A, Lateral tomogram of wrist, showing typical anterior pole fracture. B, Lunate shows no further collapse 12 months after ulnar lengthening, and early healing is suggested. (From Armistead RB, Linscheid RL, Dobyns JH, et al: Ulnar lengthening in the treatment of Kienböck’s disease, J Bone Joint Surg 64A:170, 1982. By permission of Mayo Foundation.)