Computer-Assisted Planning and Patient-Specific Instruments for Bone Tumor Resection within the Pelvis: A Series of 11 Patients
Table 1
Patient series, tumor data, histopathological resection results and clinical outcomes.
Patient (gender (M/F), age (years))
Histology1
Enneking zones
Tumor size (mm)
Number of resection planes2
Closest desired safe margins3 (mm)
Histological analysis
Neo and adjuvant treatment
Reconstruction
Complication
Follow-up (months)
Current status4
1 (F, 76)
CHS grade 2
I + II
200
1 (HER)
10
R0
—
Hip transposition
Deep infection
28
DF
2 (M, 54)
CHS grade 2
I + II + III
120
1 (HER)
6
R0
—
Prosthesis
—
19
DF
3 (M, 57)
CHS grade 2
II
140
3
10
R0
—
Prosthesis
—
17
DF
4 (M, 65)
CHS grade 2
II + III
160
2 (HER)
10
R0
—
Prosthesis
Deep infection
16
DF
5 (F, 69)
LMS
I + II
150
2
10
R0*
Chemotherapy
Prosthesis
ST LR***
22
DF
6 (M, 66)
CHS grade 2
II
140
3 (HER)
—
R0
—
Prosthesis
Deep infection
10
DF
7 (M, 60)
CHS grade 2
I + II + III
170
2
5
R0
—
Prosthesis
Deep infection; hip dislocation
12
DF
8 (F, 27)
CHS grade 2
IV
60
4
7
R2**
—
—
Scare desunion
8
DF
9 (M, 46)
CHS grade 2 LR of myxoid
I + II
270
1
3
R0
—
Prosthesis
Deep infection; hip dislocation
7
DF
10 (M, 17)
ES
II + III
100
3
10
R0
Chemotherapy; radiotherapy
Prosthesis
—
4
DF
11 (M, 54)
Bone sarcoma
IV
100
4
5
R0
Chemotherapy
—
—
0
DF
CHS = chondrosarcoma; LMS = leiomyosarcoma; ES = Ewing’s sarcoma; LR = local recurrence.
2HER = hip extra-articular resection.
3See Table 2 for detailed data on bone-cutting accuracy.
4DF = alive disease-free.
*R0 bone resection margin but R1 soft-tissue resection margin.
**R2 bone resection margin because tumor has been morselized for extraction.
***Soft-tissue local recurrence at 18 months; patient was reoperated on; now patient is free of disease.