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  • Title: Ultrasound-guided joystick technique for percutaneous leverage reduction with Kirschner wires and external fixator in pediatric proximal humerus fractures: A clinical outcome study.
    Author: Yin F, Wang J, Wang J, Xin T, Hu Y.
    Journal: Injury; 2024 Nov; 55(11):111780. PubMed ID: 39216413.
    Abstract:
    OBJECTIVE: This study aims to evaluate the clinical application efficacy of the ultrasound-guided Joystick technique for percutaneous leverage reduction in conjunction with Kirschner wires and external fixator in the treatment of difficult-to-reduce pediatric Salter-Harris II type proximal humerus fractures. METHODS: A retrospective analysis was conducted on children with Salter-Harris II type proximal humerus fractures, who failed manual closed reduction from January 2018 to March 2022. The group consisted of 7 males and 2 females, aged between 10 and 14 years. The surgical method involved percutaneous leverage reduction using the ultrasound-guided Joystick technique, combined with Kirschner wires and external fixation. Throughout the procedure, ultrasound is used for monitoring, with the fracture condition being determined before surgery. An external support screw is inserted into the distal end of the humerus as an operating lever, along with 3.5 mm Kirschner wire for ultrasound-guided reduction and maintenance of position during the operation. Following fixation with Kirschner wire, a combination external fixator is applied. After fixation is completed, ultrasound is used once more to assess the quality of fracture reduction, followed by verification of the reduction status using a C-arm X-ray machine. RESULTS: All surgeries were successfully completed with a 100 % success rate in resetting. Notably, there were no postoperative complications like nerve or vascular injury, malunion, nonunion, or bone bridge formation in the proximal humeral physis. Three cases experienced minor complications (redness and swelling at the screw sites), which improved with conservative management. The follow-up period ranged from 6 to 18 months, averaging 10.6 months, with fracture clinical healing occurring within 6 to 8 weeks (average 6.3 weeks). The final follow-up revealed excellent functional outcomes, with Neer scores ranging from 90 to 100 (average 96.3 points). CONCLUSION: The ultrasound-guided Joystick technique for percutaneous leverage reduction in conjunction with Kirschner wires and external fixator can effectively treat difficult-to-reduce Salter-Harris II proximal humeral fractures in children, avoiding open reduction and minimizing intraoperative radiation exposure. This approach offers good stability and facilitates early rehabilitation, aligning with the ERAS (Enhanced Recovery After Surgery) concept in fracture management, thus warranting clinical promotion.
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