Factors that predict short-term complication rates after total hip arthroplasty

Area of Science:

• Orthopedic Surgery
• Health Services Research
• Patient Outcomes

Background:

• Uncertainty exists regarding the relative importance of patient comorbidities versus provider factors like hospital volume in predicting total hip arthroplasty (THA) complication rates.
• Identifying key predictors of THA complications is crucial for improving patient safety and outcomes.

Purpose of the Study:

• To identify and analyze patient-specific and provider-specific factors that predict short-term complications following primary total hip arthroplasty (THA).

Main Methods:

• A retrospective analysis of discharge data from 138,399 patients undergoing primary THA in California (1995-2005).
• Complication rates (mortality, infection, dislocation, revision, fracture, neurologic injury, thromboembolism) within 90 days were regressed against patient factors (age, gender, race, income, comorbidity score) and provider factors (hospital volume, teaching status, location).
• Level II prognostic study design.

Main Results:

• Patients treated at low-volume hospitals (below 60th percentile) had a significantly higher aggregate risk of short-term complications (OR, 2.00) compared to those at high-volume hospitals.
• Increased risk of complications was associated with higher Charlson comorbidity scores, diabetes, rheumatoid arthritis, advanced age, male gender, and Black race.
• Hispanic and Asian patients demonstrated lower risks of complications.

Conclusions:

• Both patient characteristics and provider factors significantly influence the risk of short-term complications after total hip arthroplasty (THA).
• Findings can aid in patient education and the anticipation of perioperative risks for diverse patient populations undergoing THA.