The Journal of arthroplasty
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Randomized Controlled Trial Comparative Study
Is continuous adductor canal block better than continuous femoral nerve block after total knee arthroplasty? Effect on ambulation ability, early functional recovery and pain control: a randomized controlled trial.
Total knee arthroplasty is associated with intense, early post-operative pain. Femoral nerve block is known to provide optimal pain relief but reduces the strength of the quadriceps muscle and associated with the risk of falling. Adductor canal block is almost pure sensory blockade with minimal effect on quadriceps muscle strength. We prospectively randomized 100 patients in two groups' continuous adductor and femoral block group. Ambulation ability (Timed up go, 10-m walk, 30 s chair test), time to active SLR, quadsticks, staircase competency, ambulation distance was significantly better (P value < 0.001) in adductor canal group whereas pain scores, opioid consumption showed no significant difference. Adductor canal block provided better ambulation and early functional recovery but without superior analgesia than femoral nerve block post TKA. ⋯ Level III, therapeutic study.
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As an effective antipyretic with a yet-unknown mechanism-of-action, intravenous (IV) acetaminophen use for total hip arthroplasties (THA) may worsen perioperative hypothermia when combined with the known hypothermia-inducing effects of general anesthesia (GA), affecting wound healing, recovery times, and patient satisfaction. This retrospective chart review of primary THA cases compared perioperative heat loss for patients who received IV acetaminophen with GA (group A, n = 74) to those receiving GA alone (group B, n = 197). ⋯ No significant temperature differences existed between group A (-0.33°C, SD = 0.36) and group B (-0.30°C, SD = 0.34, P > 0.05). IV acetaminophen use for THA does not appear to promote hypothermia under general anesthesia.
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We analyzed clinical outcomes of partial lateral patellar facetectomy and medial reefing in patients with lateral patellar facet syndrome with painful patellar-retaining total knee arthroplasty. 34 patients were followed for a mean of 40 months. All 34 patients were matched with those having secondary patellar resurfacing without facetectomy. Both groups experienced significant pain relief and range of motion improvement. ⋯ There were significant differences in postoperative lateral patellar tilt and congruency angle in both groups. The mid-term results for LPF with medial reefing are promising to resolve pain in patients with lateral patellar facet syndrome in patellar-retaining TKA. Therapeutic level III (retrospective comparative study).
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Randomized Controlled Trial
Prospective, randomized trial to evaluate efficacy of a thrombin-based hemostatic agent in total knee arthroplasty.
Total knee arthroplasty (TKA) can be associated with substantial blood loss, leading to increased morbidity and transfusion rates. The study objective was to evaluate routine use of a thrombin-based topical hemostatic matrix in reducing blood loss and transfusion requirements in primary TKA. 108 patients were enrolled in a prospective, randomized, single-center trial. Patients receiving the hemostatic agent demonstrated a lower mean calculated blood loss (1325.2±464.8mL vs. control, 1509.3±432.8mL; P=0.02), drain output (415.6±202.0mL vs. control, 579.9±306.7mL; P=0.008), and length of stay (3.3±0.8days vs. control, 3.7±1.1days; P=0.03), without a statistically significant difference in mean hemoglobin loss or transfusion requirements. The clinical utility of this hemostatic agent to reduce transfusions after uncomplicated, primary TKA continues to remain unclear.