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A prosthetic foot comprises an elongated, substantially two-dimensional, resilient toe member, an elongated, substantially two-dimensional heel member, and a substantially rigid carrier member. One end of each of the toe and heel members is independently connected to the carrier member. The toe and

A prosthetic foot comprises an elongated, substantially two-dimensional, resilient toe member, an elongated, substantially two-dimensional heel member, and a substantially rigid carrier member. One end of each of the toe and heel members is independently connected to the carrier member. The toe and heel spring members can be selected independently so as to provide the wearer with personalized characteristics and responses at heel-strike, foot-flat, and toe-off.

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A prosthetic foot comprises an elongated, substantially two-dimensional, resilient toe member, an elongated, substantially two-dimensional heel member, and a substantially rigid carrier member. One end of each of the toe and heel members is independently connected to the carrier member. The toe and

A prosthetic foot comprises an elongated, substantially two-dimensional, resilient toe member, an elongated, substantially two-dimensional heel member, and a substantially rigid carrier member. One end of each of the toe and heel members is independently connected to the carrier member. The toe and heel spring members can be selected independently so as to provide the wearer with personalized characteristics and responses at heel-strike, foot-flat, and toe-off. bable base material is adapted to be resorbed into a mammalian body within a period of approximately 18 to 24 months from an initial implantation of the implant into the mammalian body. 2. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 1, wherein the implant is sealed in the pre-implant condition in a sterile package. 3. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 1, wherein the window comprises a width greater than about 6 mm and a length greater than about 11 mm. 4. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 3, wherein the window is further sized and shaped to accommodate a portion of a superior articular process of one of the two vertebrae when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae. 5. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 4, wherein the single layer of resorbable polymer base material has a rectangular perimeter edge and the window has an edge which is not parallel to any of the four edges of the rectangular perimeter edge. 6. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 1, wherein: the window comprises a first window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate both a portion of a transverse process of one of the two vertebrae and a portion of a superior articular process of one of the two vertebrae; and the implant comprises a second window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate both a portion of a transverse process of the other of the two vertebrae and a portion of a superior articular process of the other of the two vertebrae. 7. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 1, wherein: the window comprises an articular first window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate a portion of a superior articular process of one of the two vertebrae; the implant comprises a transverse first window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate a portion of a transverse process of one of the two vertebrae; the window comprises an articular second window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate a portion of a superior articular process of the other of the two vertebrae; and the implant comprises a transverse second window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate a portion of a transverse process of the other of the two vertebrae. 8. The implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 7, wherein the implant further comprises an articular third window which is sized and shaped, when the single layer of resorbable polymer base material is rolled and placed into contact with the at least two vertebrae, to accommodate a portion of a superior articular process of a third vertebrae. 9. The rolled implant for containing a bone-graft material and facilitating posterior lateral fusion as set forth in claim 1, wherein the implant comprises a n