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Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_5 | Pages 137 - 137
1 Mar 2017
Schaller G Waters T Davies N Whittingham-Jones P
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Introduction

Trabecular titanium implants are 3D printed with a high-friction ingrowth surface that is continuous with the rest of the acetabular shell. The ability to “face-change” following optimum seating of the component allows unprecedented levels of versatility in acetabular orientation. Bolt-on augments enable rapid trialling and definitive insertion of a monobloc construct. The use of these implants has rapidly increased in the National Joint Registry over the last three years with little published outcome data. We present one of the largest studies using this material.

Objectives

This study assesses the early stability, ingrowth and clinical outcome of revision acetabular reconstruction with trabecular titanium.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 24 - 24
1 Jan 2016
St Mart J Whittingham-Jones P Davies N Waters T
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Introduction

Bone loss in the distal femur and proximal tibia is frequently encountered with both complex primary and revision knee replacement surgery. Metaphyseal sleeves provide a good option for enhanced fixation in managing such defects on both the tibia and femur. We present our results in 48 patients (50 knees) with a minimum 12 month follow up (range 12 to 45).

Methods

48 patients (50 knees) who had revision knee arthroplasty for either septic or aseptic loosening. All were graded Type II or III using the Anderson Orthopaedic Research Institute (AORI) grading system of both femoral and tibial defects. A large portion of aseptic loosening revisions were for extreme osteolysis of a bicondylar knee prosthesis.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_9 | Pages 6 - 6
1 Aug 2015
Lee A Doherty N Dodds R Davies N
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The study was to ascertain if parents/carers could be effective screeners in the detection of infant hip dysplasia.

Infants have been screened for developmental hip dysplasia (DDH) since the late 1960's. The recognition of the importance for early identification of the condition has been well documented. However, the changes to the national screening programme in 2008 have reduced the surveillance of DDH following the removal of the 8 month infant hip check, leaving only the 6–8 week hip check as standard.

A self-check guide for DDH has been developed to enlist parents as screeners for the condition. The guide highlights common signs used to alert to the possibility of hip dysplasia or dislocation. The guide was disseminated by the Royal Berkshire Hospital NHS Trust between 2008 – 2013 within West Berkshire through the maternity services and Health Centres. The guide provided parents with information on classic signs associated with DDH which they were asked to check for.

Of those infants referred to our specialist clinic as a result of parental screening, 73% were “abnormal” of these 33% went on to treatment with splintage. The mean age of these infants was 5.36 months. 20% of positive findings were in infants aged 7 month or over at the time seen. None went on to open surgery. These patients represented between 5 and 10% of our overall group of DDH positive patients. If left undiagnosed, they may have gone on to late presentation of hip dislocation requiring surgery as a child or undiagnosed acetabular dysplasia and possible surgical treatment in relatively early adult life.

Therefore we concluded that given the right guidance parents/carers would be ideal screeners to assist in detecting possible later presenting DDH in their baby.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_11 | Pages 5 - 5
1 Feb 2013
Ferguson J Williamson D Davies N Dodds R Spoors L Willett K Theologis T
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Aim

Paediatric fractures are common but those occurring in non-ambulant children are associated with higher rates of Non Accidental Injury (NAI). There is little published on the mechanisms of injury associated with accidental fracture in young children. This study explores the aetiology of long bone fractures in non-ambulant children.

Methods

This retrospective multicentre study looked at children aged ≤18 months presenting to three hospitals over 3 years (2009 to 2011). Information was gathered on age, gender, fracture type, injury mechanism, final diagnosis, treatment and details of screening for NAI.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_1 | Pages 209 - 209
1 Jan 2013
Buddhdev P Mckenzie J Borgese A Davies N Waters T
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Introduction

Enhanced recovery programmes (ERP) have recently been adopted in the UK, enabling patients to recover quickly and return home sooner. Choice of anaesthetic is an important factor effecting post-operative outcome; studies show regional anaesthesia is more cost-effective, decreasing the incidence of venous thromboembolic events and reducing intra-operative blood loss, the need for transfusion and the length of hospital stay.

Objectives

The objective of this study was to compare the short-term outcome of patients enrolled in our ERP who underwent either general or spinal +/− epidural anaesthesia.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_1 | Pages 166 - 166
1 Jan 2013
Buddhdev P Basu D Davies N Waters T
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Introduction

Rivaroxiban is a direct inhibitor of factor Xa, a licensed oral thromboprophylactic agent that is increasingly being adopted for lower limb arthroplasty. Rivaroxiban has been NICE-approved for use in primary hip and knee arthroplasty following the RECORD 4 trials; proving it more effective in preventing venous thrombo-embolic (VTE) events compared to enoxaparin. Enhanced Recovery Programmes (ERP) are designed to enable patients to recover quickly and return home safely within a few days.

