Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (31): 4921-4926.doi: 10.3969/j.issn.2095-4344.2015.31.001

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Total hip replacement for Crowel III and IV hip dislocation: prosthesis position and stability 

Ding Liang-jia1, Liu Xiao-min1, Liu Ying-li2   

  1. 1Department of Joint Surgery, the Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia Autonomous Region, China; 2Rehabilitation Center, the Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia Autonomous Region, China)
  • Received:2015-06-05 Online:2015-07-23 Published:2015-07-23
  • About author:Ding Liang-jia, Master, Attending physician, Department of Joint Surgery, the Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010020, Inner Mongolia Autonomous Region, China

Abstract:

BACKGROUND: Developmental dislocation of the hip is a type of adult hip dysplasia, including Crowe III and IV type; the type of dislocation of the hip is a severe prognosis. Total hip replacement is clinically used for the complex reconstruction of acetabulum. For injured acetabulum, autologous bone graft is effective to reconstruct acetabulum structure, provides good coverage and stability for the acetabulum. Postoperative combination with effective exercise can ensure the recovery of acetabulum function.
OBJECTIVE: To analyze the correlation of prosthesis position selection during total hip replacement with clinical 
short- and middle-term effects of Crowel III and Crowel IV hip dislocation.
METHODS: Clinical data of 28 cases of dysplasia and dislocation of the hip joint combined with severe osteoarthritis, who were treated in the Department of Joint Surgery, the Second Affiliated Hospital, Inner Mongolia Medical University from December 2011 to December 2012, were retrospectively analyzed. All patients received total hip replacement. Implant was biological artificial total hip joint prosthesis. During 2-year follow-up, patients were rechecked by imaging regularly to analyze the imaging changes of acetabulum prosthesis position and bone graft fusion. Harris hip score was used to assess the recovery of hip function. The correlation of prosthesis position and short- and middle-term effects was analyzed.
RESULTS AND CONCLUSION: The filling rate of medullary cavity of prosthesis was above 75%. The initial position was fixed and stable. The stability rate of femur-prosthesis interface reached 100%. Compared with pre-replacement, hip function was significantly improved at 6 months post surgery (t=25.55, 9.07; P < 0.05). These results indicate that total hip replacement for Crowel III and Crowel IV hip dislocation can effectively reconstruct the acetabulum, recover hip function, and stabilize prosthesis. Total hip replacement is characterized by good filling rate, high stability of femoral prosthesis interface, and stable initial fixation. The clinical repair effect is strongly associated with the position of the prosthesis.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Arthroplasty, Replacement, Hip, Prosthesis Implantation, Hip Dislocation, Follow-Up Studies

CLC Number: