Abstract
To monitor changes in bone mineral density (BMD) of the proximal tibia and the calcaneus in patients with anterior cruciate ligament (ACL) rupture before and after arthroscopic reconstruction of the ligament, related to clinical data. A 2-year prospective cohort study with assessment of patient evaluation of knee performance, clinical scoring of surgical results, and measurement of BMD in the tibia and calcaneus. Eighteen patients with a unilateral ACL rupture underwent an autogenous bone-patellar tendon-bone graft ACL reconstruction. The patients were examined before surgery and after 4, 12, and 24 months. BMD was assessed bilaterally in the proximal tibia and calcaneus using dual-photon absorptiometry and converted to a Z-score by use of BMD values from a group of healthy controls. Clinical evaluation included determination of Lysholm score, quantitative Lachman test, pivot-shift test, and the patients' self-reported highest level of activity and knee performance in sports and daily activities. There were significant declines in Z-score of the proximal tibia of the operated leg during the first year after surgery, whereas there was no change in the calcaneus and contralateral leg. In the lateral tibia, the Z-score was signifi...Continue Reading
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