Table 1 Demographic and clinical features of studied patient SD Standard deviation, WC With collar, BC Blue collar, CCI Charlson Comorbidity Index

Number of patient

35 (51.5%)

33 (48.5%)

Age (years)

(mean ± SD)

64.4 (± 4.3)

62.8 (± 4.9)

Gender

31 F, 4 M

30 F, 3 M

Occupation

WC

5 (14.3%)

5 (15.2%)

BC

30 (85.7%)

28 (84.8%)

Comorbidity

Smokers

6 (17.1%)

4 (12.1%)

Diabetes

4 (11.4%)

5 (15.2%)

CCI

2.3 (± 1.0)

2.2 (± 0.7)

Eaton and Littler disease stage

Stage III

26 (74.3%)

24 (69.7%)

Stage IV

9 (25.7%)

9 (27.3%)

The average duration of the symptoms (years)

4.8 (± 1.7)

4.3 (± 2.1)

Dominant side involved

7 (33.3%)

6 (30.0%)

Follow-up (years)

(mean ± SD)

2.1 ± 0.5

2.3 ± 0.6