OsteosarcomaBone NeoplasmsPrognosisOsteosarcoma, JuxtacorticalSurvival AnalysisTumor Markers, BiologicalSurvival RateFemoral NeoplasmsNeoplasm StagingDisease-Free SurvivalRetrospective StudiesCell Line, TumorKaplan-Meier EstimatePredictive Value of TestsTreatment OutcomeMultivariate AnalysisFollow-Up StudiesImmunohistochemistryNeoplasm Recurrence, LocalProportional Hazards ModelsGene Expression Regulation, NeoplasticLung NeoplasmsNeoplasm MetastasisAntineoplastic Combined Chemotherapy ProtocolsLymphatic MetastasisNeoplasm InvasivenessBreast NeoplasmsDoxorubicinLeg BonesTime FactorsCombined Modality TherapyAntineoplastic AgentsOsteoblastomaProspective StudiesMethotrexateTumor Cells, CulturedSarcoma, EwingDisease ProgressionChemotherapy, AdjuvantHumerusDog DiseasesRisk FactorsTissue Array AnalysisChondrosarcomaCell ProliferationKi-67 AntigenCisplatinOsteoblastsGene Expression ProfilingRNA, MessengerCohort StudiesNeoplasm ProteinsNeoadjuvant TherapyReverse Transcriptase Polymerase Chain ReactionAdenocarcinomaTumor Suppressor Protein p53SarcomaApoptosisImmunoenzyme TechniquesIfosfamideRisk AssessmentNeoplasm GradingAmputationBiological MarkersAge FactorsRecurrenceDNA, NeoplasmExtremitiesReceptor, erbB-2Carcinoma, Squamous CellSoft Tissue NeoplasmsMice, NudeOligonucleotide Array Sequence AnalysisCarcinomaRNA, Neoplasm