The objective of this trial was to assess the efficacy and safety of 7.5 mg meloxicam i.m. once daily compared with 7.5 mg meloxicam tablets once daily p.o. in patients with osteoarthritis over a time period of 7 days.

This was a randomized (1:1), open-label, multi-center, active-control, parallel-group study to compare the efficacy of 7.5 mg meloxicam i.m. once daily compared with 7.5 mg meloxicam tablets once daily p.o. in patients with osteoarthritis over a time period of 7 days.

The primary endpoint: Pain on active movement,

The secondary endpoint:

• Pain at rest
• Patient status with regard to change of arthritic condition assessed by the patient/investigator
• Patient's assessment of arthritic condition
• Onset of action
• Time to maximum pain relief
• Paracetamol consumption
• Withdrawals due to inadequate efficacy
• Final global assessment of efficacy by the patient/investigator

Safety endpoints

• Local tolerability assessment of the injections by the patient/investigator
• Patient's /Investigator's assessment of overall tolerability
• Number, nature and severity of adverse events
• Laboratory investigations
• Withdrawals due to safety reasons

Patients eligible for the trial who met all inclusion and exclusion criteria and who gave their informed consent were randomized to one of two treatment groups (i.e. meloxicam ampoule or meloxicam tablet).

The study period totaled 8-14 days included screening, randomisation, study drug administration, and 7-day follow-up. The relevant assessment were performed on the day of randomisation and 7-day follow up.

Study Hypothesis:

The null hypothesis of interest is that the primary endpoint for meloxicam ampoule is inferior to oral meloxicam. The alternative is that meloxicam ampoule is noninferior to the oral meloxicam .

Comparison(s):

The primary endpoint of the study was to assess pain on active movement by VAS prior and after the treatment.

Inclusion Criteria:

• Male or female aged 18 years or above
• Patients suffering from acute and painful exacerbation of osteoarthritis of the hip or knee.

The diagnosis must be based on

• clinical signs and symptoms or

• x-ray diagnosis plus clinical signs and symptoms

  • Assessment of pain on active movement (by the patient) must exceed 40 mm on a 100 mm visual analogue scale (VAS)
  • Symptoms of OA requiring administration of NSAIDs
  • Willingness and ability to provide written informed consent.

Exclusion Criteria:

• Known or suspected hypersensitivity to the trial drugs or their excipients, analgesics, antipyretics or NSAIDs
• Any clinical evidence of active peptic ulceration during the last six months
• Pregnancy or breastfeeding (precaution : attention should be drawn to reports that NSAIDs were reported to decrease the effectivity of intrauterine devices)
• Asthma, nasal polyps, angioneurotic oedema or urticaria following the administration of aspirin or NSAIDs
• Concomitant treatment with anti-coagulants (including heparin), lithium
• Concomitant administration of other NSAIDs or analgesic agents (except paracetamol up to 4g/day)
• Administration of any NSAID during the last 2 days (3 days for any oxicam) prior to the first administration of the trial drug
• Concomitant treatment with an oral corticosteroid initiated or with an altered dose over the previous month
• Parenteral or intraarticular administration of corticosteroids in the previous month
• Any i.m. injection during the previous 7 days
• Any contra-indication to i.m. injections
• Clinical evidence of or known severe cardiac, hepatic, renal, metabolic, haematological disease, mental disturbance, ulcerative colitis
• Any other rheumatological or non-rheumatological disease that could interfere with the evaluation of efficacy and safety
• Serum creatinine 125 % of the upper limit of normal range ; aspartate transferase (AST/SGOT) and/or alkaline transferase (ALT/SGPT) 200 % of the upper limit of normal range
• Platelet count < 100,000/mm3 ; leucocytes count < 3,000/mm3
• Synovectomy in the previous month or during the trial
• Participation in another clinical trial during this study or during the previous month
• Previous participation in this trial
• Patient unable to comply with the protocol
• Concomitant therapy with specific symptomatic drug of OA, such as chondroitin sulphate, diacerhein, initiated or with an altered dose over the previous 3 months.
• Intraarticular administration of hyaluronic acid in the previous month
• Patients where physiotherapy will be changed throughout the study