Palmu, S.; Kallio, P.E.; Donell, S.T.; Helenius, I.; Nietosvaara, Y. (2008). "Acute patellar dislocation in children and adolescents: A randomized clinical trial". Journal of Bone and Joint Surgery. 90 (3): 463–470. doi:10.2106/JBJS.G.00072. PMID18310694.
Palmu, S.; Kallio, P.E.; Donell, S.T.; Helenius, I.; Nietosvaara, Y. (2008). "Acute patellar dislocation in children and adolescents: A randomized clinical trial". Journal of Bone and Joint Surgery. 90 (3): 463–470. doi:10.2106/JBJS.G.00072. PMID18310694.