Osteoarthritis, KneeKnee JointKneeOsteoarthritisArthroplasty, Replacement, KneeKnee InjuriesKnee ProsthesisArthralgiaPainOsteoarthritis, HipCartilage, ArticularPain MeasurementMenisci, TibialRange of Motion, ArticularJointsPatellaTibiaWeight-BearingOsteophyteInjections, Intra-ArticularBone MalalignmentGaitPain ManagementBiomechanical PhenomenaAnterior Cruciate LigamentQuadriceps MuscleJoint InstabilitySeverity of Illness IndexJoint DiseasesSynovitisSynovial FluidArthroscopyPopliteal CystTreatment OutcomeSynovial MembraneMagnetic Resonance ImagingArthrographyMuscle StrengthMedial Collateral Ligament, KneeWalkingShoesHip JointCartilage DiseasesPatellofemoral JointFinger JointViscosupplementationDisability EvaluationDisease ProgressionFemurLigaments, ArticularHyaluronic AcidExercise TherapyAnkle JointKnee DislocationViscosupplementsCartilage Oligomeric Matrix ProteinMatrilin ProteinsRecovery of FunctionBone Marrow DiseasesCanesChronic PainFoot OrthosesChondrocytesFollow-Up StudiesStiflePosterior Cruciate LigamentPain, PostoperativeProprioceptionAnti-Inflammatory Agents, Non-SteroidalProspective StudiesCartilagePain ThresholdReproducibility of ResultsShort-Wave TherapyArthritis, RheumatoidOsteoarthritis, SpineJoint Deformities, AcquiredOrthotic DevicesCollagen Type IIChondrocalcinosisArthritis, ExperimentalActivities of Daily LivingHand JointsMud TherapyMuscle WeaknessArthrometry, ArticularQuestionnairesPatellar LigamentLongitudinal StudiesArthroplasty, Replacement, HipMovementPhysical Therapy ModalitiesBone CystsCohort StudiesPatellofemoral Pain SyndromeSingle-Blind MethodDouble-Blind MethodTorqueRisk FactorsTime Factors