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Orthopaedic Proceedings
Vol. 106-B, Issue SUPP_11 | Pages 15 - 15
4 Jun 2024
Jennison T Naveed U Chadwick C Blundell C
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Introduction

There are nearly 500,000 people with undiagnosed diabetes mellitus in the UK. The incidental finding vascular calcification on plain radiographs in patients with undiagnosed diabetes has the potential to alter patient management in those presenting with pathology. We hypothesised that the presence of vascular calcification on plain radiographs of the foot may predict the diagnosis of diabetes. The primary aim of this case control study was to determine the positive predictive value of vascular calcification to diagnose diabetes. Secondary aims were to determine the odds of having diabetes dependent on other known risk factors for calcification.

Methods

A retrospective case control study of 130 diabetic patients were compared to 130 non-diabetic patients that were matched for age and gender. The presence of vascular calcification in anterior, posterior or plantar vessels, and length of calcification were measured on plain radiographs. McNemar's Chi-squared test and positive predictive values were calculated. Conditional logistic regression models were used to estimate the association between calcification and diabetes.


Orthopaedic Proceedings
Vol. 106-B, Issue SUPP_7 | Pages 10 - 10
8 May 2024
Nanavati N Davies M Blundell C Flowers M Chadwick C Davies H
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Introduction

The current treatment for Freiberg's osteochondrosis centres around either: simple debridement or debridement osteotomy. The main principle of the osteotomy is to rotate normal articular cartilage into the affected area. We recommend the use of CT scanning to delineate the amount of available, unaffected cartilage available to rotate into the affected space.

Methods

We retrospectively reviewed 32 CT scans of new Freiberg's diagnoses in Sheffield over a 10 year period using the PACS system. We identified the sagittal CT slice that displayed the widest portion of proximal articular margin of the proximal phalanx and measured the diseased segment of the corresponding metatarsal head as an arc (in degrees). This arc segment was divided by 360°. This gave a ratio of the affected arc in the sagittal plane.


Orthopaedic Proceedings
Vol. 106-B, Issue SUPP_7 | Pages 20 - 20
8 May 2024
Eyre-Brook A Ring J Gadd R Davies H Chadwick C Davies M Blundell C
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Introduction

Ankle fractures in the elderly are an increasing problem with our aging population. Options for treatment include non-operative and operative with a range of techniques available. Failure of treatment can lead to significant complications, morbidity and poor function. We compared the outcomes of two operative techniques, intramedullary hindfoot nailing (IMN) and fibular-pro-tibia fixation (FPT). This is the largest analysis of these techniques and there are no comparative studies published.

Method

We retrospectively reviewed patients over the age of 60 with ankle fractures who were treated operatively between 2012 and 2017. We identified 1417 cases, including 27 patients treated with IMN and 41 treated with FPT. Age, sex, co-morbidities and injury pattern were collected. Primary outcome was re-operation rate. Secondary outcomes included other complications, length of stay and functional status.


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_9 | Pages 9 - 9
1 May 2018
Hannah A Chowdhury J Chadwick C Bruce A
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Aim

Left sided hip fractures are more common but no obvious cause has been identified. Left handedness has previously been associated with an increased risk of fracture for a number of sites but to the best of our knowledge no association between handedness and hip fracture has previously been reported.

Methods

2 separate 6-month prospective reviews of hip fracture patients aged over 65 years-of-age were conducted at 2 different hospitals. Handedness was dete2rmined at the time of admission. The second review focused on the use of walking aids. Patients with a previous cerebrovascular accident, neurological condition or contralateral hip prosthesis were excluded due to increased balance problems and falls risk.


The Bone & Joint Journal
Vol. 100-B, Issue 2 | Pages 176 - 182
1 Feb 2018
Petrie MJ Blakey CM Chadwick C Davies HG Blundell CM Davies MB

Aims

Fractures of the navicular can occur in isolation but, owing to the intimate anatomical and biomechanical relationships, are often associated with other injuries to the neighbouring bones and joints in the foot. As a result, they can lead to long-term morbidity and poor function. Our aim in this study was to identify patterns of injury in a new classification system of traumatic fractures of the navicular, with consideration being given to the commonly associated injuries to the midfoot.

