EnoxaparinHematomaHematoma, Epidural, CranialHematoma, SubduralHematoma, Subdural, ChronicHematoma, Subdural, AcuteAnticoagulantsHematoma, Epidural, SpinalHematoma, Subdural, IntracranialInjectionsHeparinHematoma, Subdural, SpinalVenous ThromboembolismHemorrhageInjections, SubcutaneousFactor XaFibrinolytic AgentsHeparin, Low-Molecular-WeightCerebral HemorrhageTrephiningInjections, IntravenousThromboembolismVenous ThrombosisTreatment OutcomeTomography, X-Ray ComputedCraniotomyPartial Thromboplastin TimeInjections, IntramuscularNadroparinSubdural SpaceIntracranial HemorrhagesThiophenesInjections, IntralesionalPulmonary EmbolismAngina, UnstableDouble-Blind MethodBlood CoagulationTime FactorsSkull FracturesPostoperative ComplicationsDalteparinInjections, Intra-ArticularThrombophlebitisIntracranial Hemorrhage, TraumaticWarfarinProspective StudiesCerebral Hemorrhage, TraumaticTolmetinPlatelet Glycoprotein GPIIb-IIIa ComplexMyocardial InfarctionDrug Therapy, CombinationPlatelet Aggregation InhibitorsPyridonesRecurrenceAcute DiseaseInjections, IntraperitonealNeurosurgeryDura MaterBasal Ganglia HemorrhageCraniocerebral TraumaPostoperative HemorrhageDose-Response Relationship, DrugAntithrombinsGlasgow Coma ScaleNeurosurgical ProceduresRectus AbdominisMagnetic Resonance ImagingInjections, IntraventricularInjections, Intra-Arterial