Abstract
The use of ultrasound (US) guidance for the injection and aspiration of joints has improved accuracy. The aim of this study was to determine if differences exist in the level of patient satisfaction, functionality, and the quality of life in adult patients receiving US-guided (USG) versus landmark-guided (LMG) knee procedures. This prospective, randomized study enrolled 41 patients undergoing knee procedures to USG or LMG groups. visual analogue scale (VAS) for pain, knee injury and osteoarthritis outcome score (KOOS), and patient satisfaction score on a 5-point Likert scale were measured pre-procedure, immediate (< 30min) and late (4-6weeks) post-procedure. Thirty-seven patients were included in the final analysis after exclusion of 4 dropouts (18 in LMG arm, 19 in USG arm). Compared with LMG group, patients in the USG group had significantly better improvement in pain immediately (VAS 1.63 ± 1.6 (95% CI 0.91, 2.35) vs 4.05 ± 2.5 (95% CI 2.90, 4.62), p = 0.001) and later post-procedure (VAS 2.68 ± 2.0 (95% CI 1.78, 3.58) vs 6.38 ± 3.8 (95% CI 4.62, 8.14) p = 0.004) and satisfaction scores immediately (4.89 ± 0.3 (95% CI 4.76, 5.02) vs 4.11 ± 1.0 (95% CI 3.65, 4.57), p = 0.002) as well as delayed post-procedure (4.52 ± 0.9 (95% CI 4.12, 4.92) vs 3.38 ± 1.6 (95% CI 2.64, 4.12), p = 0.028). USG knee procedures were associated with higher patient satisfaction, both immediately after the procedure and after 4-6weeks compared with LMG knee procedures. Key Points •This prospective study is the first one to look at patient satisfaction as an outcome measure after intra-articular steroids knee injections. •USG (US-guided) knee procedures were associated with higher patient satisfaction compared with LMG (landmark-guided) knee procedures. •USG knee procedures resulted in greater improvement in symptoms, pain, and quality of life scales after 4-6weeks compared with LMG knee procedures.
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