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Abstract Objective To study the practical value of using the upper border of the pectoralis major tendon(PMT) insertion on the humerus as reference mark to determine the proper implant height in hemiarthroplasty for proximal humeral fractures.Methods From January to December 2014，we measured the distance between the upper border of the PMT insertion on the humerus and the top of the humeral head during the open reduction and internal fixationfor fractures of proximal humerus in 12 patients.There were 4 males and 8 females.Theaverage age was (65.3±5.2) years(range，56 to 72 years) The average distance between PMT and the top of the humeral head was (5.21±0.42)cm.From January 2015 to December 2018，5.2cm was used as a reference value to determine the proper implant height in hemiarthroplasty for proximal humeral fractures in 38 older patients.There were males and 31 females.The average age was (72.0±6.5)years (range，60 to 82 years).Three months after surgery，both humerus length were obtained from the X-ray film in same method and compared.Distance between the upper border of the PMT insertion on the humerus and the top of the humeral head were estimated bycontralateral HL×0.176.The length wasofcompared with (5.21±0.42)cm.Results Length of operated humerus and contralateral humerus were (32.41±2.47)cm and (31.93±2.82)cm，no significant difference was found between the both humerus length (P＞0.05).Estimated distance between the upper border of the PMT insertion on the humerus and the top of the humeral head was (5.61±2.82)cm.There was no significant difference between (5.61±2.82)cm and 5.20cm.Conclusion The upper edge of the PMT insertion is a reliable reference mark for restoring proper humeral height in hemiarthroplasty for severe proximal humerus fracture in the elderly，the distance between PMT and the top of the humeral head was (5.21±0.42)cm，which is one of the reference values.
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ZhangYunhai,Liu Wei,Huang Donghui, et al. Clinical Experience of Using the Upper Border of the Pectoralis Major Tendon Insertion on the Humerus as Reference Mark to Determine the Proper Implant Height in Hemiarthroplasty[J]. sygkzz, 2020, 26(5): 390-393.
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| http://www.sygkzz.com/EN/ OR http://www.sygkzz.com/EN/Y2020/V26/I5/390 |
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