Evaluation of the Relationship Between the Duration of the Evolution of the Complex Regional Pain Syndrome Type 1 (CRPS 1) and Effectiveness of the Continuous Peripheral Nerve Block (CPNB) Associated With an Intensive Rehabilitation Program

The study evaluates the relationship between the duration of evolution of SDRC1 and the efficacy of continuous peripheral nerve block (c-PNB) associated with an intensive rehabilitation program to improve the therapeutic strategy of SDRC1. The main hypothesis of this study is that if c-PNB is proposed earlier, the recovery, measured with a scale achievement of objectives, will be better.

Inclusion Criteria: * informed consent signed * Diagnosis of CRPS type 1 according to BUDAPEST criteria to the upper or lower limb * Affiliated to a social security scheme (beneficiary or entitled person) * Patients justifying the installation of a Continuous Peripheral Nerve Block (CPNB) including pain rebellious to physical and medicinal treatments, the presence of fixed dystonia, or kinesiphobia or who are no longer progressing in the rehabilitation algorithm and requiring the need for a specialised technical platform. Exclusion Criteria: * CRPS Type 2 * Contra-indication to the analgesics used (bupivacaine, ropivacaine, levobupivacaine) * Severe psychiatric decompensation * Under legal protection measures * Pregnant women