Patellofemoral Pain SyndromePatellofemoral JointPatellaPatellar DislocationSyndromeKnee JointPatellar LigamentPainFemurOsteoarthritis, KneeBiomechanical PhenomenaPain MeasurementPain ManagementArthralgiaRange of Motion, ArticularAthletic TapeJoint InstabilityArthroplasty, Replacement, KneeChronic PainQuadriceps MuscleSurgical TapeKnee InjuriesBracesCartilage DiseasesKnee ProsthesisPain ThresholdBone MalalignmentCartilage, ArticularPain, PostoperativeJoint DiseasesWeight-BearingChondromalacia PatellaeBack PainLow Back PainArthroplastyDislocationsDown SyndromeAbdominal PainMetabolic Syndrome XMagnetic Resonance ImagingOrthotic DevicesTreatment OutcomeKneeNeck PainPain, IntractableTibiaHipTorsoBone Diseases, DevelopmentalPelvic PainPosterior Cruciate LigamentReconstructive Surgical ProceduresPain PerceptionFacial PainRunningOsteotomyRotationArthroscopyCadaverTorqueOrthopedic ProceduresAcute PainPain, ReferredOsteoarthritisMedial Collateral Ligament, KneeNephrotic SyndromeMuscle StrengthFollow-Up StudiesGenu ValgumPhysical Therapy ModalitiesSjogren's SyndromeFluoroscopyProspective StudiesAnterior Cruciate LigamentExercise TherapyShoulder PainHip JointMuscle WeaknessPressureThighSeverity of Illness IndexLigaments, ArticularFootStress, MechanicalMusculoskeletal PainMenisci, TibialGaitMovementTurner SyndromeProsthesis DesignBone-Patellar Tendon-Bone GraftingGenu VarumFemoral NerveReproducibility of ResultsAbnormalities, MultipleMyelodysplastic SyndromesCushing SyndromeSingle-Blind MethodAcute Coronary SyndromeComplex Regional Pain Syndromes