Grade of retraction and tendon thickness correlates with MR-spectroscopically measured amount of fatty degeneration in full thickness supraspinatus tears

Table 1 Amount of fat fraction in the supraspinatus muscle belly in the different subgroups

Tendon Retraction [mm]	n	Fat fraction [%]	SD [%]
0–10	15×	3.7	4.2
11–20	13×	16.7	8.2
20	14×	37.5	19.7
Tendon Thickness [mm]
Larger than 4	24×	9.6	12
Thinner than 4	18×	31.5	19.3
Duration [months]
1–12	20×	8.9	8.7
> 12	22×	32.5	21.3
Age [years]
43–55	11×	12.9	15.9
56–65	17×	22.1	20.3
> 65	14×	20	18.4
BMI
< 25	16×	15.9	19.6
> 25	26×	17.8	18.3
Sex
Male	11×	16.2	18.2
Female	31×	25.1	19.24
Smoker Status
Smoker	7×	25,50	18,2
Non-smoker	35×	17,50	18,85

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