Patients and Methods

We undertook a retrospective review of 285 consecutive patients presenting over an eight- year period with a fracture of the navicular. Five common patterns of injury were identified and classified according to the radiological features. Type 1 fractures are dorsal avulsion injuries related to the capsule of the talonavicular joint. Type 2 fractures are isolated avulsion injuries to the tuberosity of the navicular. Type 3 fractures are a variant of tarsometatarsal fracture/dislocations creating instability of the medial ray. Type 4 fractures involve the body of the navicular with no associated injury to the lateral column and type 5 fractures occur in conjunction with disruption of the midtarsal joint with crushing of the medial or lateral, or both, columns of the foot.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_21 | Pages 6 - 6
1 Dec 2017
O'Dowd D Brewer P Davies M leese K Chadwick C Howard D Blundell C
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Introduction

Standard teaching of dislocated ankles was always reduce then x-ray. However the 2016 BOAST guidelines stated “Reduction and splinting should be performed urgently for clinically deformed ankles. Radiographs should be obtained before reduction unless this will cause an unacceptable delay”. We aimed to audit our practice against the BOAST guidelines and look at time from attendance to reduction.

Methods

We retrospectively reviewed all case notes of patients admitted via A&E at the Northern General Hospital with a fractured ankle between August 2016 and January 2017. Time of arrival, time to x-ray and time to reduction were recorded in a database for analysis.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_9 | Pages 58 - 58
1 May 2017
Akimau P Dakin W Cawthron K Chadwick C Blundell C Davies M
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Background

Avulsion fractures of the base of the fifth metatarsal are some of the commonest foot injuries. The robust scientific evidence on the optimal non-operative treatment of these fractures is scant. We designed and conducted a prospective randomised non-inferiority controlled trial of symptomatic treatment versus cast immobilisation with the null hypothesis that cast immobilisation gave substantial benefit over the symptomatic treatment in terms of patient reported outcome measures(PROMs). The alternative hypothesis was that symptomatic treatment was not inferior.

Methods

The primary outcome was the validated Visual Analogue Scale Foot and Ankle (VAS FA) score ranging from 0 to 100. The non-inferiority boundary was set at −10 points. Power sizing determined a minimum of 12 patients per group. Anticipating a significant loss to follow up, 60 patients of 16 years of age or older were randomised to receive either below knee walking cast immobilisation (n = 24) or symptomatic double- elasticated bandage (n = 36) for 4 weeks. Secondary outcome measures were EuroQol-5D, and American Orthopaedic Foot and Ankle Society scores. Data was analysed at the baseline, 4 weeks, 3 months and 6 months post injury by a clinician blinded to a treatment arm.


The Bone & Joint Journal
Vol. 98-B, Issue 6 | Pages 806 - 811
1 Jun 2016
Akimau PI Cawthron KL Dakin WM Chadwick C Blundell CM Davies MB

Aims

The purpose of this study was to compare symptomatic treatment of a fracture of the base of the fifth metatarsal with immobilisation in a cast.

Our null hypothesis was that immobilisation gave better patient reported outcome measures (PROMs). The alternative hypothesis was that symptomatic treatment was not inferior.

Patients and Methods

A total of 60 patients were randomised to receive four weeks of treatment, 36 in a double elasticated bandage (symptomatic treatment group) and 24 in a below-knee walking cast (immobilisation group). The primary outcome measure used was the validated Visual Analogue Scale Foot and Ankle (VAS-FA) Score. Data were analysed by a clinician, blinded to the form of treatment, at presentation and at four weeks, three months and six months after injury. Loss to follow-up was 43% at six months. Multiple imputations missing data analysis was performed.


The Bone & Joint Journal
Vol. 97-B, Issue 3 | Pages 346 - 352
1 Mar 2015
Chadwick C Whitehouse SL Saxby TS

