BioMed Research International / 2018 / Article / Tab 3

Review Article

Bilateral Hip Arthroplasty: When Is It Safe to Operate the Second Hip? A Systematic Review

Table 3

Summary of selected articles including evidence quality assessment and results of the studies.

StudyType of StudySample SizeSurgery definition Mean age (years)Quality of evidenceFindings (safety outcomes)
SimultaneousStaged

Eggli et al. 1996Retrospective cohort255(i) Simultaneous
(ii) Staged less than 6 weeks
(iii) Stage 6 weeks and 6 months
5461,3Very low
(i) Low power
(ii) Selection bias
No difference between 3 groups

Alfaro- Adrián et al. 1999Retrospective cohort202(i) Simultaneous
(ii) Staged 2 weeks and 2 months
6563,9Very low
(i) Low power
No difference between groups

Parvizi et al. 2006Retrospective cohort196(i) Simultaneous
(ii) Staged 25 days and 10 months
5365Very low
(i) Low power
(ii) Selection bias
No difference between groups

Bhan 2006Randomized clinical trial168(i) Simultaneous
(ii) Staged 3 and 7 months
46,543,8Moderate
(i) Low power
More bleeding in staged surgery, more transfusion for simultaneous surgery; no difference in complications

Berend et al. 2007Retrospective cohort277(i) Simultaneous
(ii) Staged 2 weeks and 2 years
52,757,3Very low
(i) Poor definition for staged surgery
More complications in simultaneous surgery

Hooper et al. 2009Register, nested cohort2092(i) Simultaneous
(ii) Staged without report of interval between surgeries
6161Very low
(i) Selection bias
No difference between groups

Aghayev et al. 2010Register, nested cohort1819(i) Simultaneous
(ii) Staged less than 6 months
(iii) Staged 6 months and 5 years
5962Very low
(i) Poor outcome definition
No difference between groups

Saito et al. 2016Retrospective cohort89(i) Simultaneous
(ii) Staged in the same hospitalization
5961,9Very low
(i) Low power
No difference between groups

Johnston et al. 2011Retrospective cohort594(i) Simultaneous
(ii) Stage without report of interval between surgeries
61,566,5Very low
(i) Selection bias
More adverse events in simultaneous surgery

Lindberg-Larsen et al. 2013Register, nested cohort680(i) Simultaneous
(ii) Staged less than 6 months
(iii) Staged 6 months and 18 months
55,766,8Low
(i) Selection bias
No difference between groups

Rasouli et al. 2014Retrospective cohort16330(i) Simultaneous
(ii) Staged in the same hospitalization (1 to 35 days)
58,460,3Moderate
(i) Selection process not clear
More complications in staged surgery during the same in-hospital stay

Garland et al. 2015Register, nested cohort42238(i) Simultaneous
(ii) Staged less than 6 months
(iii) Staged 6 months and 1 year
(iv) Staged more than 1 year
<50 years = 18,3%<50 years = 3%, 5,3%, 7,8%Moderate
(i) Selection bias
Simultaneous surgery is safe in young and healthy patients

Quadri et al. 2015Retrospective cohort48(i) Simultaneous
(ii) Staged without report of interval between surgeries
3942VERY LOW
(i) Low Power
(ii) Selection Bias
No difference between groups