Table 1 Baseline characteristics of the patients

Age (year)

47.5 ± 15.2

Gender

 Male

35

 Female

29

Time from surgery (year)

1.9 ± 1.2

Tumor location

Upper extremity

 Upper arm

12

 Shoulder

5

 Forearm/wrist

4

 Elbow

2

Lower extremity

 Thigh

14

 Lower leg

10

 Pelvis/hip

7

 Knee

6

 Ankle/foot

4

Histological type

Bone

 Osteosarcoma

15

 Chondrosarcoma

13

Soft tissue

 Liposarcoma

11

 Undifferentiated pleomorphic sarcoma

6

 Myxofibrosarcoma

5

 Fibrosarcoma

4

 Leiomyosarcoma

3

 Epithelioid

3

 Others

4

Surgery type

Amputation

11

Limb salvage

53