| Anterior |  | Lateral |  |  |
---|---|---|---|---|---|
 |  | Range |  | Range | P value |
Preoperative | |||||
 Number of patients | 77 |  | 71 |  |  |
 Age in years | 63.2 (SD 8.2) | 44-77 | 61.9 (SD 7.8) | 50-78 | 0.193 |
 Female | 32 (42%) |  | 32 (45%) |  | 0.425 |
 Body Mass Index (BMI) | 28.1 (SD 3.7) | 20.0-34.8 | 28.3 (SD 3.4) | 20.9-42.2 | 0.869 |
 Time of surgery | 12/2011-3/2014 |  | 12/2011-3/2014 |  |  |
 Surgeons | 8 |  | 8 |  |  |
Final follow-up | |||||
 Number of patients | 73 |  | 50 |  |  |
 Age in years | 62.5 (SD 8.0) | 44-77 | 62.2 (SD 8.5) | 50-78 | 0.261 |
 Female | 32 (44%) |  | 26 (52%) |  | 0.195 |
 Body Mass Index (BMI) | 28.3 (SD 4.0) | 20.0-34.8 | 28.7 (SD 3.2) | 20.9-42.2 | 0.834 |