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General Orthopaedics

THE USE OF NEO-ADJUVANT RADIOTHERAPY IN THE MANAGEMENT OF PERIARTICULAR SOFT TISSUE SARCOMA

British Orthopaedic Trainee Association Annual General Meeting (BOTA)



Abstract

Optimising post-operative joint function is challenging when treating periarticular soft tissue sarcoma (STS). Radiotherapy reduces local recurrence rates but periarticular fibrosis may adversely affect joint function. Neo-adjuvant radiotherapy requires lower doses and smaller treatment volumes and therefore has potential benefits for the management of periarticular STS, but may lead to an increased risk of post-operative wound complications. This study assesses initial outcome and complications after treatment with neo-adjuvant radiotherapy and surgery for patients with periarticular STS.

17 patients treated with neo-adjuvant radiotherapy and surgery were identified. 3D conformal radiotherapy was delivered at a single centre with a dose of 50Gy in 25 fractions over 5 weeks. Patients were assessed weekly for adverse effects. Resection was planned 4–6 weeks after radiotherapy.

Median follow-up was 13 months (range 5–44 months). No patients had significant adverse effects during radiotherapy. One patient had surgery delayed due to local skin reaction. Minor complications in five patients (three superficial infections, one seroma, one neuropraxia). One patient required further surgery due to incomplete margins. TESS scores for upper and lower limb patients were 86.1 and 78.1 respectively. No cases of local recurrence have occurred to date. Two patients have developed distant metastatic disease.

The early results for periarticular STS managed with neo-adjuvant radiotherapy and surgery are excellent. There does not appear to be a significant increase in post-operative complication rates. With neo-adjuvant radiotherapy. Long term follow-up is required to demonstrate final functional outcome and local control rates.