To determine the prevalence of CD4 lymphocyte levels less than 350 cells/mm3 accompanying viral loads (VL) less than 500 copies/ml (discordant CD4 lymphocyte levels/VL) in HIV-infected men with bone pathologies, we conducted a review of the records of 3512 men. We found discordant CD4 lymphocyte levels/VL in 26 (36.1%) out of 72 with bone pathologies, and in 704 (20.5%) out of 3440 without bone pathologies (P < 0.01), and concluded that HIV sequestered in bone was a possible explanation.