Neck sprains are very common injuries often treated with immobilisatio
n of different duration. The treatment with collars was tested against
physiotherapy in a prospective randomised trial. Endpoints were defin
ed as state of health, pain and costs. Ninety-seven patients with whip
lash injuries were splitted by randomisation into two groups. One grou
p was treated with a certain scheme of physiotherapy. Another group wa
s treated with collar immobilisation for 3 weeks. Concerning symptoms
at the time of admittance, age and sex distribution the groups were co
mparable. Fifty healthy persons with the same age and sex distribution
served as a control group. Regarding to physical state of health and
pain, which were examined by valid questionnaires, significant advanta
ges of physiotherapy after two weeks were found. After 12 weeks the ph
ysical state of health corresponds to that of the control group. No in
fluence on psychical state of health was seen. Physiotherapy for treat
ment of neck sprain is highly recommended. It has clear advantages ove
r the treatment with collars with regard to state of health and pain,
and it seems to be economically favourable.