2Stannard JP, Harris HW, Volgas DA, et al. Functional outcome of patients with femoral head fractures associated with hip dislocations [J]. Clin Orthop Relat Res,2000,8(377) :44 -56.
3Jukkala - Partio K, Partio EK, Hirvensalo E, et al. Absorbable fixation of femoral head frac- tures. A prospective study of six cases [ J ]. Ann Chir Gynaeeol, 1998,87 ( 1 ) :44 - 48.
4Swiontkowski MF, Thorpe M, Seiler JG, et al. Operative management of displaced femoral head fractures:case -matched comparison of anterior versus posterior approaches for Pipkin I and Pipkin II fractures[J]. J Orthop Trau- ma,1992,6(4) :437 -442.