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General Orthopaedics

INCOME AND COSTS OF TREATING TIBIAL OSTEOMYELITIS IN THE UK: A COMPARISON OF LIMB SALVAGE VERSUS AMPUTATION

European Bone And Joint Infection Society (EBJIS) 34th Annual Meeting: PART 2



Abstract

To compare the costs of treatment and income received for treating patients with tibial osteomyelitis, comparing limb salvage with amputation.

We derived direct hospital costs of care for ten consecutive patients treated with limb salvage procedures and five consecutive patients who underwent amputation, for tibial osteomyelitis. We recorded all factors which affect the cost of treatment. Financial data from the Patient-Level Information and Costing System (PLICS) allowed calculation of hospital costs and income received from payment under the UK National Tariff. Hospital payment is based on primary diagnosis, operation code, length of stay, patient co-morbidities and supplements for custom implants or external fixators.

Our primary outcome measure was net income/loss for each in-patient episode.

The mean age of patients undergoing limb salvage was 55 years (range 34–83 years) whereas for amputation this was 61 years (range 51–83 years). Both groups were similar in Cierny and Mader Staging, requirement for soft-tissue reconstruction, anaesthetic technique, diagnostics, drug administration and antibiotic therapy.

In the limb salvage group, there were two infected non-unions requiring Ilizarov method and five free flaps. Mean hospital stay was 15 days (10–27). Mean direct cost of care was €16,718 and mean income was €9,105, resulting in an average net loss of €7,613 per patient. Patients undergoing segmental resection with Ilizarov bifocal reconstruction and those with the longest length of stay generated the greatest net loss.

In the amputation group, there were 3 above knee and 2 below knee amputations for failed previous treatment of osteomyelitis or infected non-union. Mean hospital stay was 13 days (8–17). Mean direct cost of care was €18,441 and mean income was €15,707, resulting in an average net loss of €2,734 per patient. Length of stay was directly proportional to net loss.

The UK National Tariff structure does not provide sufficient funding for treatment of osteomyelitis of the tibia by either reconstruction or amputation. Average income for a patient admitted for limb salvage is €6,602 less than that for amputation even though the surgery is frequently more technically demanding (often requiring complex bone reconstruction and free tissue transfer) and the length of hospital stay is longer.

Although both are significantly loss-making, the net loss for limb salvage is more than double that for amputation. This makes treatment of tibial osteomyelitis in the UK National Health Service unsustainable in the long term.


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