::This article deals with Selective Dorsal<unk>  (SDR) rather than the<unk>  procedures for pain relief; for those procedures, which have begun to take the name<unk> " in certain instances, see facet<unk>  and similar. A facet<unk>  is just one of many different forms of radiofrequency ablation, and its use of the<unk> " name should not be confused with the SDR procedure. A selective dorsal<unk>  (SDR), also known as a<unk> , dorsal<unk> , or a selective posterior<unk> , is a neurosurgical procedure that selectively destroys problematic nerve roots in the spinal cord. This procedure has been well-established in the literature as a surgical intervention and is used to relieve negative symptoms of neuromuscular conditions such as spastic diplegia and other forms of spastic cerebral palsy. The specific sensory nerves inducing spasticity are identified using electromyographic (EMG) stimulation and graded on a scale of 1 (mild) to 4 (severe spasticity). Abnormal nerve responses (usually graded a 3 or 4) are isolated and cut, thereby reducing symptoms of spasticity. Spasticity is defined as a velocity-dependent increase in muscle tone in response to a stretch. This upper motor neuron condition results from a lack of descending input from the brain that would normally release the inhibitory neurotransmitter gamma amino butyric acid (GABA), which serves to dampen neuronal excitability in the nervous system. Spasticity is thought to be caused by an excessive increase of excitatory signals from sensory nerves without proper inhibition by GABA. Two common conditions associated with this lack of descending input are cerebral palsy and acquired brain injury.
Rhizotomy
Enterotomy
Iron preparation
Intravenous iron infusion
Chelation therapy
Activated charcoal cleanse
Bloodletting
Gastroduodenostomy