Loco-regional anaesthesia has been revived in recent years, particularly with the advent of ultrasound guidance. We conducted a prospective study over a period of one year on the activity of peripheral loco-regional anaesthesia; 25 patients operated on the thoracic limb who had benefited from peripheral loco-regional anaesthesia were collated. Echo-guidance predominated in 76% of cases, axillary block predominated in our study, i.e. 72% of cases; 48% of our patients had had prior premedication with the combination of hypnovel and low dose fentanyl, which made the nerve block to be carried out more comfortably. The most used products were the combination of Bupivacaine 0.5% and Lidocaine 2% in 88%; the average volume injected per plexus block was 21.38 ml with a standard deviation of 6.1 ml. The postoperative analgesia was satisfactory with 28% of the patients having no pain, 64% having only moderate pain and only 4% having pain judged to be intense, i.e. 1 patient; the average duration of this postoperative analgesia was 252 minutes, going up to 420 minutes and it is in the same range as that found in the literature, which is 172.8 min on average, going up to 546.4 min for certain authors. No side effects or complications were observed in our series. In conclusion, we have noted the advantage of the practice of peripheral loco-regional anaesthesia for both the patient and the hospital; this should encourage practitioners to standardise it.