For the past 4 years, whenever it was possible to choose between the subglandular or the submuscular location for the implant pocket (in cases with no precise indication for the submuscular location), the authors have opted for the totally subfascial plane (subaponeurotic) to avoid the disadvantages of the other locations and to obtain additional benefits. The subfascial plane lies below the deep thoracic fascia, or deep aponeurosis, which is not only that of the pectoralis (the muscle connecting with the breast in its upper two-thirds only). The implant is placed completely beneath this fascia, which covers, in addition to the pectoralis major muscle, the serratus, the lateral oblique, and the rectus anterior muscles. This study included 100 women who had breast implanted in the subfascial (subaponeurotic) plane. Of these women, 63 were thin patients with little fatty tissue. Textured surface implants were used McGhan style 120 and 110. All procedures were approached through an inferior periareolar incision. Excellent coverage of the implant as well as natural shape and mobility was achieved for all patients. No rippling in the upper half was observed. Two patients had Baker grade 2 capsular contracture (2%). No seromas or infections were seen, and only once was a surgical exploration necessary for excess drainage volume (1%). In the immediate postoperative period, less edema was recorded and recovery was faster than with the other two procedures: submuscular and subglandular. When circumstances indicate a subglandular pocket, the subfascial plane would seem to be the logical place for mammary implants.