Athletic InjuriesPatellofemoral Pain SyndromePatellofemoral JointGaitPatellaFractures, BoneFracture HealingPatellar DislocationHip FracturesKnee JointFemoral FracturesSpinal FracturesGait Disorders, NeurologicPatellar LigamentFemurFracture Fixation, InternalFracture FixationFractures, ComminutedBiomechanical PhenomenaRadius FracturesOsteoporotic FracturesWounds and InjuriesFractures, SpontaneousRange of Motion, ArticularOsteoarthritis, KneeFractures, StressFemoral Neck FracturesUlna FracturesFracture Fixation, IntramedullaryKnee InjuriesRib FracturesSkull FracturesArthroplasty, Replacement, KneeAthletic TapeJoint InstabilityArthralgiaMandibular FracturesBrain InjuriesGait AtaxiaDislocationsBracesQuadriceps MuscleWeight-BearingOrthotic DevicesBone MalalignmentTooth FracturesSurgical TapeKnee Prosthesis