髌股关节疼痛综合征是膝关节最常见的疾患之一,某运动医学中心报道其可占膝关节损伤的25%。[1]Devereaux MD, Lachmann SM. Patello-femoral arthralgia in athletes attending a sports injury clinic. Br J Sports Med. 1984;18:18-21.http://bjsm.bmj.com/content/18/1/18.longhttp://www.ncbi.nlm.nih.gov/pubmed/6722419?tool=bestpractice.com好发于10-30岁。根据一项长达7年的美国运动员患者的研究显示,7.4%的男性损伤(膝关节损伤的18.1%)及19.6%的女性损伤(膝关节损伤的33.2%)都被诊断为髌股关节疼痛综合征。[2]DeHaven KE, Lintner DM. Athletic injuries: comparison by age, sport, and gender. Am J Sports Med. 1986;14:218-224.http://www.ncbi.nlm.nih.gov/pubmed/3752362?tool=bestpractice.com加拿大研究小组研究长跑相关损伤,发现最常见主诉为髌股关节疼痛(16.5%),以及其中38%为男性,62%为女性。[3]Taunton JE, Ryan MB, Clement DB, et al. A retrospective case-control analysis of 2002 running injuries. Br J Sports Med. 2002;36:95-101.http://bjsm.bmj.com/content/36/2/95.longhttp://www.ncbi.nlm.nih.gov/pubmed/11916889?tool=bestpractice.com