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 improvement of the composite score following BNPc combined with intensive rehabilitation.

EVA (Visual Analogue Scale, VAS) for all the patients at each visit This is a measure of pain intensity on a scale of 0 (no pain) to 10 (very severe pain).

We will assess the percentage of pain relief with the EVA scale, before and after the PCNB.

Hospital Anxiety and Depression (HAD) scale for all the patients at each visit There will be 2 scores One to assess anxiety : from 0 to 21 and one to assess depression : from 0 to 21 Higher scores mean a worse outcome.

For an upper limb block :

Passive and active arthrometry (angular measurements for shoulder, elbow and wrist)

For a block of the lower limb :

Passive and active arthrometry (angular measurements for hip, knee and ankle)

For an upper limb block :

Kapandji Index at each visit (between 0 to 10)

For an upper limb block, gripping force will be evaluated with a Jamar and Pinch dynamometer at each visit after BNPc

For an upper limb block, the activity limitation will be evaluated by leroux's scapular index (LSI) with a global score out of 100 at each visit after BNPc

For an upper limb block, the dexterity will be evaluated by a Box and Block Test at each visit after BNPc

DASH scale at each visit

WOMAC score at each visit

TDM6 at each visit (number of metres travelled by the patient during 6 minutes)

Return to work

• Recording of effective doses (continuous and bolus)

• Incident reporting