Table 5 Patient-reported outcome measures at latest post-operative follow-up, reported in four of the included studies

RCT

 Peres [23]

Lysholm Knee Scoring Scale (LKSS)

Assesses eight clinical domains, producing an overall score between 0 and 100 (< 65 poor, 65–83 fair, 84–94 good, 95–100 excellent) [31]

93.8^¶ ± 2.3 — equates to ‘good’ score

87.2^¶ ± 5.5 — equates to ‘good’ score

Difference non-significant

Cohort study

 Balabaud [24]

Bussiere and Beaufils functional scale (BBFS)

Considers patient-reported pain and ROM and is reported as an ordinal scale (excellent, good, fair, poor) [32]

‘Good’ in 15/21 knees

‘Good’ in 4/19 knees

Difference non-significant

 Sabater-Martos [28]

Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)

Considers pain (0–20), stiffness (0–8) and functional impairment (0–68), with lower scores reflecting superior states [33]

17^¶ ± 15.4—equates to ‘slight difficulties’

16.1^¶ ± 15.9—equates to ‘slight difficulties’

Difference non-significant

 Wirtz [29]

Larson score

Considers seven clinical domains (pain, walking, function, ROM, strength, flexion contracture, laxity), producing a score between 0 and 100 (< 60 poor, 60–69 fair, 70–84 good, 85–100 excellent) [34]

74^¶ ± 17.5—equates to ‘good’ score

61^¶ ± 18.5—equates to ‘fair’ score

Difference only significant if operated on within 5 days of symptom onset (favours AW)