The Collaborative International Dictionary of English v.0.48:

Coxalgia \Cox*al"gi*a\ (-?l"j?-?), Coxalgy \Cox"al`gy\
   (k?ks"?l`j?), n. [NL. coxalgia, fr. L. coxa hip. + Gr. ???
   pain: cf. F. coxalgie.] (Med.)
   Pain in the hip.
   [1913 Webster]