Methods

We prospectively studied 1223 patients (age- and sex-matched) who underwent lower-limb arthroplasty enrolled in our ERP between March 2010 and December 2011; 454 patients (Group 1) received enoxaparin, 769 patients (Group 2) received rivaroxiban. Patients wore thrombo-embolic stockings for six weeks post surgery. Patients were monitored for thrombo-embolic events and wound-related complications for 42 days post-operatively.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XL | Pages 24 - 24
1 Sep 2012
Buddhdev P Tudor F Davies N Waters T
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Introduction

Obesity is a direct contributor to degenerative joint disease, and as the prevalence of obesity increases globally it is likely that more overweight patients will present for hip replacement surgery. There are reports that overweight patients in the UK's National Health Service, typically with a Body Mass Index (BMI) over 30 (BMI 30–39 obese, BMI≥40 morbidly obese), are being denied operations on the premise that they are at risk of significant complications. Enhanced Recovery Programmes (ERP) are designed to enable patients to recover quickly and return home safely within a few days. The aim of this study was to compare the outcome of hip replacements in obese and non-obese patients enrolled in our ERP.

Methods

We prospectively studied 350 patients who underwent primary and revision total hip replacements and were treated through our ERP form March 2010 to January 2011. The mean age was 68 (range 23–92 years). 130 patients (37%) were considered obese with a BMI of >30. 11 patients (3%) were considered morbidly obese with a BMI >40. They were age & sex-matched with the non-obese patients. Outcomes measured included: Length of stay, wound complications (including surgical site infections), deep vein thrombosis and blood transfusion requirements. Data was collected to 42 days following discharge.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXIV | Pages 31 - 31
1 Jul 2012
Buddhdev P Davies N Waters T
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The need for hip and knee replacement surgery is increasing. Enhanced recovery programmes, where patients mobilise quickly and safely after surgery, have been adopted now in many hospitals. There are anecdotal reports of Primary Care Trusts raising thresholds for referral for surgery based on patients' Body Mass Index (BMI).

The aim of this study was to evaluate the early outcome of hip and knee arthroplasty in obese patients (BMI>30) enrolled in the enhanced recovery programme.

Between March 2010 and January 2011, 672 patients were enrolled in our enhanced recovery programme. 316 patients (47%) were classified as obese (BMI>30, range 30-39). There was no significant difference in the length of stay: 4.58 days in the obese patients and 4.44 days in the non-obese. There was also no difference in the rates of superficial infections or oozy wounds. Knee replacements was performed more commonly than hip replacements in the obese group

There was no significant difference in the early outcome of hip and knee replacement surgery in patients with a higher Body Mass Index when undergoing lower limb arthroplasty through the enhanced recovery programme. These patients should continue to be offered surgery when clinically indicated.


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_III | Pages 433 - 433
1 Oct 2006
Gwilym S Davies N Howard PJ Willett K
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Introduction: Previous reports have highlighted the impact of emergent crazes such as in-line skating and micro-scooters, with attention being drawn to potential accident prevention and emergent injury patterns.

A modern craze is the Harry Potter series of books. UK sales of the latest book, The Half-Blood Prince, are estimated to reach 4 million. Given the lack of horizontal velocity, height, wheels or sharp edges we were interested to investigate the impact the books had on children’s traumatic injuries.

Methods & Materials: A retrospective review was undertaken of Children aged 7 to 15 attending the Emergency Department of our Level 1 trauma unit over the summer months of a 3 year period.

The launch dates of the most recent two books (Order of the Phoenix and The Half-Blood prince) were identified and the admissions for these weekends were compared to surrounding summer weekends and those dates in previous years.

Data were obtained from MetOffice (www.metoffice.gov.uk) to establish weather conditions recorded for each of the identified weekends. This would enable us to adjust for this as a confounding variable if necessary.

Results: The mean attendance for children aged 7 to 15 years for this period was 65.1 (median 66, standard deviation 13.289, standard error 2.771). For the two intervention weekends the attendance rate was 36 and 37. This represents a significant decrease in emergency department attendances on those weekends (p < 0.05).

MetOffice data suggested no confounding effect of weather.

Discussion & Conclusion: Harry Potter books appear to protect children from traumatic injuries. The Royal Society for the Prevention of Accidents (rospa.org.uk) is dedicated to the identification and prevention of high risk childhood activities and produce guidelines on keeping children safe. To date no research has addressed the option of ‘distraction therapy’ to prevent injuries.


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_III | Pages 240 - 241
1 Sep 2005
Amin A Bernard J Gow F Davies N Tucker S
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Study Design: A retrospective case-note study.

