3[1]Kaufer H, Arbcr A. Mechanical function of the patella. J Bone and Joint Surg,1971 ;53-A(8) : 1551
4[2]Wendt PP, Johnson RP. A study of quadriceps excursion,torque,and the effect of patellectomy on cadaver knees. J Bone and Joint Surg, 1985 ; 67-A (6): 726
5[3]Smidt GL. Biomechanical analysis of knee flexion and extension. J Biomech, 1973 ; 6 : 79
6[4]Goldstein SA, Coale E, Weiss AP. et al. Patellar surface strain. J Orthop Res,1986:4: 372
7[5]Huberti HH,Hayes WC,Stone. JL,et al. Forec ratios in the quadriceps tendon andligamentum patellae. J Orthop Res,1984;2: 49
8[6]Carpenter JE, Kasman AR, Matthews LS. Fraacture of the patella. J Bone and Joint Surg , 1993 ; 75-A (10): 1550
9[7]Miiller ME,Allgower M,schneider R, et al. Manual of internal fixation. 3rd. Berlin : Springer Verlag,1991: 564~567
10[8]Braun W,Wiedemann M,Ruter A,et al. Indications and results of nonoperative treatment of patellar fractures. Clin Orthop, 1993 ; 289: 197