What is the fine-grained topic of the following text: We aim to (1) quantify and correlate outpatient opioid need after total knee and hip arthroplasties (TKA and THA) with preoperative objective pain pressure thresholds (PPTs) and subjective pain measures and (2) report incidence of nonsurgical opioid prescriptions 6 weeks postoperatively. Only return the topic.
Quantifying and correlating outpatient opioid need after total knee and hip arthroplasties with preoperative pain measures, and reporting incidence of nonsurgical opioid prescriptions postoperatively.