Lathika G; Dr. Rajaram M; Elakkiya.G; Periasamy, P. . A Comparative Study of Spinal Bupivacaine With Fentanyl Versus Ultrasound-Guided Combined Lumbar Plexus and Sciatic Nerve Block in Lower Limb Orthopedic Procedures: A Prospective Randomized Controlled Trial. SJHR-Africa 2025, 6, 9.