Table 1 Number of reported event terms per event group and specification according to treatment options with the related number of references

1- Implant events

Migration (subsidence, tilt, shift)

2

2

8

8

Radiolucency around the implant / implant loosening

7

3

18

3

Breakage

17

4

1

2

Disassembly

1

–

–

–

Malpositioning

7

7

10

1

Screw or bolt back-out / loosening

16

10

–

2

Hardware local irritation

2

–

–

–

Other specific terms

2

1

2

1

2- Osteochondral events

Bone formation / resorption

2

2

19

2

Arthritis

8

3

3

2

Fracture around the implant

5

7

25

–

Screw / bolt perforation / cutout

46

18

2

4

Tuberosity migration / resorption

8

5

29

3

Osteonecrosis

20

13

3

8

Delayed / nonunion / malunion

27

18

27

11

Malreduction / loss of reduction / fracture displacement

65

23

14

17

3- Shoulder instability

General terms

1

1

4

–

Subluxation

–

–

1

–

Dislocation

2

2

7

1

4- Shoulder pain (idiopathic)

General terms

5

3

3

1

5- Peripheral neurological events

General terms

3

2

5

–

Sensory and/or motor disturbance: cervical or brachial plexus

2

1

4

1

Sensory and/or motor disturbance: branch neuropathy

27

7

15

13

Autonomic disturbance: CRPS

2

3

6

1

6- Vascular events

Hematoma which requires evacuation by needle or surgery

2

1

4

1

Superficial and deep thrombosis at the involved extremity

1

1

2

2

Other specific terms

4

–

4

2

7- Infections

Not specified

3

2

3

2

SSI: superficial

7

3

4

1

SSI: deep

6

2

3

5

Late hematogenous infections

–

–

1

–

8- Superficial soft tissue events

Early events

5

1

1

–

Late events: hypertrophic scar and keloid

2

1

–

2

9- Deep soft tissue events

Affecting the subacromial / subcoracoidal space

17

5

4

2

Affecting the biceps

3

2

1

1

Affecting the capsule (shoulder stiffness, metallosis)

8

5

4

4

Affecting the rotator cuff

9

19

15

1

Affecting the deltoid

1

–

2

–

Other terms

–

–

2

–