We investigated the bone remodelling around the AML uncemented femoral component
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implant between the two scans in Gruen zones 1,2 and 6 of up to 8%, but an
increase in zones 4,5 and 7 of up to 36%. The increase in zones 4 and 5 were
statistically significant (P<0.05). The relative difference between the
operated and unoperated hips also showed a reduction in the bone density ratio
with time, except in zones 4 and 5 where an increase was seen.
We confirm the results of previous studies of proximal stress shielding and
distal loading around the AML implant and demonstrate that bone remodelling
continues in the medium term.
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