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Flexion Study

Patients with Osteoarthritis of the Hip

Patients with Osteoarthritis of the hip.


  • To assess the efficacy of study drug on pain following an intra-articular (IA) injection in patients with hip osteoarthritis (OA).
  • To evaluate Study drug on function, global impression of change, stiffness, quality of life, treatment satisfaction, sleep quality and consumption of rescue medication in patients with hip OA.
  • To characterize any change in your symptoms and overall condition.
  • To evaluate the safety of the assess the overall safety of a second injection.
  • Information regarding safety and side effects that may occur will also be collected.


  • Study drug or saline placebo will be administered as a single IA injection with a 12-week follow-up period in the double-blind phase.
  • Patients eligible for the second injection in the open-label phase at Week 12 will receive an open-label injection.

Cherian Sajan, MD – Principal Investigator
Cesar A. Lassalle-Nieves, MD – Sub-Investigator


  • Patients 40 to 80 years of age, inclusive, on the day of randomization (Day 1)
  • Body Mass Index (BMI) ≤ 40 kg/m2
  • Symptoms (including pain) associated with OA of the index hip for ≥ 3 months prior to Screening visit (patient self-report is acceptable). Moderate to severe index hip pain due to OA for >15 days over the last month (as reported by the patient)

Each subject will be asked to visit the clinic 11 times total over the period 9. Most visits will take approximately 1 to 2 hours.

1693 Lee Road Winter Park, Fl. 32789

Qualified participants may receive up to $975 for time and travel

Recruitment Department: 407-203-7936

Annular Disc Tears

  • 18yrs and older
  • Single or multilevel lumbar disc tears
  • Prior discography, MRI needed
  • No active litigation related to lumbar pain

Treating Pain & Changing Lives

Nobody wants to live in pain. The patients featured in these stories suffered real pain and wanted their lives back — so they took action. And so can you.

  • Richard Carroll

    They make me feel very welcome and I notice all the other patients around me are made to feel welcome, too. I definitely feel that ... Read Full Story

  • Dianne N.'s Story

    Coming to National Spine and Pain Centers has been a very positive experience for me. I would highly recommend them. Read Full Story

  • William F.'s Story

    My pain now is manageable. And that's all I can ask for. At the end of the day, I'm never going to be pain free, but this is ... Read Full Story