Jan 2, 2019
The effect of bone mineral density (BMD) on outcomes from total ankle arthroplasty (TAA) has not been studied. BMD can be estimated by measuring Hounsfield units (HU) on standard computed tomography(CT), which is frequently performed prior to TAA. We aimed to identify whether tibial and talar HU measured from preoperative CT scans were associated with periprosthetic fracture or revision risk in patients undergoing TAA
In conclusion, lower tibial HU
on preoperative CT was strongly associated
with periprosthetic fracture risk with TAA. In
patients with tibial HU less than 200, surgeons may consider
prophylactic internal fixation of the medial malleolus.
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