title: Incidence and Epidemiology of Patellar Fractures.
abstract: The literature lacks large-scale, up-to-date, population-based epidemiology studies on the incidence of patellar fractures based on complete populations. The purpose of this study was to provide up-to-date information concerning the incidence of patellar fractures in a large and complete population spanning a decade and to report on the distribution of fracture classification, trauma mechanisms, and patient baseline demographics. A retrospective review of clinical and radiological records of 756 patellar fractures treated between 2005 and 2014 was conducted. Mean age at the time of fracture was 54±21 years. Mean age was 46±22 years for males and 61±18 years for females. The sex distribution was 425 (56%) females and 331 (44%) males. The incidence of patellar fractures between 2005 and 2014 was 13.1/100,000/ year with a year-to-year variation between 10.5 and 16.5/100,000/year during the 10-year observation period. The distribution of incidence shows an increase with increasing age. Males have the highest incidence of fracture in the 10-to-19-year age group, approximately 15.4/100,000/year. Females in the 60-to-80-year age group have the highest incidence, approximately 36/100,000/year. AO type 34-C3 was the most common fracture type, representing 25% of all patellar fractures, followed by AO type 34-C1, representing 23%. [Orthopedics. 2016; 39(6):e1154-e1158.].
authors.forename: Peter
authors.initials: P
authors.lastname: Larsen
authors.forename: Charles M
authors.initials: CM
authors.lastname: Court-Brown
authors.forename: Julie Odgaard
authors.initials: JO
authors.lastname: Vedel
authors.forename: Sabina
authors.initials: S
authors.lastname: Vistrup
authors.forename: Rasmus
authors.initials: R
authors.lastname: Elsoe
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D003718:Denmark / Q000453:epidemiology; D005260:Female; D050723:Fractures, Bone / Q000145:classification / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000293:injuries*; D012189:Retrospective Studies; D055815:Young Adult