The use of ionising radiation in orthopaedic surgery: principles, regulations and managing risk to surgeons and patients.

The use of ionising radiation for plain film radiography and computerised tomography is fundamental in both diagnostics and treatment for orthopaedics. However, radiation is not without risk as high exposure can increase the risk of cancer. Little time is spent educating doctors about the relative risks of radiation, both to patients and themselves. In addition, there are common misunderstandings about the best ways to mitigate such risk. We aim to provide an overview of the fundamental principles of the use of ionising radiation and its risks within the context of orthopaedic surgery. While providing a narrative review of the current literature, we discuss the basic physics, standards of good practice and relevant UK and European regulations. We discuss the risks to patients and surgeons and suggest ways that these can be mitigated in the operating theatre. A thorough understanding of the risks, and appropriate procedural rules, with respect to the use of ionising radiation is essential for those in orthopaedic practice.

Biomarkers as predictors of inpatient mortality in fractured neck of femur patients.

INTRODUCTION: Hip fractures are common and it is estimated to cost the National Health Service (NHS) around £2 billion/year. The majority of these patients are elderly and they require careful perioperative management as morbidity and mortality are high. This study aims to look at routinely gathered biomarker data and baseline demographics to evaluate if they may be used to predict inpatient mortality. PATIENTS AND METHODS: The study included 2158 patients from a single Centre over a 5-year period. INCLUSION CRITERIA: age>60, confirmed fractured neck of femur on radiological imaging. EXCLUSION CRITERIA: pathological fractures, patients treated non-operatively, missing data. Univariate followed by multivariate analysis was conducted to identify the independent predictors of inpatient mortality. RESULTS: The variables found to be independent predictors of inpatient mortality were: age > 85, sex (male), albumin < 35, lymphocytes < 1, American Society of Anesthesiologist (ASA) grade > 3. For the final derived multivariate logistic regression model, a receiver operator characteristic (ROC) curve was constructed to assess the ability of the included variables to predict inpatient mortality. The area under the curve was 0.794 which together with sensitivity of 63.2% and a specificity of 79.1% at a cut value of 0.1. CONCLUSION: This paper supports research previously conducted in this field, showing the prognostic value of both biomarker (albumin and lymphocytes), and non-biomarker data (ASA grade, age and gender) in predicting mortality in patients who have sustained a hip fracture.

Radiation in orthopaedics (RIO) study: a national survey of UK orthopaedic surgeons.

OBJECTIVES: Orthopaedic surgeons have a responsibility to minimise risks of ionising radiation to patients, themselves and staff. This study aims to establish the understanding of radiation practice, legislation and risk by orthopaedic surgeons. METHODS: A nationwide online survey of UK-based orthopaedic surgeons was conducted. Participants answered 18 multiple-choice questions assessing level of radiation safety training, basic principles/knowledge of ionising radiation, relevant legislation and operating practice. RESULTS: A total of 406 surgeons completed the survey. 92% reported using intraoperative ionising radiation at least once per week. 38% received no formal training on radiation safety. Knowledge of basic principles of radiation and legislation was limited. There was variable knowledge when labelling an image intensifier machine and choosing its safest orientation. Poor uptake of radiation protection equipment was noted. Only 19% agreed they had adequate training in ionising radiation safety and 27% reported receiving adequate training in equipment emitting ionising radiation in the operating theatre. CONCLUSION: Many orthopaedic surgeons in the UK do not believe they are adequately trained in radiation safety. There is a deficiency amongst practicing surgeons in basic knowledge, relevant legislation and practicalities of the use of ionising radiation in the operating room. This could potentially put patients and health-care professionals at additional risk. We recommend that a standardised national training programme on the basic principles and safety of ionising radiation is implemented for all practicing orthopaedic surgeons. ADVANCES IN KNOWLEDGE: This paper is the first UK national survey amongst orthopaedic surgeons and is one of the largest reported internationally.

A unique presentation of a complex haemorrhagic adrenal pseudocyst.

A man aged 33 years presented with a 3-day history of left-sided testicular discomfort. Clinical examination revealed a large left-sided varicocele. He was referred for a testicular ultrasound, which demonstrated a moderate left-sided varicocele and an associated large suprarenal mass. An urgent (CT) scan was arranged which confirmed this, with associated compression of adjacent structures, including the left kidney and left renal vessels. The patient was admitted 1 week following the CT scan with features of sepsis. An inpatient adrenal MRI scan suggested the presence of a large left-sided haemorrhagic adrenal cyst. This was removed surgically through a left subcostal incision. Histology confirmed there was no malignancy. The patient was discharged and a follow-up CT scan at 6 months showed complete resolution of the cyst with no further testicular discomfort. This is the first known case of an adrenal cyst presenting with a varicocele.

Anticoagulation service: improving the referral process.

Oral anticoaguIants are extremely common, and it is estimated that there are between 500,000 and 1 million people prescribed them in the UK.[1] These drugs are the most frequently named medication in fatal errors and litigation claims [2] and they require the implementation of additional safety controls.[3] Warfarin is the most commonly prescribed anticoagulant and it requires regular international normalised ratio (INR) monitoring and dosage adjustment to achieve the desired therapeutic range.[4] Under-anticoagulation can cause thrombosis and over-anticoagulation can lead to haemorrhage, both of which can be fatal.[5] At St. Peter's hospital there is an anticoagulation service providing regular international normalised ratio (INR) monitoring for patients on warfarin. However, the current referral system is paper-based and a baseline audit found that only 66% of patients were successfully referred to the service on discharge from hospital. This identifies a significant patient safety issue which could result in life-threatening consequences. An electronic referral form was developed within a pre-existing computer based ordering system with the aim of improving the referral rate. The electronic referral tool streamlined the referral process, making the form quicker and easier to fill out and removed the need for faxing lengthy paper forms. Key information on the form was made mandatory. After intervention a re-audit revealed that 84% of patients discharged on warfarin were referred to the clinic, which equates to an increase of 18%. The increased referral rate will improve patient safety and prevent unnecessary hospital admissions. There should be continued promotion of the importance of referring patients to the anticoagulation clinic. This can be delivered through inductions, teaching sessions, and re-audits. Future goals include an automated referral system triggered on patient discharge.