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Table 1 WHO definitions of normal bone, osteopenia and osteoporosis used to interpret central dual-energy X-ray absorptiometry scans

From: The clinical outcomes of cementless unicompartmental knee replacement in patients with reduced bone mineral density

Bone statusT score
NormalT ≥ − 1.0
Osteopenia− 2.5 < T < − 1.0
OsteoporosisT ≤ − 2.5