Seventy patients over the age of 60 with ASA III or IV physical status were randomly allocated to two groups : In the PCSNB group , ultrasound-guided psoas compartment block was performed with modified Winnie technique using 30 mL of 0.25 % bupivacaine with 1:200.000 epinephrine ( 5 gr/mL ) and iliac crest block was performed using the same local anaesthetic solution ( 5 mL ) .