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Anterior section of the hip joint capsule is innervated by femoral nerve and obturator nerve, and posterior section is innervated by the nerve to quadratus femoris muscle and occasionally by the superior gluteal (posterolateral region) and sciatic nerve (posterosuperior region). one of the regional anesthesia options for hip surgery is the fascia iliaca compartment block (fiCb) that affects nerves important for hip innervation and sensory innervation of the thigh -femoral, obturator and lateral femoral cutaneous nerve. fiCb can be easily performed and is often a good solution for management of hip fractures in emergency departments. its use reduces morphine pre-operative requirement for patients with femoral neck fractures and can also be indicated for hip arthroplasty, hip arthroscopy and burn management of the region. quadratus lumborum block (qlb) is a block of the posterior abdominal wall performed exclusively under ultrasound guidance, with still unclarified mechanism of action. When considering hip surgery and postoperative management, the anterior qlb has shown to reduce lengthy hospital stay and opioid use, it improves perioperative analgesia in patients undergoing hip and proximal femoral surgery compared to standard intravenous analgesia regimen, provides early and rapid pain relief and allows early ambulation, thus preventing deep vein thrombosis and thromboembolic complications etc. however, some nerve branches responsible for innervation of the hip joint are not affected by qlb, which has to be taken into consideration. qlb has shown potential for use in hip surgery and perioperative pain management, but still needs to be validated as a reliable treatment approach. keywords: hip joint innervation; regional anesthesia; orthopedic surgery; fascia iliaca compartment block; quadratus lumborum block

We report on the influence of the duration of halogravity traction for achieving curve correction in monozygotic twins with Marfan syndrome who underwent posterior spinal fusion. Review of the medical charts and standard radiograph analysis of twin girls treated at our department was performed. Halogravity traction with a four-pin skull construct was applied for 3 weeks in twin A and for 2 weeks in twin B with a maximum of 20% body weight used. Both were on a 24-hours-day halogravity traction regime. Achieved thoracic curve correction after halogravity traction was 31% in twin A and 18% in twin B. Although less curve correction after traction was achieved in twin B, this had no significant implications on final postoperative curve correction. Halogravity traction can be a useful tool in the preoperative treatment of scoliosis in patients with Marfan syndrome if applied for 3 weeks. In order to avoid complications, we propose that lower weights be used with a starting weight of 1.5 kg increased by 1 kg daily until 20% body weight is reached.