Table 2 Same table as Table 1 with overview of the nine questions that were posed to the audience

Frequency of cartilage surgery per year

None 12.8 %

10 12.8 %

10–50 38.5 %

51–100 25.6 %

>100 10.3 %

Preparation prior to MFX

Never 2.7 %

To calcifying layer 27.0 %

Partially remove calcifying layer 8.1 %

Complete removal of calcifying layer 59.5 %

Into subchondral bone 2.7 %

Preparation prior to ACI

Never 0.0 %

To calcifying layer 23.1 %

Partially remove calcifying layer 5.1 %

Complete removal of calcifying layer 61.5 %

Into subchondral bone 10.3 %

Acceptance of subchondral bleeding prior to MFX

No 5.6 %

Spot bleeding 88.9 %

Spread bleeding 5.6 %

n/a

n/a

Acceptance of subchondral bleeding prior to ACI

No 40.0 %

Spot bleeding 57.5 %

Spread bleeding 2.5 %

n/a

n/a

Management of bleeding prior to ACI

No 30.2 %

Manual compression 20.9

Electrocauthery 7.0 %

Fibrin glue 20.9 %

Adrenalin 20.9 %

Treatment of intralesional osteophytes prior to ACI

Unknown 0.0 %

Ignore 0.0 %

Removal with curette 73.8 %

Removal with burr 23.8 %

Other 2.4 %

How deep to remove intralesional osteophytes

Not 2.0 %

Partially over base of subchondral bone 0.0 %

Complete removal a niveau of subchondral bone 84.3 %

Complete removal under niveau of subchondral bone 13.7 %

n/a

Does defect-associated BME affect cartilage defect treatment

Yes 85.7 %

No 14.3 %

n/a

n/a

n/a