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General Orthopaedics

A COMPARISON OF FUNCTIONAL OUTCOMES BETWEEN ELECTIVE CORONARY BYPASS GRAFT SURGERY AND ELECTIVE LOWER EXTREMITY JOINT REPLACEMENT SURGERY

12th Combined Meeting of the Orthopaedic Associations (AAOS, AOA, AOA, BOA, COA, NZOA, SAOA)



Abstract

Background

Deciding how to allocate scarce surgical resources is a worldwide issue. These decisions are difficult when considering procedures aimed primarily at improving functional quality of life, such as lower extremity joint replacement (LEJR) surgery, and procedures perceived as life preserving which also have impacts on physical function, such as coronary artery bypass graft (CABG) surgery. Comparing functional outcomes of these two procedures may provide further evidence to guide resource allocation decisions.

Methods

We compared patient-reported functional outcomes following CABG and LEJR surgery using standardised, validated outcome metrics. A retrospective review of prospectively collected pre- and post-operative health related quality of life (SF-36) measures were conducted from 105 patients undergoing elective CABG and 105 elective LEJR surgery patients. Patients were matched based on gender and age.

Results

Pre-operatively, CABG patients reported statistically superior (p< 0.05) Physical Functioning, Bodily Pain, and Physical Component summary SF-36 scores compared to LEJR patients. However, their pre-operative General Health scores were lower. Surgery resulted in improvements in SF-36 scores for all patients, with statistically significant improvements in Bodily Pain and Physical Component scores occurring in both groups. Interestingly, improvements in 8 out of 10 SF-36 index scores were greater in the LEJR group, with the exception of Vitality and the Mental Component Summary. The pre-operative pattern of statistically better Physical Functioning in the CABG group, and superior General Health scores in the LEJR group remained following surgery.

Conclusion

It appears that, despite being matched for age and gender, significant pre-operative general health differences exist between CABG and LEJR patients that persist post-operatively. While surgery results in significant improvements for both groups, CABG patients enjoy greater improvement in General Health scores while LEJR patients benefit from greater improvements in Bodily Pain scores. Further research is underway, examining how these differences reflect disease-specific scores and health care resource utilisation.


E Bohm, Concordia Joint Replacement Group, University of Manitoba, 337-1155 Concordia Ave, Winnipeg, Canada R2K 2M9