnishingsHuman EngineeringIschiumSedentary LifestyleMovementSpine