240 / 245
240
· DOS Abstracts
Alarming Increase in Degenerative Shoulder
Lesions in Denmark in the period 1996 to 2013
Nina Monrad, Ann Ganestam, Thomas Kallemose, Kristoffer W Barfod
Department of Orthopedics, Copenhagen University Hospital Hvidovre
Background:
Degenerative shoulder lesions are common and a challenge to
diagnose. They often result in significant disability for the patient and are an
economic burden to society. From recent studies, an increasing incidence has
been reported.
Purpose / Aim of Study:
The purpose with this study was to investigate and
map the incidence of degenerative shoulder lesions in Denmark from 1996 to
2013 with focus on sex, age and geographical area.
Materials and Methods:
The National Patient Registry was retrospectively
searched to find the number of degenerative shoulder lesions in Denmark dur-
ing the period 1996– 2013. Regional population data were retrieved from the
services of Statistics Denmark. Incidence rates were analyzed using poison re-
gression models, all analysis was done in R 3.2.2, p-values of less than 0.05
were considered statistically significant.
Findings / Results:
During the 18-year period, 244.519 individual contacts
with a DM 75 diagnosis were registered. Male:female ratio was 51:49, median
age was 51. Most frequent were impingement related lesions (DM 75.1-DM
75.5) with a mean incidence rate of 313.3 (CI 241.8-384.8) per 10^6 per-
son years at risk (PYRS). A statistically significant increase in overall incidence
rate from 149.4 per 10^6 PYRS in 1996 to 715.3 per 10^6 PYRS in 2013
was found (p<0.001). Incidence was highest for men aged 51-70 (1085.1 per
10^6 PYRS in 2013). Rural areas had a 1.3 fold higher mean incidence rate than
urban areas. There was no significant difference in incidence between sexes.
Conclusions:
The incidence of degenerative shoulder lesions rapidly increased
mainly due to an increase in the older population +50. There were no significant
differences in incidence between sexes. Rural areas had a 1.3 fold higher inci-
dence rate than urban areas.
No conflicts of interest reported
191.