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  • Title: [Effectiveness comparison between open reduction combined with internal fixation and artificial radial head replacement in treating Mason type-III comminuted fractures of radial head].
    Author: Liu B, Lin Z, Cao L, Kang Y.
    Journal: Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi; 2010 Aug; 24(8):900-3. PubMed ID: 20839431.
    Abstract:
    OBJECTIVE: To compare the effectiveness between open reduction combined with internal fixation and artificial radial head replacement in treating Mason type-III comminuted fracture of radial head, to provide the evidence for available treatment methods. METHODS: Between January 2004 and June 2008, 65 cases of Mason type-III comminuted fractures were treated with open reduction, AO mini plate and screw system or a combination of Kirschner treatment (internal fixation group, n = 35) and with artificial radial head replacement (replacement group, n = 30). In internal fixation group, there were 21 males and 14 females with an age range of 21 to 35 years (mean, 30.7 years); the causes of injury were traffic accident in 12 cases, falling from height in 8 cases, and a fall in 15 cases; the locations were left side in 23 cases and right side in 12 cases; and the time between injury and surgery was 1-7 days (mean, 3 days). In replacement group, there were 19 males and 11 females with an age range of 23 to 67 years (mean, 32.5 years); the causes of injury were traffic accident in 7 cases, falling from height in 8 cases, and a fall in 15 cases; the locations were left side in 17 cases and right side in 13 cases; and the time between injury and surgery was 1-6 days (mean, 1.5 days). There was no significant difference in gender, age, disease cause, disease duration, or other general information between 2 groups (P > 0.05), so that 2 series of patients had comparability. RESULTS: Incisions healed primarily in 2 groups. All patients were followed up 1 to 4 years with an average of 2.5 years. There were significant differences in elbow flexion angle, extension angle, and forearm rotation angle between 2 groups (P < 0.05), but no significant difference in elbow pronation or supination weakness (P > 0.05). In internal fixation group, primary union occurred in 29 cases, delayed union in 2 cases, nonunion with ectopic ossification in 2 cases, and internal fixation failure in 2 cases. In replacement group, elbow flexion angle lost beyond 30 degrees in 1 case after 1 year, elbow stiffness occurred in 1 case because prosthesis was too long. According to Broberg and Morrey elbow scores system, the scores were 69.51 +/- 10.23 in internal fixation group and 81.55 +/- 12.06 in replacement group, showing significant difference (P < 0.05). The results were excellent in 15 cases, good in 5 cases, fair in 11 cases, and poor in 4 cases with an excellent and good rate of 57.1% in internal fixation group; the results were excellent in 17 cases, good in 5 cases, fair in 6 cases, and poor in 2 cases with an excellent and good rate of 73.3%. CONCLUSION: Artificial radial head replacement can achieve better joint function compared with open reduction combined with internal fixation in treating Mason type-III comminuted fractures of radial head.
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