Intra-operative digital imaging ASSURING THE ALIGNMENT OF COMPONENTS WHEN UNDERTAKING TOTAL HIP ARTHROPLASTY

被引:26
作者
Hambright, D. [1 ]
Hellman, M. [1 ]
Barrack, R. [1 ]
机构
[1] Washington Univ, Sch Med, Barnes Jewish Hosp, Dept Orthopaed Surg, 660 South Euclid,Campus Box 8233, St Louis, MO 63110 USA
关键词
LIMB-LENGTH DISCREPANCY; ACETABULAR COMPONENT; LEG-LENGTH; POLYETHYLENE WEAR; POSITION; REPLACEMENT; ORIENTATION; DISLOCATION; FLUOROSCOPY; IMPROVEMENT;
D O I
10.1302/0301-620X.100B1.BJJ-2017-0596.R1
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Aims The aims of this study were to examine the rate at which the positioning of the acetabular component, leg length discrepancy and femoral offset are outside an acceptable range in total hip arthroplasties (THAs) which either do or do not involve the use of intra-operative digital imaging. Patients and Methods A retrospective case-control study was undertaken with 50 patients before and 50 patients after the integration of an intra-operative digital imaging system in THA. The demographics of the two groups were comparable for body mass index, age, laterality and the indication for surgery. The digital imaging group had more men than the group without. Surgical data and radiographic parameters, including the inclination and anteversion of the acetabular component, leg length discrepancy, and the difference in femoral offset compared with the contralateral hip were collected and compared, as well as the incidence of altering the position of a component based on the intra-operative image. Results Digital imaging took a mean of five minutes (2.3 to 14.6) to perform. Intra-operative changes with the use of digital imaging were made for 43 patients (86%), most commonly to adjust leg length and femoral offset. There was a decrease in the incidence of outliers when using intra-operative imaging compared with not using it in regard to leg length discrepancy (20% versus 52%, p = 0.001) and femoral offset inequality (18% versus 44%, p = 0.004). There was also a difference in the incidence of outliers in acetabular inclination (0% versus 7%, p = 0.023) and version (0% versus 4%, p = 0.114) compared with historical results of a high-volume surgeon at the same centre. Conclusion The use of intra-operative digital imaging in THA improves the accuracy of the positioning of the components at THA without adding a substantial amount of time to the operation.
引用
收藏
页码:36 / 43
页数:8
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