Conditions: Chronic Pain Osteoarthritis
Keywords: Osteoarthritis Pain Assessment Tapentadol Centrally acting analgesic Chronic pain due to osteoarthritis
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 224
Healthy volunteers: no

Brief summary:
The main objective of the study is to evaluate the effectiveness, tolerability, and safety of tapentadol hydrochloride prolonged release in participants suffering from severe chronic pain due to osteoarthritis of the knee who are taking either WHO Step I or Step II analgesics or no regular analgesics. This is a clinical effectiveness trial designed to establish a link between anticipated clinical outcomes and the clinical practice by means of selected measures of clinical and subject-reported outcome.

The trial will compare the effectiveness of previous analgesic treatment (either WHO Step I or Step II analgesics or no regular analgesics) with that of tapentadol hydrochloride prolonged release (PR) treatment during defined periods of evaluation.

Detailed description:

Arms:
arm 1: Tapentadol PR was given orally twice a day. A maximum of 2 oral Tapentadol IR tablets per day, with a minimum of a 4 hour interval between doses, were taken if there were acute pain episodes. The total daily dose of Tapentadol PR and IR were not permitted to exceed 500 mg per day.

Interventions: intervention 1: Tapentadol
Intervention descriptions: intervention 1: Tapentadol Prolonged Release (PR) Titration and Optimal Dose Period: Starting at 50 mg Tapentadol PR twice daily, adjusting at 50 mg PR steps (upwards or downwards) as necessary to achieve a balance between pain relief and a satisfactory level of tolerability. Participants were not permitted to exceed 500 mg of Tapentadol per day.

Maintenance Period: Participants continuing on the dose established in the previous period.

Protocol document: