Table 1 Characteristics of patients (n = 63) suffering knee lesions who were treated with a tissue engineered graft made with autologous chondrocytes grown on a three-dimensional hyaluronic acid-based biomaterial

Age (years)

   ∘ Mean (standard deviation)

39 (11.47)

   ∘ Range (minimum to maximum)

16 to 64

Gender (male/female)

41/22

Biopsies from asymptomatic patients

23 biopsies

Biopsies from asymptomatic patients

47 biopsies

Single lesion

39 patients

Multiple lesions

31 patients

Location of defect

   ∘ Medial or lateral condyle

62 biopsies

   ∘ Tibial plateau

2 biopsies

   ∘ Trochlea

1 biopsy

   ∘ Patella

5 biopsies

Total surface area for all patients (mean (standard deviation))

   ∘ Range in asymptomatic patients (cm²)

5.2 (2.9)

   ∘ Range in symptomatic patients (cm²)

3.4 (2.8)

Outerbridge grade

   ∘ Outerbridge grade IV

57 patients

   ∘ Outerbridge grade III

6 patients