Table 2.
Relationship of sex, diagnosis, glenoid angle, and contact position (rows) to glenoid type (columns)
| Category | Glenoid type | A1 | A2 | B1 | B2 | C |
|---|---|---|---|---|---|---|
| All diagnoses* | ||||||
| Female | 127 | 34 (27%) | 68 (53%) | 5 (4%) | 20 (16%) | 0 (0%) |
| Male | 213 | 32 (15%) | 80 (38%) | 21 (10%) | 78 (37%) | 2 (1%) |
| By diagnosis | ||||||
| Osteoarthritis | 231 | 30 (13%) | 104 (45%) | 19 (8%) | 78 (34%) | 0 |
| Avascular necrosis† | 18 | 13 (72%) | 4 (22%) | 1 (6%) | 0 (0%) | 0 |
| Cuff tear arthropathy‡ | 40 | 14 (35%) | 22 (55%) | 0 (0%) | 3 (8%) | 0 |
| Other§ | 51 | 9 (18%) | 18 (35%) | 6 (12%) | 16 (31%) | 2 (4%) |
| Osteoarthritis|| | ||||||
| Female | 70 | 12 (17%) | 40 (57%) | 3 (4%) | 15 (21%) | 0 (0%) |
| Male | 161 | 18 (11%) | 64 (40%) | 16 (10%) | 63 (39%) | 0 (0%) |
| Osteoarthritis only | ||||||
| Glenoid angle (degrees)¶ | 80.6 ± 7.8 | 78.3 ± 10.0 | 75.32 ± 7.6 | 67.7 ± 9.0 | ||
| Contact position (percent posterior)¶ | 56 ± 12 | 54 ± 10 | 76 ± 7 | 71 ± 8 | ||
* Fisher’s exact p < 0.001 for rate of Types A and B by sex; †Fisher’s exact p = 0.0018 for rate of Types A and B in comparison to osteoarthritis; ‡Fisher’s exact p < 0.001 for rate of Types A and B in comparison to osteoarthritis; §Fisher’s exact not signficant for rate of Types A and B in comparison to osteoarthritis; ||Fisher’s exact p = 0.0013 for rate of Types A and B by sex; ¶t-test comparing values for Types A and B < 0.001.