Quadriceps MuscleTendonsTendon InjuriesPatellar LigamentPatellaRuptureKneeKnee InjuriesPatellofemoral Pain SyndromeAchilles TendonKnee JointRupture, SpontaneousAzygos VeinThighTendon TransferMuscle StrengthTendinopathyMuscle WeaknessMuscle, SkeletalIsometric ContractionTorqueFemoral NerveBiomechanical PhenomenaAnterior Cruciate LigamentMuscle FatigueMuscle ContractionMuscle Strength DynamometerElectromyographyContraceptive Agents, FemaleRange of Motion, ArticularPerceptual ClosureLegIntrauterine DevicesVena Cava, InferiorTreatment OutcomeMusclesTime FactorsWeight-BearingElectric Stimulation TherapyLigamentsRotator CuffOsteoarthritis, KneeExerciseTensile StrengthGaitMuscular AtrophyWeight LiftingWithholding TreatmentPhysical Conditioning, HumanJoint InstabilityStress, MechanicalReflex, StretchReconstructive Surgical ProceduresH-ReflexCadaverCircumcision, FemaleAthletic InjuriesPhysical EnduranceExercise TherapySitus InversusFollow-Up StudiesPatellofemoral JointMuscular DiseasesContraceptionLigaments, ArticularAnkle JointOrthopedic ProceduresIntrauterine Devices, CopperAnterior Cruciate Ligament ReconstructionArthroplasty, Replacement, KneeRecovery of FunctionMusculoskeletal Physiological PhenomenaDesogestrelPatient DropoutsProspective StudiesElectric StimulationHeterotaxy SyndromeTenosynovitisIntrauterine Device ExpulsionPosterior Tibial Tendon DysfunctionCzechoslovakiaHydrarthrosisProprioceptionRecurrenceTenotomyContraceptives, OralBone-Patellar Tendon-Bone GraftingGestalt TheoryRetrospective StudiesFinger InjuriesPatient ComplianceSuture TechniquesMovementContraception BehaviorElectroconvulsive Therapy6-MercaptopurineAnalysis of VarianceMagnetic Resonance ImagingPhysical ExertionAsparaginase