Osgood-Schlatter disease can cause a painful, bony bump on the shinbone just below the knee. It usually occurs in children and adolescents ...COVID-19:Advice,updatesandvaccineoptionsWeareopenforsafein-personcare.Learnmore:MayoClinicfactsaboutcoronavirusdisease2019(COVID-19)OurCOVID-19patientandvisitorguidelines,plustrustedhealthinformationLateston COVID-19vaccination bysite:ArizonapatientvaccinationupdatesArizona,FloridapatientvaccinationupdatesFlorida,RochesterpatientvaccinationupdatesRochesterandMayoClinicHealthSystempatientvaccinationupdatesMCHSSkiptositenavigationSkiptoContentThiscontentdoesnothaveanEnglishversion.ThiscontentdoesnothaveanArabicversion.SectionsforOsgood-SchlatterdiseaseSymptoms&causesDiagnosis&treatmentDoctors&departmentsPrintOverviewOsgood-Schlatterdiseasecancauseapainful,bonybumpontheshinbonejustbelowtheknee.Itusuallyoccursinchildrenandadolescentsexperiencinggrowthspurtsduringpuberty.Osgood-Schlatterdiseaseoccursmostofteninchildrenwhoparticipateinsportsthatinvolverunning,jumpingandswiftchangesofdirection—suchassoccer,basketball,figureskatingandballet.Whiletheconditionwasoncemorecommoninboys,thegendergaphasnarrowedasmoregirlshavebecomeinvolvedwithsports.Osgood-Schlatterdiseasetypicallyoccursinboysages12to14andgirlsages10to13.Thedifferenceisbecausegirlsenterpubertyearlierthandoboys.Theconditionusuallyresolvesonitsown,oncethechild'sbonesstopgrowing.Products&ServicesBook:MayoClinicFamilyHealthBook,5thEditionMayoClinicSportsMedicineShowmoreproductsfromMayoClinicSymptomsKneepainandswellingjustbelowthekneecaparethemainindicatorsofOsgood-Schlatterdisease.Painusuallyworsensduringcertainactivities,suchasrunning,kneelingandjumping,andeaseswithrest.Theconditionusuallyoccursinjustoneknee,butitcanaffectbothknees.Thediscomfortcanlastfromweekstomonthsandcanrecuruntilyourchildstopsgrowing.WhentoseeadoctorCallyourchild'sdoctorifkneepaininterfereswithyourchild'sabilitytoperformdailyactivities.Seekmedicalattentionifthekneeisswollenandred,orifthekneepainisassociate