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KMID : 0361620220570030223
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Journal of the Korean Orthopaedic Association
2022 Volume.57 No. 3 p.223 ~ p.232
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Open Reduction and Internal Fixation for the Capitellum Fracture of the Humerus
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Ha Cheung-Soo
Kim Jun-Han
Ha Joong-Won
Lee Jun-Ku
Han Soo-Hong
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Abstract
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Purpose: Fractures of the capitellum of the humerus are relatively rare injuries, and the prevalence is known to be less than 1% of all elbow fractures. Since the capitellum forms an articular surface with the radial head, this fracture is considered to be an intra-articular fracture, and surgical treatment is required for the displaced fracture. Due to the rarity of this type of fracture, only a few studies on treatment have been published. We report the results of cases that underwent surgical treatment for capitellum fractures.
Materials and Methods: Through a retrospective review, patients who underwent surgical treatment for a capitellum fracture from January 2002 to January 2020, and who could be followed-up for at least 12 months and were over 16 years old were included. A total of 19 patients who underwent open reduction and internal fixation with K-wires and headless compression screws were included.
Radiographic analysis was carried out using simple radiographs taken to investigate the stability of the joint and the union of fractures.
Clinical results were analyzed using the range of motion of the elbow, visualized pain score, Mayo Elbow Performance score (MEPS), Disabilities of the Arm, Shoulder and Hand (DASH) score, and postoperative complications were analyzed at the time of the final follow-up.
Results: The average age of the patients was 57.3 years, and their average follow-up time was 22.6 months. Most of them were type I (n=12) as per the Bryan?Morrey classification. The radiographic analysis showed that bony union was obtained at the final follow-up in all cases, and there was no case of joint instability. The results of the clinical analysis showed that average flexion contracture was 9.7° (min 0°?max 30°), average further flexion was 130.3° (min 90°?max 145°), and average range of motion was 120.5°, and the average visualized pain score at the final follow-up was 1.3 (min 0?max 3). At the final follow-up, the average MEPS was 85.5 (min 75?max 95) and the average DASH score was 27.6 (min 5?max 46), which was satisfactory.
Conclusion: With early rehabilitation, capitellum fractures can be treated well without complications if the joint surface is aligned congruently with open reduction and firm fixation by using K-wire or headless compression screws.
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KEYWORD
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capitellum, headless compression screw, open reduction, internal fixation
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