Objective: To evaluate causes of delayed admission for patients with spinal injuries.

Subjects: 432 patients admitted between March 1998 and March 2003.

Outcome Measures: Patients were analysed with respect to Injury Severity Score (ISS); date of injury, referral and admission independently and length of hospitalisation. The delays between injury and referral (> 3 days) and between referral and admission (> 7days) were correlated to the length of hospitalisation.

Results: There were 322 males (average age, 38.6 years) and 110 females (average age, 41.8 years), with 108 complete injuries, 115 incomplete and 209 intact. The average time between injury and referral was 5.5 days (range 0–94), and between referral and admission was 10.7 days (range 0–130). 161 patients (37%) experienced a delay between injury and referral, of whom 59 (37%) were subsequently also delayed to admission. The principal reason for delay was the treatment of concurrent injuries. Even patients with complete injuries (15/43) experienced delayed referral. 112 patients (26%) experienced a delay between referral and admission. Principal reasons included the provision of beds and stabilisation of concurrent injuries. We found the delay between referral and admission (p< 0.001), the ISS (p< 0.001) and increasing neurological severity of injury (p< 0.001) to be highly significant factors predisposing to longer hospitalisation.

Conclusions: Delayed admission for patients with spinal injuries is common. Provision of beds being the most common preventable reason for delay following referral. Early liason with a designated spinal injuries unit, especially for patients with cord injury remains vitally important.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 174 - 174
1 Feb 2003
Davies N Stalley P
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We have used extracorporeal irradiation as part of the treatment of primary bone tumours since 1996. It is a technique that preserves bone stock, with no allograft cost, is tailor made for the individual and can protect the epiphyseal plates in the immature skeleton.

All cases are biopsied, staged and if appropriate undergo pre-operative chemotherapy. The resected specimen is wrapped in sterile drapes, sealed and then irradiated in either the linear accelerator or a blood product irradiator. The mid-plane dose delivered to the specimens was 50 Gy. The specimen is then reimplanted using varied methods. Post-operative chemotherapy is given if indicated, and the patients have 6 weeks of antibiotics. Regular review is undertaken in the outpatients. We individually reviewed all the patients, examined them and scored their functional results according to the Mankin and Enneking Systems. The pelvic/proximal femur patients also had a Harris Hip Score recorded.

There were 31 cases all over 6 months from surgery with an average follow up of 24 months. Mean age at diagnosis was 24.9 years (range 3 to 66), in 15 males and 16 females. Pathology included 10 osteosarcomas, 13 Ewing’s and 8 chondrosarcomas. Affected bones were 4 proximal humeri, 14 hemipelvises, 12 femurs and 1 tibia. Reconstruction varied from autograft alone, to autograft with a prosthesis, intramedullary nail or blade plate. 10 patients had supplementary vascularized fibula grafts and 2 pedicle flaps. There have been 4 deaths of disease, 2 alive with disease and 25 currently disease free. The Enneking scores averaged 70%, the Harris Hip Scores averaged 74 in the pelvic reconstructions and 92 in the proximal femurs.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 173 - 173
1 Feb 2003
Davies N Murphy P Stalley P
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Chordoma is low grade, locally aggressive and mainly in the sacrococcygeal region. Treatment is a combination of surgery and radiotherapy. We reviewed, to determine our outcome and functional deficits, the cases treated over 15 years by the senior author.

Out of 26 chordoma’s referred 14 were in the sacrococcygeal region. We reviewed them retrospectively looking at presentation, diagnosis, surgical approach, neurological result, complications and survival.

The mean age was 55 years (range 26–80 years), 9 males and 5 females. 13 were primary and 1 was recurrent. Patients reported 18 months of symptoms prior to diagnosis. The tumour sites were S1-5, S2-2, S3-2, S4-3, S5-1 and coccyx −1. Surgery was performed via an anterior/posterior-combined approach in 10, a posterior approach in 2, anterior in 1 and posterior/perineal combined in 1. Complete excision was possible in 11 cases. Surgical resection with radiotherapy was used for inadequate surgical margins, in 3 cases. Neurologically we found that we needed an intact unilateral S3 nerve root for continence in our series. All patients had minor wound complications, 2 wounds required further surgical intervention, and there were 2 cardiac arrhythmias, 1 pulmonary embolus. There were 5 recurrences, 3 were local and 2 metastatic. The survival data for 5 and 7 years is 88% and 71% respectively. Our disease free survival at 5 and 7-years was 44% and 57% respectively.

We achieved an excellent 5 and 7-year survival in our series. The results following complete excision were best, but those treated with adjuvant radiotherapy also responded well. We saw that a solitary S3 nerve root is needed for continence. Treating by a combined anterior/ posterior approach suggests improved survival.