Mahan MC, et al. - This study entailed comparison between spinal mepivacaine and bupivacaine for postoperative measures in patients undergoing primary total knee arthroplasty (TKA). Findings demonstrated that mepivacaine for spinal anesthesia with TKA had adequate duration to complete the surgery. Furthermore, researchers found that mepivacaine facilitated a more rapid recovery with less urinary complications and a shorter length of stay. They observed no worse pain control or transient nerve symptoms afterwards in those who received mepivacaine.