Phase II Trial of Abaloparatide vs. Placebo in Post-Menopausal Women and Abaloparatide in Men Receiving Initial Spinal Fusion Surgery
This is a prospective randomized, double-blinded, placebo-controlled, phase 2, 12-month pilot to study the efficacy of abaloparatide in postmenopausal women needing lumbar spinal fusion surgery. A total of 72 women with low bone mass who are scheduled to undergo spinal fusion surgery will be randomized 2:1 in a blinded fashion to receive either 80 mcg of abaloparatide subcutaneously (SC) every day or an identical-appearing placebo SC for 6 months. As well as a total of 24 men in an open-label design will be enrolled as an extension to this study. The total anticipated enrollment updated to 97. Outcomes include surgical outcomes at one year, pain, and fusion bone mass volume (FBMV) as a marker of bone union at 6 months and 1 year.
• Postmenopausal women (defined as \>12 months since last menstrual cycle) OR men
• Age of 50 years or older
• Requiring posterolateral lumbar spine fusion surgery (L1-2; L2-3; L3-4; L4-5, L5-S1) with single or multi-level fusion for degenerative conditions of the lumbar spine (including lumbar degenerative disk disease, severe instability, high grade spondylolisthesis, deformity, degenerative scoliosis, pseudoarthrosis, and spinal stenosis) under the care of spine surgeons at the Hospital for Special Surgery.