“…There are few case reports on sleeve fractures available in the literature [2,3,5,6,8,9,13,15], but they all describe inferior or superior pole fractures; however, all the previous authors have also emphasized an early diagnosis and prompt surgical intervention of such injuries. Guy et al [2] described a case of bilateral sleeve avulsion fractures of the lower poles of the patellae in an 11-yearold boy following an indirect trauma to both knees.…”