Table 1: Demographics and baseline characteristics.

Parameters ITT Population (N=394) n (%)
   Number of Patients treated Bilaterally 66 (16.7)
   Number of Patients treated Unilaterally 328 (83.2)
   Age (years), mean±SD 57.6±9.8*
   Weight (kg), mean±SD 70.7±11.5
   Height (cm), mean±SD 160.1±8.8
   BMI (kg/m2), mean±SD Normal (18.5–24.9) Overweight (25–30) Obese (≥ 30.1) 27.7±4.5 106 (26.9) 199 (50.6) 88 (22.5)
   Gender       Male       Female   109 (27.7) 285 (72.3)
   Time since OA diagnosis, months (years), mean±SD 1.4±2.8
Target Knee n (%)
   Right Knee 220 (55.8)
   Left Knee 174 (44.2)
   Prior treatment/medications for target knee, repetition 203 (51.5)
   Anteroposterior and Lateral (OR) Anteroposterior and Skyline in target knee 394 (100)
   Femoro-patellar at 30°, repetition 352 (89.3)
Kellgren-Lawrence grade in tibio-femoral compartment of the target knee n (%)
   Grade 1 20 (5.1)
   Grade 2 151 (38.3)
   Grade 3** 223 (56.6)
Anaesthetics used in target knee (prior to the injection) n (%)
   Topical 20 (5.1)
   Local 127 (32.2)
Approach used for injection n (%)
   Anterolateral 1 (0.3)
   Superolateral 160 (40.6)
   Superomedial 116 (29.4)
   Inferolateral 78 (19.8)
   Inferomedial 39 (9.9)
Medical and Surgical History  n (%)
   Cardiovascular diseases    Musculoskeletal disorders    Metabolic/endocrine/nutritional disorders 98 (43.6) 79 (35.1) 77 (34.2)

* N for age is 392 as age was missing for 2 patients.
** 1 patient with grade 4 OA was included with the grade 3 patient group.

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