• Reduction of the pain level by 30% as measured on the visual analog scale of 0-100 mm on days 1, 3, 7, 14, 21, 28.
  
• and/or reduction the use of back-up medication on days 1, 3, 7, 14, 21, 28.
  

• Improvement in the quality of life and sleep.
  

Inclusion Criteria:

• Patients aged 18 or more.
• Accidental rib fracture (one or more) visible on a lung\thorax radiography, or on a CT Scan of the thorax, as determined by the emergency physician or the radiologist.
• The rib fracture is the main cause of pain.
• The patient says yes to the question "do you wish something for your pain" (the result of the quantitative assessment of the pain in not taken into consideration) or the patient has already received an analgesic before the initial assessment by the emergency physician.
• The patient is seen no more than 48 hours after the accident.

Exclusion Criteria:

• The patient is already receiving SC.
• Allergy or intolerance to SC, oxycodone chlorhydrate or acetaminophen
• Active neoplasia history for at least 5 years
• Toxicomania history as revealed by case history
• Osteoporosis linked to hyperparathyroidism
• Patient already using opiate analgesics or other analgesics on a regular basis (excluding aspirin at doses of 325 mg or less, as a prophylactic for cardiovascular diseases and under stable posology for at least 15 days)
• Steroid use within the past month
• Pregnancy, breast feeding
• Non-availability of patient for telephone follow-ups or follow-up appointments.