Results of 20 consecutive patients treated with the Repiphysis expandable prosthesis for primary malignant bone

Benevenia, Joseph; Patterson, Francis; Beebe, Kathleen; Tucker, Kimberly; Moore, Jeffrey; Ippolito, Joseph; Rivero, Steven

doi:10.1186/s40064-015-1582-6

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Table 1 Overview of patient characteristics, lengthening, and complications

From: Results of 20 consecutive patients treated with the Repiphysis expandable prosthesis for primary malignant bone

Pt.	Age at Initial surgery (Y + M)	Diagnosis	Stage	Location of lesion	No. of exp	Length gained (cm)	Follow-up (months)	Converted to adult prosthesis?	Type of failure	Onco. status	Complications	MSTS score (%)
1	9 + 8	Osteosarcoma	IIB	R Prox Tibia	2	1.8	144	Yes	II	CDF	Aseptic loosening	93
2	9 + 10	Osteosarcoma	IIB	R Dist Femur	10	10	148	Yes	II, III	NED	Aseptic loosening and tibial fracture	77
3	9 + 11	Osteosarcoma	IIB	R Dist Femur	1	2	22	No		DOD		67
4	8 + 10	Osteosarcoma	IIB	L Prox Humerus	6	5.8	116	Yes		CDF		93
5	11 + 2	Ewing’s Sarcoma	IIB	L Dist Femur	8	7.9	137	Yes	I, IV	CDF	Contracture, infection	97
6	10 + 8	Osteosarcoma	IIB	L Dist Femur	6	7	61	No		CDF		77
7	16	Ewing’s Sarcoma	IIB	L Prox Humerus	6	5.5	75	No	I	CDF	Contracture/dislocation	93
8	7 + 9	Osteosarcoma	IIB	L Dist Femur	0	0	10	No		DOD		70
9 ^A	12 + 1	Osteosarcoma	IIB	L Prox Tibia	5	4.5	64	No	III × 2	DOD	Prosthesis failure, tibial fracture	93
10	10 + 6	Osteosarcoma	III	L Dist Femur	2	2.2	27	No		DOD		80
11	12 + 9	Osteosarcoma	IIB	L Dist Femur	0	0	12	No	V	DOD	Hip disarticulation	80
12	7	Osteosarcoma	IIB	L Prox Humerus	8	6.9	71	Yes	III	CDF		87
13^A	9 + 7	Osteosarcoma	IIB	L Dist Femur	4	4	41	No	IV	DOD	Infection	63
14^A,C	9 + 11	Osteosarcoma	IIB	L Dist Femur	9	6.8	67	Yes	III, IV	CDF	Prosthesis failure, Infection	87
15^A	9 + 4	Osteosarcoma	IIB	L Dist Femur	14	12.9	63	Yes	II	CDF	Aseptic loosening	90
16a^A	9 + 2	Osteosarcoma	IIB	R Dist Femur	1	1	54	No	II	CDF	Aseptic loosening	93
16b	11	Osteosarcoma	IIB	L Dist Femur	1	1	30	No		CDF		83
17^C	12	Osteosarcoma	IIB	L Dist Femur	0	0	6	No		DOD		47
18	6	Osteosarcoma	IIB	R Dist Femur	2	2	30	No		CDF		90
19	7 + 1	Osteosarcoma	IIB	L Prox Tibia	0	0	14	No		CDF		37
20a	6 + 9	Osteosarcoma	IIB	R Dist Femur	3	2.3	37	No		AWD		83
20b^B	7 + 6	Osteosarcoma	III	R Prox Humerus	2	1.7	17	No		AWD		80

Types of failure: soft-tissue (I), aseptic loosening (II), structural failure (III), infection (IV), tumor progression (V)
Patients 1–12 were reported on in previous study
Patients 16 and 20 had diagnosis of Osteosarcoma at two different sites
DOD dead of disease, NED no evidence of disease, AWD alive with disease, CDF continuously disease free
^AIndicates that the patient had second Repiphysis expandable prostheses at same site
^BPatient presented with a second bone lesion without pulmonary metastasis
^CIndicates patients initially treated at an outside institution, and presented to our institution after failed implant

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