TY - JOUR
T1 - Re-dislocation after revision total hip arthroplasty for recurrent dislocation
T2 - a multicentre study
AU - Yoshimoto, Kensei
AU - Nakashima, Yasuharu
AU - Aota, Shigeo
AU - Kaneuji, Ayumi
AU - Fukui, Kiyokazu
AU - Hirakawa, Kazuo
AU - Nakura, Nariaki
AU - Kinoshita, Koichi
AU - Naito, Masatoshi
AU - Iwamoto, Yukihide
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (No. 15?K10450). We thank Junji Kishimoto, a statistician from the Digital Medicine Initiative, Kyushu University, for his valuable comments and suggestions in regards to the statistical analysis. The authors certify that they have no commercial associations that might pose a conflict of interest in connection with the submitted article.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Purpose: Although most case of dislocations after total hip arthroplasty (THA) can be managed with conservative treatment, recurrent dislocation may require surgical intervention. This multicentre study was conducted to evaluate the re-dislocation rate after revision THA for recurrent dislocation, and to determine the risk factors for re-dislocation. Methods: We retrospectively reviewed the 88 hips in 88 patients who underwent revision THA for recurrent dislocation at five institutions between 1995 and 2014. The mean patient age at surgery was 68.5 years and the mean follow-up period was 53.1 months. Multivariate logistic regression was performed to identify risk factors for re-dislocation. Results: Sixteen hips in 16 patients (18.2 %) re-dislocated at a mean of 25.5 months (range, 1–83 months) after revision THA. Multivariate analysis identified osteonecrosis of the femoral head (odds ratio [OR] = 5.62 vs. osteoarthritis) and a femoral head size < 32 mm (OR = 3.86) as independent risk factors for re-dislocation. Eight hips required additional revision THA for re-dislocation. Conclusion: The re-dislocation rate after revision THA for recurrent dislocation remains high, suggesting the need for prevention measures. We recommend the use of a femoral head size ≥ 32 mm.
AB - Purpose: Although most case of dislocations after total hip arthroplasty (THA) can be managed with conservative treatment, recurrent dislocation may require surgical intervention. This multicentre study was conducted to evaluate the re-dislocation rate after revision THA for recurrent dislocation, and to determine the risk factors for re-dislocation. Methods: We retrospectively reviewed the 88 hips in 88 patients who underwent revision THA for recurrent dislocation at five institutions between 1995 and 2014. The mean patient age at surgery was 68.5 years and the mean follow-up period was 53.1 months. Multivariate logistic regression was performed to identify risk factors for re-dislocation. Results: Sixteen hips in 16 patients (18.2 %) re-dislocated at a mean of 25.5 months (range, 1–83 months) after revision THA. Multivariate analysis identified osteonecrosis of the femoral head (odds ratio [OR] = 5.62 vs. osteoarthritis) and a femoral head size < 32 mm (OR = 3.86) as independent risk factors for re-dislocation. Eight hips required additional revision THA for re-dislocation. Conclusion: The re-dislocation rate after revision THA for recurrent dislocation remains high, suggesting the need for prevention measures. We recommend the use of a femoral head size ≥ 32 mm.
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U2 - 10.1007/s00264-016-3127-1
DO - 10.1007/s00264-016-3127-1
M3 - Article
C2 - 26893219
AN - SCOPUS:84958758021
VL - 41
SP - 253
EP - 258
JO - International Orthopaedics
JF - International Orthopaedics
SN - 0341-2695
IS - 2
ER -