When the femoral nerve becomes entrapped, it can inhibit the function of the psoas, which plays a major role in stabilizing the lumbar spine. The femoral nerve provides innervation to the psoas. When that nerve gets glued down by adhesion, proper neural signaling is disrupted. The result isn’t always sharp nerve pain — it’s often muscle inhibition. A inhibited psoas can no longer stabilize the spine effectively, forcing the low back to compensate, leading to chronic low back pain and instability