 [ Symptoms ] what types of exercise are contraindicated for someone who has had a l5 s1 spinal fusion screws were removed my fusion has been complete for several years but i still have chronic pain excercise can help but i would like to know what not to do with having my l5 s1 vertebrae fused also which types of exercise and stretching would be most beneficial i have tried walking which gets painful for me and bores me to tears i also am not fond of pilates [ Disease ] as you may know the internet poses an obvious barrier when trying to make a blind diagnostic decision without the ability to examine your toe first hand i have removed zillions of toenails in my medical career and yes you can have some areas under the remaining nail turn brownish this is usually older blood that is being reabsorbed by the body if your toe is red hot and tender then these would be a sign of an infection when in doubt it is perfectly fine to contact the medical provider that performed this procedure for post surgical advice