Can a Subcostal Nerve Block Add Benefit to a Lateral Femoral Cutaneous Nerve Block for Open Hip Surgery

Hip Surgery is a very common form of surgery carried out across many hospitals within the UK in emergency and elective form. There is a variation between amongst surgeons with regard to the initial surgical incision required for the operation. It is fairly common practice to anaesthetise the Lateral Cutaneous Nerve of the thigh for analgesic reasons prior to the start of surgery, however due to the variation in surgical practice (and evolving surgical practices) this may not cover the entire surgical incision site. Another group of nerves termed the subcostal nerves has been described in the texts to perhaps cover the area of surgical incision along with blockade of the lateral cutaneous nerve of the thigh. On healthy volunteers the investigators plan to anaesthetise the lateral cutaneous nerve of the thigh, and the subcostal nerve on healthy participants to ascertain and map out the area of anaesthesia to see whether this could be a viable technique for analgesia for hip surgery in the future.