Navigation-assisted pelvic resections and reconstructions for periacetabular chondrosarcomas

Area of Science:

• Orthopedic Surgery
• Surgical Oncology
• Medical Imaging

Background:

• Survival rates for chondrosarcoma patients have stagnated over four decades.
• The prognostic value of navigation-assisted surgery in chondrosarcoma treatment is not well-established.
• Pelvic chondrosarcomas, particularly those involving the peri-acetabulum, present unique surgical challenges.

Purpose of the Study:

• To evaluate the clinical benefits of navigation-assisted surgery for pelvic chondrosarcomas.
• To assess the impact of computer navigation on surgical outcomes and patient survival.
• To determine the prognostic significance of navigation in limb-sparing surgery for periacetabular chondrosarcomas.

Main Methods:

• A retrospective study of 50 patients with periacetabular chondrosarcomas undergoing limb-sparing surgery.
• Comparison between patients treated with navigation (n=13) and without navigation (n=37) between 2000 and 2015.
• Analysis of intralesional resection rates, margin status, local recurrence, functional outcomes, and survival rates.

Main Results:

• Navigation-assisted surgery was associated with lower intralesional resection rates (8% vs. 19%) and clear bone margins.
• The 5-year local recurrence rate was significantly lower in the navigated group (23% vs. 56%, p=0.035).
• Progression-free survival was significantly improved with navigation (62% vs. 28%, p=0.032), with a trend towards better disease-specific survival (76% vs. 53%, p=0.085).

Conclusions:

• Computer navigation significantly improves local control and progression-free survival in limb-salvage surgery for periacetabular chondrosarcomas.
• Navigation-assisted surgery offers a promising approach to enhance surgical precision and outcomes in this patient cohort.
• Further advancements in treatment modalities are necessary to improve overall disease-specific survival for chondrosarcoma patients.