Short or Long Antibiotic Regimes in Orthopaedics

2019-01-22 14:36:17 | BioPortfolio


Research question: If adults with bone or joint infection have local antibiotic therapy, can they do without prolonged treatment with antibiotics by mouth (oral) or injection?

Adults with bone or joint infections are usually given long courses of oral antibiotics or into a vein (intravenous) following surgery. It is also safe to give antibiotics directly into the bone or joint at the time of surgery: this is called local antibiotic therapy. We wish to investigate whether using local antibiotic therapy would allow shorter courses of oral or intravenous antibiotics, in order to limit antibiotic resistance, side effects and cost.

This study compares short against long courses of oral or intravenous antibiotics for adults who have been given appropriate local antibiotic therapy to treat bone or joint infection. Patients who can take part will be randomly divided into two groups within 7 days of surgery. One group will stop oral or intravenous antibiotics, while the other group will continue for 4 weeks or more (standard treatment).

Adults with bone and joint infections who have already had surgery and local antibiotic therapy will be invited. Patients will not take part if they need intravenous antibiotics for another reason, or if their infection is caused by bacteria resistant to the antibiotic(s) used in their local antibiotic therapy.

Main measurement: how many patients' infections return within 12 months after surgery. This will be decided by a group of doctors who do not know what treatment the patient received.

Other important measurements: serious adverse events; side-effects; quality of life; cost of treatment.

Patients will be asked questions at their usual clinic visits, and will be given a questionnaire at the start of treatment and 1 year later.


Using antibiotics wisely, only when and where they are really needed, is important to prevent superbugs emerging. At the moment, bone and joint infections are usually treated by a combination of surgery and antibiotics. Traditionally, we have relied on several weeks of antibiotics as tablets or injections (systemic antibiotics), but these can sometimes cause problems.

It is now possible to administer local antibiotics at the time of surgery directly to the site of infection. This allows much higher levels of the antibiotic to be delivered, for days or weeks, following surgery. Therefore, we wish to investigate whether local antibiotics with a shorter course of systemic antibiotics can treat bone and joint infections as effectively as local antibiotics with a prolonged course of systemic antibiotics (usual treatment). If so, we may be able to reduce antibiotic side effects, help to prevent antibiotic resistant bacteria emerging and limit overall treatment costs.

Patients who agree to participate in this study will be allocated at random to two treatment strategies after surgery for bone and joint infection.

One group of patients will be treated with local antibiotics and a long course of systemic antibiotics, which is the usual treatment: this is the 'long group'.

The other group will be treated with local antibiotics and a short course of systemic antibiotics: this is the 'short group' whose treatment differs from the current usual treatment.

Patients will be involved in the study for one year, and infection recurrence will be assessed at the time of routine clinic review up to 12 months after surgery. Whether or not treatment has been successful will be assessed by an independent committee of specialists, who will remain unaware of the patient's allocated treatment strategy.

Study Design




Shorter Systemic Antibiotics, Standard treatment


OxBI Hub, Trust Offices, Level 2, Nuffield Orthopaedic Centre
United Kingdom


Not yet recruiting


Oxford University Hospitals NHS Trust

Results (where available)

View Results


Published on BioPortfolio: 2019-01-22T14:36:17-0500

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