The multifidus is a group of small muscles located along the spine. These muscles play a crucial role in stabilizing the vertebrae and supporting the spine during movement. They help maintain proper posture and contribute to overall spinal health. The multifidus muscles are particularly important for activities that require balance and coordination. They work in conjunction with other core muscles to provide stability, especially during lifting or twisting motions. Strengthening the multifidus can help prevent back pain and improve athletic performance.