The aim of this study is to evaluate the analgesic efficacy of fascia iliaca compartment block using bupivacaine versus bupivacaine with dexamethasone or magnesium sulphate for dynamic hip screw surgery under spinal anesthesia.

The primary outcome will be the duration of effective analgesia from FICB till the first analgesic dose is required,the secondary outcomes will be the severity of postoperative pain as will be assessed by the visual analogue scale and the total dose of pethidin for rescue analgesia.

Different modes of analgesia are given prior to neuraxial blockade for pain relief like non-steroidal anti-inflammatory drugs (NSAID), opioids and peripheral nerve blocks such as, femoral nerve block, 3 in 1 block or fascia iliaca compartment block (FICB).

FICB is believed to be most beneficial compared to other procedures because of its safety and efficacy . FICB provides blockage of at least two of the three major nerves that supply the medial, anterior and lateral thigh with one simple injection, namely the femoral and lateral femoral cutaneous nerves.

FICB is an anterior approach to the lumbar plexus. The pop technique using fascial click had a low success rate of 35% - 47% .However, as the FICB was performed under real-time ultrasound guidance, the success rate was increased up to 82- 87%, leading to an increased interest in FICB as a postoperative analgesia option for hip and knee surgical procedures .

Inclusion Criteria:

• American Society of Anesthesiology physical status (ASA) I & II of both sex.
• Age between 20 and 70 years.
• Patients with traumatic hip fracture presenting for elective or emergency dynamic hip screw (DHS) fixation under spinal anesthesia.

Exclusion Criteria:

• Patient refused to give consent
• Patients with history of allergy to dexamethasone, magnesium sulphate or bupivacaine.
• Patients with contraindications to spinal anesthesia.
• Previous surgery in the affected hip, infection at the injection site, multiple fractures.
• Peripheral neuropathy.
• Use of analgesics within 8 hours before the spinal block.
• Inguinal hernia, and femoral artery graft.

The anesthetists who will prepare the drug and who will collect the data will be blinded to the study protocol