The fibula is a valuable source of a bone graft, but because the fibula has a role in lower extremity function, it is important to determine whether partial removal results in dysfunction or other problems. Forty-one patients (48 +/- 10 years of age) had a portion of their fibula removed for a bone graft. At evaluation 27 +/- 8 months later, 24 had no pain, 11 mild pain, and six moderate or severe pain. Sixteen had no complaints of any kind, but four without pain had minor difficulties with vigorous activities, and three complained of ankle swelling. There were no differences in range of motion between the operated and nonoperated side. Average muscle torque was lower on the operated than on the nonoperated side, but this difference was statistically significant only for ankle evertors in men. This study demonstrates that most patients will have subjective complaints and mild muscular weakness after removal of a portion of the fibula.