Page 80 - Reconstructive Techniques in Musculoskeletal Tumor Surgery

Chapter 4
Table 1. continued
Variable
Resection type (Enneking classi cation)
Type 2-3
Type 2
Neoadjuvant and adjuvant therapies
Neoadjuvant chemotherapy Adjuvant chemotherapy Neoadjuvant radiotherapy Adjuvant radiotherapy
Surgical details
Extra-articular resections Computer-assisted resections MUTARS attachment tube used
Complications
Dislocations, all reconstructions
Dislocations in primary dual-mobility cups (n = 24) Structural complications
Infection
Local recurrence
Failure
Any reason
Status at nal follow-up
No evidence of disease Alive with disease Dead of disease
Died of other cause
Number Percent
26 55 21 45
17 36 12 26 7 15 10 21
20 43 12 26 16 34
10 21 1 4 3 6 14 30 5 11
8 17
29 62 3 6 9 19 6 13
The LUMiC was designed for periacetabular reconstruction after tumor resection or extensive revision hip arthroplasty. It is a modular device built of a separate stem and cup, which are both equipped with sawteeth at the junction to allow for rotational adjustment of cup position after implantation of the stem ( gure 1). The stem is hexagonally shaped and carries two additional wings to secure rotational stability. Stems are available for uncemented (TiAl6V4, HA- coated) and cemented (CoCrMo) xation in three di erent lengths (65, 75, and 85 mm) and two di erent core diameters (8 and 10 mm, the latter only uncemented). Uncemented xation was preferred in all centers unless bone quality was deemed insu cient or adequate press- t xation could not be obtained. The cups come in three di erent sizes (50, 54, and 60-mm outer diameter), uncoated, HA-coated, or silver-coated (only the 60-mm version). The highly crosslinked polyethylene
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