Table 4 MRI use and diagnosis

Q25 Would you solely decide for surgery based on the MRI report in an ambiguous patient history or examination (without seeing the actual images) in cases of …?

Yes

No

Total

 a. Rotator cuff pathology (including calcific tendinitis & biceps pathology)?

7.41%

2

92.59%

25

27

 b. Shoulder instability?

7.41%

2

92.59%

25

27

 c. Frozen shoulder?

7.41%

2

92.59%

25

27

 d. Glenohumeral arthritis?

11.11%

3

88.89%

24

27

 e. ACJ-Pathology?

7.41%

2

92.59%

25

27

Q26—What are your concerns regarding indications/situations of MRI scans (images and reports) and reliability in cases of …? (up to 3 answers per disorder possible)

Done too fast/early

False positivity

Misinterpretation by patient

Not ordered by the specialists

Discrepancy between clinical examination and MRI images & reports

Total

 a. Rotator cuff pathology (including calcific tendinitis & biceps pathology)?

9.68%

6

16.13%

10

30.65%

19

14.52%

9

29.03%

18

62

 b. Shoulder instability?

20.75%

11

5.66%

3

22.64%

12

16.98%

9

33.96%

18

53

 c. Frozen shoulder?

16.67%

9

14.81%

8

22.22%

12

16.67%

9

29.63%

16

54

 d. Glenohumeral arthritis?

9.80%

5

9.80%

5

25.49%

13

29.41%

15

25.49%

13

51

 e. ACJ-Pathology?

14.00%

7

18.00%

9

22.00%

11

18.00%

9

28.00%

14

50

Q27—What is in your opinion the best indication/situation in regards to MRI scans (images and reports) helping with the diagnosis and reliability in orthopaedic shoulder surgery?

Minimum

Maximum

Mean

Std Deviation

Variance

Count

 Rotator cuff pathology?—in Full thickness tears

0

100

67.69

30.42

925.44

26

 Rotator cuff pathology?—in Partial thickness tears

0

100

61.6

32.7

1069.44

25

 Rotator cuff pathology?—in Massive rotator cuff tears

0

100

74.44

25.72

661.73

27

 Rotator cuff pathology?—in Calcified tendinitis

0

80

31.67

25.44

647.22

24

 Rotator cuff pathology?—in SLAP-Lesions

0

100

47.39

32.06

1027.98

23

 Rotator cuff pathology?—in LHB-Tendon tears

0

100

38.64

25.99

675.41

22

 Shoulder instability

0

100

55.22

31.47

990.17 

2  3

 Frozen shoulder

0

50

13.89

13.8

190.43

18

 Glenohumeral arthritis

0

80

23.16

24.07

579.5  

19

ACJ-Pathology

0

50

20.5

18.83

354.75

20

Q28—Have you ever used an MRI scan in order to help convince a patient to postpone patients’ need for surgery in cases of …?

Yes

No

  Total

 a. Rotator cuff pathology (including calcific tendinitis & biceps pathology)?

57.69%

15

42.31%

11

26

 b. Shoulder instability?

26.92%

7

73.08%

19

26

 c. Frozen shoulder?

34.62%

9

65.38 %

17

26

 d. Glenohumeral arthritis?

11.54%

3

88.46%

23

26

 e. ACJ-Pathology?

15.38%

4

84.62%

22

26

Q29—Do you think MRI scans are been over-used in … ?

Yes

No

Total

 a. Rotator cuff pathology (including calcific tendinitis & biceps pathology)?

53.85%

14

46.15%

12

26

 b. Shoulder instability?

73.08%

19

26.92%

7

26

 c. Frozen shoulder?

88.46%

23

11.54%

3

26

 d. Glenohumeral arthritis?

88.46%

23

11.54%

3

26

 e. ACJ-Pathology?

92.31%

24

7.69%

2

26

Q30—How often do you require a radiologist to review the MRI with you before you make a decision on surgery in cases of …?

Minimum

Maximum

Mean

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

0

20

4.62

6.34

40.24

26

 b) Shoulder instability?

0

30

6.92

8.67

75.15

26

 c) Frozen shoulder?

0

10

2.69

4.44

19.67

26

 d) Glenohumeral arthritis?

0

20

3.46

6.17

38.02

26

 e) ACJ-Pathology?

0

20

3.08

6.06

36.69

26

Q31—For all diagnosis, what percentage of cases would you feel comfortable making a decision without any radiologist input (including report) in cases of …?

Minimum

Maximum

Mean

Std Deviation

Variance

Count

 a) Rotator cuff pathology (including calcific tendinitis and biceps pathology)?

0

100

84.62

22.05

486.39

26

 b) Shoulder instability?

0

100

82.31

27.92

779.29

26

 c) Frozen shoulder?

0

100

86.15

24.82

615.98

26

 d) Glenohumeral arthritis?

0

100

91.15

21.54

464.05

26

 e) ACJ-Pathology?

0

100

93.08

21.08

444.38

26