Table 1 Patients' characteristics

Sex

13 female, 14 male

5 female, 8 male

Age (years)

34 (range 17–47)

38 (range 25–64)

Height (cm)

175 (range 160–189)

174 (range 164–181)

Weight (kg)

76.85 (range 54–100)

76.25 (range 60–102)

Body mass index

25 (range 19–34)

25 (range 21–31)

Defect size, 1st lesion (cm²)

4.2 (range 2–6)

5 (range 2–15)

Cartilage grade, 1st lesion, Outerbridge

IV (n = 27)

IV (n = 13)

Localization, 1st lesion

Medial femoral condyle (n = 19), lateral femoral condyle (n = 2), patella (n = 4), trochlea (n = 1), tibia (n = 1)

Medial femoral condyle (n = 8), lateral femoral condyle (n = 1), patella (n = 2), trochlea (n = 2)

2nd lesion

n = 6

n = 6

Defect size, 2nd lesion (cm²)

2.5 (range 1–4)

3 (range 2–4)

Cartilage grade, 2nd lesion, Outerbridge

IV (n = 6)

II (n = 1), IV (n = 5)

Localization, 2nd lesion

Patella (n = 4), trochlea (n = 2)

Medial femoral condyle (n = 2), lateral femoral condyle (n = 1), trochlea (n = 3),

Previous surgical procedures

High tibial osteotomy (n = 6), shaving (n = 15), abrasion arthroplasty (n = 4), microfracture/drilling (n = 8), ACI (n = 1), meniscectomy (n = 10), anterior cruciate ligament/collateral ligament reconstruction (n = 7), lateral release (n = 2)

High tibial osteotomy (n = 2), shaving (n = 8), abrasion arthroplasty (n = 4), microfracture/drilling (n = 4), ACI (n = 2), meniscectomy (n = 10), anterior cruciate ligament/collateral ligament reconstruction (n = 6)