FIG. 3.

A series of panels showing intact (rows 1 and 3) and bisected (rows 2 and 4) representative middle phalanx specimens harvested after 10 (left four panels) and 20 (right four panels) weeks of implantation in nude mice. Construct midshafts were composed of P(LA-CL) and were either uncovered (upper four panels) or wrapped with calf periosteum (lower four panels). With time of implantation, there were noticeable differences between constructs with and without periosteum in terms of midshaft vascularization and thickness. Magnification = 1.6×.