Flexor digitorum longus transfer and medial displacement calcaneal osteotomy is a well-recognised form of treatment for stage II posterior tibial tendon dysfunction. Although excellent short- and medium-term results have been reported, the long-term outcome is unknown. We reviewed the clinical outcome of 31 patients with a symptomatic flexible flat-foot deformity who underwent this procedure between 1994 and 1996. There were 21 women and ten men with a mean age of 54.3 years (42 to 70). The mean follow-up was 15.2 years (11.4 to 16.5). All scores improved significantly (p < 0.001). The mean American Orthopedic Foot and Ankle Society (AOFAS) score improved from 48.4 pre-operatively to 90.3 (54 to 100) at the final follow-up. The mean pain component improved from 12.3 to 35.2 (20 to 40). The mean function score improved from 35.2 to 45.6 (30 to 50). The mean visual analogue score for pain improved from 7.3 to 1.3 (0 to 6). The mean Short Form-36 physical component score was 40.6 (sd 8.9), and this showed a significant correlation with the mean AOFAS score (r = 0.68, p = 0.005). A total of 27 patients (87%) were pain free and functioning well at the final follow-up. We believe that flexor digitorum longus transfer and calcaneal osteotomy provides long-term pain relief and satisfactory function in the treatment of stage II posterior tibial tendon dysfunction.

Cite this article: Bone Joint J 2015;97-B:346–52.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_17 | Pages 25 - 25
1 Nov 2014
Kakwani R Haque S Chadwick C Davies M Blundell C
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Introduction:

The surgical treatment of intractable metatarsalgia has been traditionally been an intra-articular Weil's type of metatarsal osteotomy. In such cases, we adopted the option of performing a minimally invasive distal metaphyseal metatarsal ostetomy (DMMO) to decompress the affected ray. The meta-tarsophalangeal joint was not jeopardised. We present our outcomes of Minimally Invasive Surgery for metatarsalgia performed at our teaching hospital.

Material and methods:

This is a multi-surgeon consecutive series of all the thirty patients who underwent DMMO. The sex ratio was M: F- 13:17. Average age of patients was 60 yrs. More than one metatarsal osteotomy was done in all cases. The aim was to try and decompress the affected rays but at the same time, restore the metatarsal parabola.

It was performed under image-intensifier guidance, using burrs inserted via stab incisions. Patients were encouraged to walk on operated foot straight after the operation; the rationale being that the metatarsal length sets automatically upon weight bearing on the foot. Outcome was measured with Manchester-Oxford Foot Questionnaire's (MOXFQ's) and visual analogue pain score (VAS). Minimum follow up was for six months.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XLIII | Pages 17 - 17
1 Sep 2012
Chadwick C Saxby T
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Introduction

Flexor digitorum longus (FDL) transfer and medial displacement calcaneal osteotomy (CO) is a well-recognised surgical treatment for stage II posterior tibial tendon dysfunction (PTTD). Whilst excellent results are quoted for short and medium term follow-up, the long-term outcome of this procedure is unknown.

Materials and Methods

We reviewed the clinical outcome of patients with a symptomatic flexible flatfoot deformity undergoing this procedure at a mean follow up of 15.3 +/−0.7 years (range 14.4–16.5). We identified 48 patients who underwent surgery by the senior author between 1994 and 1996. We were able to contact 30 patients of whom 20 were available for clinical review. 10 patients participated via telephone interview, and also completed postal questionnaires.


Orthopaedic Proceedings
Vol. 90-B, Issue SUPP_II | Pages 297 - 297
1 Jul 2008
Chadwick C Parsons HK Norman P Kerry RM
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Introduction: Deep infection is a devastating complication following hip arthroplasty. In the early 1970’s Staphylococcus Aureus (SA) was believed to be the causative organism in most cases and Coagulase Negative Staphylococccus (CNS) was widely regarded as a contaminant. It subsequently became recognised that the majority of infections are caused by CNS rather than SA, probably due to the use of peri-operative antimicrobial agents and laminar air flow in theatre.

Aims: The aim of this study was to look at the causative organisms in patients with an infected total hip replacement to see if the pattern of infection has changed with time.

Methods: Between February 1999 and November 2004, 95 patients underwent 1st stage revision surgery at the Northern General Hospital for definite infection following total hip replacement. At least 5 tissue samples were taken at the time of surgery prior to antibiotic administration. Infection was confirmed when at least 3 of the samples were positive on microbiological culture. We retrospectively reviewed the records of these patients and identified the causative organisms.

Results: The 95 patients were infected with 130 different organisms. Of these 32% were SA including MRSA (7.2%), 27% CNS, 13.6% Enterococcus, 4.8% pseudomonas and 3.2% Streptococcci. 29% of patients had polymicrobial infection.

