Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (18): 2863-2868.doi: 10.3969/j.issn.2095-4344.3829

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Difference between proximal humeral locking plate and cannulated screw fixation in the treatment of Mutch type II fracture of greater tuberosity of humerus

Liu Gang1, 2, 3, 4, Zhang Baolu5, Shi Jie1, 2, 3, 4, Bao Dingsu1, 2, 3, 4, Zeng Shengqiang1, 2, 3, 4, Deng Kai1, 2, 3, 4, Liu Yang1, 2, 3, 4, Wang Guoyou1, 2, 3, 4,      Fu Shijie1, 2, 3, 4   

  1. 1Department of Orthopedics, 2Center for Orthopedic Diseases Research, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University,  Sichuan Province, China; 3Academician Workstation in Luzhou,  Sichuan Province, China; 4Clinical Base of Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Guangdong Province Medical 3D Printing Application Transformation Engineering Technology 
  • Received:2020-02-28 Revised:2020-03-06 Accepted:2020-05-09 Online:2021-06-28 Published:2021-01-12
  • Contact: Fu Shijie, Professor, Chief physician, Department of Orthopedics, and Center for Orthopedic Diseases Research, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China; Academician Workstation in Luzhou, Luzhou 646000, Sichuan Province, China; Clinical Base of Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Guangdong Province Medical 3D Printing Application Transformation Engineering Technology Research Center, Luzhou 646000, Sichuan Province, China
  • About author:Liu Gang, Master, Physician, Department of Orthopedics, and Center for Orthopedic Diseases Research, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China; Academician Workstation in Luzhou, Luzhou 646000, Sichuan Province, China; Clinical Base of Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Guangdong Province Medical 3D Printing Application Transformation Engineering Technology Research Center, Luzhou 646000, Sichuan Province, China
  • Supported by:
    the Modern Design and Cultural Research Project of Sichuan Provincial Key Research Base of Philosophy and Social Sciences, No. MD18E014 (to LG)

Abstract: BACKGROUND: In recent years, proximal humeral locking plate has achieved good results in the treatment of proximal humeral fractures. However, there are few reports of locking plate application in Mutch type II greater tuberosity split fractures.
OBJECTIVE: To exploit the clinical effect of Mutch type II greater tuberosity split fractures of proximal humerus with open reduction and internal fixation with locking plate of proximal humerus. 
METHODS: From May 2009 to June 2018, 40 patients (29 males and 11 females) with Mutch type II GT split fractures were treated in the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University. They were randomly divided into two groups. The observation group received internal fixation with locking plate of proximal humerus (n=20). The control group received cannulated screw fixation (n=20). The fracture healing and shoulder joint function were followed up after operation. Shoulder joint function was assessed by American Shoulder and Elbow Surgeon (ASES) score, Constant-Murley score (CMS), University of California, Los Angeles  (UCLA) shoulder score, and visual analogue scale score. The trial was approved by the Ethics Committee of the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University (approval No. SWMUTCMJ-2017-09-10). 
RESULTS AND CONCLUSION: (1) After 1 year of follow-up, there were no complications such as plate or screw loosening or broken. In the observation group, there were one case of malunion of large tuberosity and one case of shoulder joint pain. In the control group, there were three cases of malunion of large tuberosity, two cases of upward movement of large tubercle and two cases of shoulder joint pain. (2) At 1-year follow-up, the CMS score and UCLA score of the observation group were higher than those of the control group (P < 0.05). ASES score and VAS score showed no significant difference (P > 0.05). (3) The results showed that proximal humeral locking plate internal fixation in the treatment of Mutch II type fracture of greater tuberosity of humerus can achieve strong fixation and restore the displacement of greater tuberosity fracture. However, we still have to take an eye in complication.

Key words: bone, fixation, implants, greater tuberosity of humerus, Mutch type II fractures, plate, cannulated screw

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