The goal of this observational study is to learn about the role of pre-operative paraspinal muscle atrophy in outcomes of lumbar spine fusion surgeries in patients with degenerative lumbar spine diseases. The main question it aims to answer is:
Does paraspinal muscle atrophy worsen lumbar spine fusion surgeries outcomes? Participants undergoing lumbar spine fusion surgeries as part of their treatment for degenerative lumbar spine diseases will answer survey questions about their low back pain and daily activities for 1 year.