Table I.
Relevant demographics of the study group
| Champagne flute | Intermediate | Stovepipe | |
|---|---|---|---|
| Patients (n) | 7 | 8 | 5 |
| Age (yrs)* | 62.0 (53 to 63) | 62.5 (62 to 75) | 58.0 (56 to 66) |
| BMI* | 22.7 (22.0 to 27.0) | 23.9 (19.4 to 27.9) | 20.0 (19.0 to 22.4.2) |
| CFI* | 5.0 (4.9 to 5.4) | 3.8 (3.4 to 4.2) | 2.7 (2.6 to 2.7) |
| Height* | 152.0 (151.0 to 155.0) | 153.0 (149.0 to 155.0) | 157.7(157.0 to 161.0) |
| Pre-operative bone quality | |||
| BMD of proximal femur (g/cm2)* | |||
| Proximal (zone1 + zone7) | 0.76(0.62to 0.96) | 0.8(0.72 to 0.9) | 0.7(0.67 to 0.71) |
| Middle (zone2 + zone6) | 1.25(0.92 to 1.34) | 1.13(1.01 to 1.19) | 1.14(0.9 9to 1.19) |
| Distal (zone3 + zone 5) | 1.57(1.36 to 1.70) | 1.46(1.39 to 1.55) | 1.32(1.29 to 1.53) |
| Pre-operative lumbar T-score (L2 to L4)* | -0.2 (-0.2 to 0.3) | -1.8 (-2.3 to 0.1) | -2.2 (-3.0 to -1.9) |
| Stem size* | 2.0 (1.8 to 2.5) | 3.0 (2.9 to 3.2) | 3.5 (3 to 4) |
*
Values are expressed as the median (IQR)
BMI, body mass index; CFI, canal flare index; BMD, bone mineral density
T-score represents the number of standard deviations from the mean bone mineral density in young adult population of the same gender