Shoulder Case A lady with painful stiff shoulder secondary
to rheumatoid arthritis was scheduled for should replacement
The CT scan showed extensive
erosion of the glenoid. The bone model confirmed the erosion
and and a mock surgery on the model revealed the following
1 : If one were to place the
glenoid component there could be fracture of the central
2 : There was a possibility
of inserting the glenoid component in excessive retro
version because of the posterior slope.
By studying the bone model it was
realized that if the glenoid component is inserted, it would
fail pretty soon.
Hence, instead of total shoulder replacement, only hemi-arthoplasty
(partial replacement) would give long lasting result.
The model helped in avoiding
the complication of fracture of the glenoid / improper version
of the glenoid component on the table both of which would
have resulted in early failure.