A concern regarding the diagnosis of injury of a bipartite patella at the lower part of the patella

Developmental anomaly of ossification type patella partita

“…As the patellar ossification centre enlarges, expanding margins may be irregular and associated with accessory ossification centres, which are most commonly found superolaterally [24]. Approximately half of them coalesce during childhood and adolescence [28]. In the remaining individuals, this superolateral accessory ossification centre may fail to unite with the main portion of the patella, leading to patella partita—known as developmental anomaly of ossification type patella partita [3, 10, 24, 25, 28].…”

“…Approximately half of them coalesce during childhood and adolescence [28]. In the remaining individuals, this superolateral accessory ossification centre may fail to unite with the main portion of the patella, leading to patella partita—known as developmental anomaly of ossification type patella partita [3, 10, 24, 25, 28].…”

“…Since these two reports were published, bipartite patella has been noticed as a cause of anterior knee pain in adolescents and young athletes. During these nearly three decades, many reports of patella partita have been published [1, 3–9, 11, 14–28, 31, 36–38, 40, 41], and its clinical significance has become more important than was previously recognized. A new classification of developmental anomaly of ossification type patella partita was recently proposed [27], and several imaging studies have reportedly been used to evaluate symptomatic bipartite patella [17, 18, 21, 26].…”

Patella fracture in a boy with bilateral inferior pole bipartite patellae

“…This prompted Oohashi et al to comment, that, in their opinion, the rapid union of a bipartite fragment was unlikely, due to interposed fibrous tissue, and that this case represented a stress fracture [6].…”