Effect of Steroid in Local Infiltration Analgesia in One-Stage Bilateral Total Knee Arthroplasty: A Paired-Randomized Controlled Study.

Although local infiltration analgesia (LIA) is effective in relieving pain after total knee arthroplasty (TKA), its effect is short lasting and the optimal combination of drugs is unknown. Steroids being a potent and long-acting anti-inflammatory drug might extend LIA's effect. This study aims to evaluate the role of steroids in LIA. This is a paired-randomized controlled study involving one-stage bilateral TKA patients. LIA containing ropivacaine, ketorolac, and adrenaline with or without triamcinolone was given. One knee was randomized to receive LIA with steroids, while the other received LIA without steroids. The primary outcome was knee pain in terms of the visual analog scale (VAS). Secondary outcomes were rehabilitation progress, functional scores, and complications. Outcomes were compared between the knees of the same patient and documented up to 1 year. A total of 45 patients (90 TKAs) were included. LIA with steroid knees showed lower VAS score at rest and during activity from postoperation day 1 to 5 and at 6 weeks (p < 0.05). Passive and active range of movement was also greater in LIA with steroid group from day 1 to 7 and day 2 to 5, respectively (p < 0.05). Steroid-treated knees also achieved active straight leg raise earlier (1.2 vs. 2.0 days, p < 0.05). No differences in Knee Society Score and complication rates between both groups. Steroids in LIA offer additional and extended benefit in pain control and rehabilitation after TKA, while no adverse effects were found up to 1-year follow-up.

Combination Effect of High-Dose Preoperative and Periarticular Steroid Injection in Total Knee Arthroplasty. A Randomized Controlled Study.

BACKGROUND: Postoperative pain remains a major barrier to a patient's recovery after total knee arthroplasty (TKA). Periarticular corticosteroids in local infiltration analgesics (LIA) and high-dose intravenous corticosteroids have individually shown to improve pain control after TKA. However, potential interactions between them have not been investigated. This study aims to evaluate any combination effect of both routes of corticosteroids in TKA. METHODS: This is a double-blinded, paired, randomized controlled trial involving 1-stage bilateral TKAs. All received 16 mg of dexamethasone intravenously. One knee was randomized to receive LIA with 40 mg of triamcinolone, while the other knee receives LIA without corticosteroids. For each patient, one knee was affected by intravenous steroids only, while the other was under the combined effect of intravenous and periarticular steroids (IVPAS). Knee pain, Southampton wound scores, and functional knee scores (Knee Society Knee Score and Oxford Knee Scores) were compared between knees of the same patient. RESULTS: Forty-six patients (92 TKAs) were included. IVPAS knees showed significantly lower visual analog scale scores from day 1 to 6 weeks (P < .05) and a larger range of movement from day 2 to 4 (P < .05). IVPAS knees achieved active straight leg raise earlier than intravenous steroids (1.6 vs 2.3 days, P < .05). No differences in Southampton wound scores and functional knee scores for up to 1 year. CONCLUSION: Combining intravenous and periarticular corticosteroids improved pain control and recovery after TKA with no increase in wound complications up to 1 year.

Multimodal periarticular injection vs continuous femoral nerve block after total knee arthroplasty: a prospective, crossover, randomized clinical trial.

This study compares the efficacy of pain control using continuous femoral nerve block (FNB) and multimodal periarticular soft tissue injection. This is a randomized, crossover, clinical trial. Sixteen patients having bilateral osteoarthritis of the knee scheduled for staged total knee arthroplasty were randomized to receive either FNB (0.2% ropivacaine), via indwelling catheter for 72 hours, or multimodal periarticular soft tissue injection in the first stage. In the second stage, they received the opposite treatment. The primary outcome measure was morphine consumption by patient-controlled analgesia in the first 72 hours postoperatively. Cumulative morphine consumption as well as rest pain and motion pain in the first 72 hours was comparable between the 2 groups. The functional outcomes did not differ significantly. We conclude that multimodal periarticular soft tissue injection provides comparable analgesia to continuous FNB after total knee arthroplasty.