Table 2

Patient clinical characteristics

Patient clinical characteristicsPatients
n=97
n (%)
Location of osteoarthritis
 One knee only24 (24.7)
 Both knees73 (75.3)
Time since onset of noticeable symptoms
 Less than 3 years ago16 (16.5)
 Between 3 and 5 years ago33 (34)
 More than 5 years ago48 (49.5)
Time since diagnosis
 Less than 3 years ago23 (23.7)
 Between 3 and 5 years ago29 (29.9)
 More than 5 years ago45 (46.4)
Type of doctor seen for KOA
 Rheumatologist11 (11.3)
 Orthopaedist/orthopaedic surgeon58 (59.8)
 Primary care18 (18.6)
 Other10 (10.3)
Prior treatments for knee OA
 Acetaminophen*60 (61.9)
 OTC NSAIDS†56 (57.7)
 Prescription-only NSAIDS47 (48.5)
 Prescription-only pain medications‡53 (54.6)
 Topical creams or patches70 (72.2)
 Magnetic pulse therapy17 (17.5)
 IACS§65 (67)
 Viscosupplement¶ (IAHA)16 (16.5)
 TA-ER97 (100)
 Knee surgery35 (36.1)
How often are you aware of your KOA and symptoms?
 Weekly or longer11 (11.4)
 Daily45 (46.4)
 All the time or constantly41 (42.3)
How have you modified your lifestyle to avoid potentially damaging activities to your knee(s)?
 Mildly or not at all20 (20.6)
 Moderately38 (39.2)
 Significantly39 (40.2)
How much are you troubled by a lack of confidence in your knee(s)?
 Mildly or not at all16 (16.5)
 Moderately39 (40.2)
 Significantly42 (43.3)
In general, how much difficulty do you have with your knee(s)?
 Mildly or none6 (6.2)
 Moderate54 (55.7)
 Severe37 (38.1)
  • *For example, Tylenol.

  • †For example, Advil/ibuprofen.

  • ‡For example, Codeine, tramadol, hydrocodone, hydromorphone, morphine, methadone, oxycodone, fentanyl.

  • §Other than triamcinolone acetonide extended-release.

  • ¶Hyaluronic acid injection.

  • IACS, intra-articular injections of corticosteroids; IAHA, intra-articular hyaluronic acid; KOA, knee osteoarthritis; NSAID, non-steroidal anti-inflammatory drug; OA, osteoarthritis; OTC, over the counter; TA-ER, triamcinolone acetonide extended-release.