Table 1: Description of population.


Numbers of patients1248
Average age of patients73,40 years
Range of age21–85 years
Gender ratio (M : F)1,15 (658 : 570)
Diseases ratio (arthritis/fractures)2,59 (900 : 348)
ASA I: 338 (27,08%)
ASA physical status classification systemASA II: 792 (63,46%)
ASA III: 118 (9,46%)
Number of patients who needed intensive care after surgery59 (4,73%)
Average days in intensive care2,8
Range of days in intensive care1–6
Average days of hospitalization6,7
Range of days of hospitalization4–15
Anterior approach: 40 (3,20%)
Surgical approachLaterolateral approach: 926 (74,20%)
Posterolateral approach: 282 (22,6%)
Average length of surgical wound11.6 cm
Range of length of surgical wound10.3–16.5 cm
Average length of surgery56.3 minutes
Range of length of surgery48.3–90.8 minutes
General anesthesia523 (41,19%)
Spinal anesthesia725 (58,81%)