Between 1980 and 1997, six patients (seven shoulders) with glenoid
dysplasia and osteoarthritis underwent shoulder arthroplasty at
our institution because of moderate or severe shoulder pain. There
were four hemiarthroplasties and three total shoulder arthroplasties.
All six patients (seven shoulders) were followed for a minimum
of two years or until the time of revision surgery. The average
duration of follow-up was 7.3 years (range, 1.3 to sixteen years).
One shoulder treated with total shoulder arthroplasty underwent
revision surgery because of infection and loosening of the glenoid
component 5.8 years following the arthroplasty. Three shoulders
treated with hemiarthroplasty underwent revision to total shoulder
arthroplasty as a result of glenoid arthrosis at sixteen months,
twenty months, and thirty-four months. In each of these shoulders,
glenoid deficiency and cartilage loss were not addressed at the
time of the original hemiarthroplasty. The one shoulder that did
not undergo revision after hemiarthroplasty had a glenoid osteotomy
performed at the time of the hemiarthroplasty.
The data from this study suggest that glenoid deficiency and cartilage
wear should be addressed in some way at the time of shoulder arthroplasty
in patients with glenoid dysplasia.