An analysis of early curative results of simultaneous versus staged total hip arthroplasty for hip joint ankylosis
CAO Can
YANG Jing
PEI Fu-xing
SHEN Bin
ZHOU Zong-ke
KANG Peng-de
Abstract：Objective To analyze the impact of interval time of bilateral total hip arthroplasty ( THA ) on the postoperative joint function in the patients with bilateral hip joint ankylosis.Methods From April 2008 to May 2010, 31 patients with bilateral hip joint ankylosis underwent bilateral THA at different time intervals, whose clinical data were retrospectively analyzed. The patients were divided into 3 groups. In group A, simultaneous surgery was performed. In group B, staged surgery was performed, but within a single hospitalization period. In group C, surgery was performed in 2 hospitalization periods. The differences in bilateral hip joint range of motion ( ROM ) were compared among the 3 groups at 1 month, 3 months and 1 year after the surgery. The Harris scores at 1 year after the surgery were recorded.Results There were no statistically signiifcant differences in the hip joint ROM between the prior side and the lateral side in group A and group B at 1 month, 3 months and 1 year after the surgery. But statistically signiifcant differences existed in the hip joint ROM in group C between the prior side ( 171±19.5 ) and the lateral side ( 217±26.3 ) at 1 month after the surgery (t=-39.752,P<0.001 ) and also between the prior side ( 177±26.6 ) and the lateral side ( 235±23.2 ) at 3 months after the surgery (t=-51.375,P<0.001 ). There were statistically signiifcant differences in the hip joint ROM in group C between the prior side ( 192±20.9 ) and the lateral side ( 236±25.1 ) at 1 year after the surgery (t=-35.437,P<0.001 ). No statistically signiifcant differences existed in the hip joint ROM between group A and group B at 1 month, 3 months and 1 year after the surgery. There were no statistically signiifcant differences in the hip joint ROM of the lateral side in group C at 1 month, 3 months and 1 year after the surgery when compared with that in group A and group B. The hip joint ROM of the prior side at 1 month after the surgery was ( 171±19.5 ) in group C, which was smaller than ( 221±24.1 ) in group A and ( 225±19.8 ) in group B. The hip joint ROM of the prior side at 3 months after the surgery was ( 177±26.6 ) in group C, which was smaller than ( 244±20.2 ) in group A and ( 239±22.3 ) in group B. The hip joint ROM of the prior side at 1 year after the surgery was ( 192±20.9 ) in group C, which was smaller than ( 242±22.8 ) in group A and ( 242±22.8 ) in group B. In all 3 groups, the Harris scores at 1 year after the surgery was significantly higher than the preoperative scores. No statistically significant differences existed in the Harris score of the lateral side in 3 groups at 1 year after the surgery. The Harris score of the prior side in group C was ( 80.3±9.8 ), which was obviously lower than ( 91.4±7.9 ) in group A, ( 93.5±9.1 ) in group B and ( 90.8±7.3 ) on the lateral side in group C.Conclusions To acquire optimal recovery of joint ROM and function, the interval time of bilateral THA should be shortened as much as possible in the patients with bilateral hip joint ankylosis.
Keywords：ArthroplastyreplacementhipAnkylosisHip jointJoint prosthesis
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 272-275 )