This study aims to compare the effectiveness of preoperative ultrasound-guided suprainguinal fascia iliaca compartment block (SFICB) and pericapsular nerve group block (PENG) in preventing positioning pain during spinal anesthesia in patients who are scheduled for surgery due to hip fracture.

Patients to whom an analgesic block was placed (either PENG or SIFI compartment analgesic block) to ameliorate positioning pain during spinal anesthesia for hip fracture surgery will be enrolled after written consent is obtained. Patients will be asked to report their pain intensity while sitting and their sitting angle will be measured. Patients will be observed for any possible complications( LAST, allergic reactions, hypotension, bradycardia). Pain intensity will then again be questioned postoperatively along with analgesic consumption at the 24th hour. Patients will be arranged into two cohorts according to the block (PENG vs SIFI) and the data obtained will be compared between two cohorts.

Inclusion Criteria:

• Adults with a hip fracture
• who were scheduled to undergo surgery with spinal anesthetics
• has no neurologic disorders that impair cooperation (e.g dementia)
• has no true allergies to local anesthetics
• has no contraindications for regional or neuraxial anesthesia (e.g bleeding diathesis, severe aortic stenosis)

Exclusion Criteria:

• Childer under the age of 18
• patients scheduled to undergo surgery with general anesthetics
• refusing to participate
• allergies to local anesthetics
• any neurologic disorder that impairs patient cooperation
• any contraindication to regional or neuraxial anesthetics

Participants will be recruited from a population of patients in a tertiary medical care center who are scheduled to undergo hip fracture surgery with spinal anesthetics and to whom either of the analgesic blocks PENG or SIFI compartment block is placed.