3D-printed hemipelvic prosthesis combined with a dual mobility bearing in patients with primary malignant neoplasm involving the acetabulum: clinical outcomes and finite element analysis

Table 1 Demographic and clinical characteristics and follow-up results of patients who underwent reconstruction following tumor resection

Case no	Age, year	Sex	Follow-up, months	Diagnosis	Staging^a	Resection type^b	Blood loss, mL	Operation time, hours	Status	Outcome	Pain^c	Function^c	Emotional acceptance^c	Support^c	Walking ability^c	Gait^c	Total score (%)^c
1	34	F	12	Ewing sarcoma	IIB	I + II + III	3500	10	dec	Local recurrence and distant metastasis (lung)	NA	NA	NA	NA	NA	NA	NA
2	54	F	50	Chondrosarcoma	IIB	II	4500	9	ned	Intact reconstruction	5	4	5	3	3	3	23 (76.7)
3	43	M	44	Chondrosarcoma	IIB	II + III	6000	9	ned	Intact reconstruction	4	3	4	3	3	3	20 (66.7)
4	24	M	4	Osteosarcoma	IIB	II + III	3000	6	dec	Complications of chemotherapy	NA	NA	NA	NA	NA	NA	NA
5	56	M	40	Chondrosarcoma	IIB	I + II	3000	8	ned	Intact reconstruction	4	4	5	4	4	4	25 (83.3)
6	27	F	36	Ewing sarcoma	IIB	I + II + III	3500	6.5	ned	Intact reconstruction	3	3	4	3	3	3	19 (63.3)
7	57	M	30	Osteosarcoma	IIB	I + II + III	3000	6	ned	Amputation for local recurrence	NA	NA	NA	NA	NA	NA	NA
8	53	M	24	Fibrosarcoma	IIB	I + II	3000	4.5	ned	Repeated dislocation	3	3	4	3	3	2	18 (60)
9	41	F	22	Giant cell tumor	IIA	II	1500	4.5	ned	Intact reconstruction	4	4	5	4	4	4	25 (83.3)
10	63	M	14	Chondrosarcoma	IIA	II	2000	5.5	ned	Intact reconstruction	4	3	4	3	3	3	20 (66.7)
11	43	F	10	Chondrosarcoma	IIA	II	1500	4	ned	Intact reconstruction	4	3	5	3	3	3	21 (70)

F female, M male, dec deceased, ned no evidence of disease, NA not assessed
^aStaging according to the Enneking system
^bResection type indicates pelvic regions involved
^cThe Musculoskeletal Tumor Society 93 scoring system was used for evaluating postoperative function; each of the six variables was assessed on a 5-point scale, with a maximum total score of 30

ISSN: 1471-2482