5Allen W C, Cope R. Coxa Sahans.- the snapping hip revisited [J]. J Am Acad Orthop Surg, 1995,3 (5) : 303-308.
6Provencher M T, Hofmeister E P, Muldoon M P. The surgical treatment of external coxa saltans (the snapping hip) by Z-plasty of the iliotibial band [J]. Am J Sports Med, 2004.32(2):470-476.