Table 4.

Perioperative data.

	Intervention (n = 34) Mean ± SD	Control (n = 30) Mean ± SD	p
Length of surgery (min)	101.3 ± 47.9	105.2 ± 57.8	0.77
Blood loss (ml)	213.4 ± 243.1	221.0 ± 226.3	0.90
Intraoperative complication (n)	0	2	–
Length of hospital stay (days)	4.1 ± 3.2	4.5 ± 2.0	0.58
Minimally invasive surgey (n)	11	8	0.62
Open surgery (n)	23	22	0.27
Received physiotherapy postoperatively (n)	3	3	0.87

Physiotherapy consisted of one hospital-based or home-based visit to ensure adequate independency. The intraoperative complications were dural tears.