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Table 5 Ultrasound Parameters: Full Analysis Set

From: Intra-articular use of a medical device composed of hyaluronic acid and chondroitin sulfate (Structovial CS): effects on clinical, ultrasonographic and biological parameters

Ultrasound Parameter   Visit 2 (baseline)   Visit 6(12 weeks)
Articular effusion, n (%)   30   30
No liquids   12 (40.0)   17 (56.7)
Present only at isometric contraction   14 (46.7)   11 (36.7)
Present at rest and at isometric contraction   4 (13.3)   2 (6.7)
Height by isometric contraction, mm, mean ± SD 18 3.20 ± 1.682 13 3.34 ± 1.251
Synovial thickness in extension, mm, mean ± SD 30 1.72 ± 1.015 30 1.60 ± 0.972
Synovial thickness in 45° flexion, mm, mean ± SD 30 2.06 ± 1.196 30 1.83 ± 1.086
Synovial thickness in external recess, mm, mean ± SD 30 1.81 ± 0.993 30 1.57 ± 0.665
Synovial thickness total of 3 measurements, mm, mean ± SD 30 5.58 ± 2.591 30 5.00 ± 2.139
Popliteal cyst present, n (%) 29 6 (20.7) 30 7 (23.3)
Popliteal cyst volume, mm3, mean ± SD 4 471.09 ± 869.230 6 2924.73 ± 3783.539
  1. mm = millimeter; n = number of patients; SD = standard deviation; Note: Percentages are based on available information.