At about 5pm a 25-year-old welder named Eriksson arrives at the surgical outpatient clinic at Maria Hospital because he dislocated his left thumb when he fell off his bicycle. He is examined in treatment room 1 by the doctor on duty,
Dr. Olof Bertil Arnell, who is assisted by Börje Adolf Holmgren, a medical student, and Margit Folin, a student nurse, who receives the order to draw up 5 cc of 1% ethocaine solution in a syringe, which she gives to Dr. Arnell who then injects the solution. The patient does not react strangely in any way. After the thumb is reduced into the correct position, X-rayed and bandaged, Eriksson is allowed to leave the hospital.