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Serum C-reactive protein levels after total hip and knee arthroplasty
R O Niskanen1, O Korkala, H Pammo
1Lahti City Hospital, Finland.
Insights
Serum C-reactive protein (CRP) levels increase after surgery, peaking two to three days post-hip or knee arthroplasty. Levels then decline rapidly, unaffected by prosthesis type, but complications can cause later increases.
Area of Science:
- Biochemistry
- Orthopedic Surgery
- Clinical Chemistry
Background:
- Serum C-reactive protein (CRP) is a key biomarker for inflammation.
- Surgical procedures, particularly joint replacements, are associated with significant inflammatory responses.
Purpose of the Study:
- To investigate the postoperative C-reactive protein (CRP) kinetics following hip and knee arthroplasty.
- To determine if prosthesis type (cemented vs. uncemented) influences CRP levels.
- To assess the impact of major postoperative complications on CRP trends.
Main Methods:
- Prospective monitoring of serum CRP levels in patients undergoing hip and knee arthroplasty.
- Serial blood sampling at defined postoperative intervals.
- Comparison of CRP trends between cemented and uncemented prosthesis groups.
- Correlation of CRP levels with the occurrence of major postoperative complications.
Main Results:
- A consistent elevation in serum CRP levels was observed following all operations.
- Maximal CRP values typically occurred on postoperative days two and three.
- A rapid decrease in CRP levels was noted after the peak.
- No significant difference in CRP profiles was found between cemented and uncemented arthroplasty.
- Major postoperative complications were associated with a secondary rise in CRP levels at one and two weeks post-surgery.
Conclusions:
- Postoperative CRP levels follow a predictable pattern after hip and knee arthroplasty.
- CRP monitoring can help identify potential major complications.
- Prosthesis fixation method does not appear to influence the early postoperative CRP response.
Abstract:
Any operation induces an elevation in the level of serum C-reactive protein (CRP). After hip and knee arthroplasty the maximal values are seen on the second and third postoperative days, after which the CRP decreases rapidly. There is no difference between patients with cemented or uncemented prostheses. Major postoperative complications may cause a further increase in CRP levels at one and two weeks.