Discussion: Data published in the literature as well as historical data from our unit suggest that CNS is by far the most common organism causing prosthetic hip joint infection. Our results however, show a recent decrease in the proportion of CNS and an increase in SA and polymicrobial infection.


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_III | Pages 396 - 396
1 Sep 2005
Chadwick C Betts R Davies M Fernandes J
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Introduction: Planovalgus is a clinical deformity on weightbearing. Extra-articular calcaneal lengthening osteotomy, is a recognised surgical treatment for symptomatic flat feet. The aim of this study was to assess the difference in pedal pressures and radiographic parameters in the assessment of patients undergoing lateral column lengthening for planovalgus deformity.

Methods: Operative records of one surgeon were reviewed over a 5 year period to identify those who had undergone a lateral column lengthening procedure. 10 patients, 14 feet were identified. Patients were recalled for post-operative pedobarography and pre- and post-operative X-rays were identified. Peak plantar pressures were measured at 8 sites and a line plotted to show maximum deviation of pressure progression from the anatomical axis of the foot. 5 angles on X-rays were measured by 2 observers on 2 occasions.

Results: Difference in pressure under the 3rd metatarsal head (p=0.0004), hallux (p=0.02) and medial midfoot (0.001) suggested a highly significant change. Results for the first (p=0.41) and second (p=0.91) metatarsal heads showed no change. The centre of pressure maximum deviation, plotted using a line drawn between the second toe and the rear of the heel was found to be highly significant postoperatively (p=0.00051) indicating that load bearing shifted from medial to lateral. Changes in X-ray angles of the lateral talo-1st metatarsal angle(p=0.006), calcaneal pitch(p=0.002), AP talocalcaneal angle(0.0001) and talonavicular coverage(p=0.003) were all highly significant.

Discussion: Lateral lengthening in adolescent feet changes the pedal pressures in an advantageous way.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_I | Pages 34 - 34
1 Jan 2003
Jellicoe P Williams H Chadwick C
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Total hip arthroplasty surgery may be associated with substantial loss of blood often necessitating blood transfusion.

The risks associated with blood transfusions are widely known. Haemostatic drugs have been tried in the past to try and reduce this, and there has been renewed interest in these recently, in particular Aprotinin (Bayer).

Aprotinin is a serine protease inhibitor, which has been shown to reduce blood loss in cardiac surgery by up to eighty percent.

The aim of our study was to investigate whether or not high dose Aprotinin can reduce blood loss and transfusion rates in patients’ undergoing total hip arthroplasty.

This was a randomised double blind controlled clinical trial, where 50 patients were randomised to receive either Aprotinin (2 x 106 KIU followed by an infusion of 5 x 105 KIU/hr), or an equivalent volume of normal saline.

Blood loss and transfusion rates were measured as well as the incidence of deep vein thrombosis.

There was a significant reduction in total blood loss seen in the Aprotinin group, median 817±350, when compared to the control group, median 1191±386. This translates to a 31% reduction in blood loss.

DVT and transfusion rates were not significantly different between the two groups.

There was no complications or deaths seen in the Aprotinin group.

The use of high dose Aprotinin results in a reduction in blood loss in total hip arthroplasty. It has been proved to reduce blood loss in cardiac surgery, and although papers have shown it can reduce blood loss in orthopaedic surgery, its’ use should not as yet be routine.

Further work is required to investigate the possibility of a future role for Aprotinin in orthopaedic surgery, as well as its’ mode of action. Until then more established methods of blood conservation should be used.


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_II | Pages 195 - 195
1 Jul 2002
Sonanis S Bhasin N Smith B Burbridge J Chadwick C
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The aim of the study was to analyze the results of the Bayley-Walker Fixed Fulcrum Total Shoulder Replacement done at our institution.

We present a retrospective study of 13 Bayley-Walker Total Shoulder Replacement (BWTSR) with a short follow-up of three to 38 months. Indications for the surgery included severe pain, and all the patients had a dysfunctional rotator cuff not considered to be amenable to surgical repair. Five patients had had previous failed rotator cuff repairs. One patient had a shoulder dislocation following a rotator cuff repair. Not all patients had glenohumeral arthritis. Five males and eight females were treated with BWTSR with a mean age of 66.5 years. Eight patients had left sided BWTSR and five patients had right shoulders replaced. A McKenzie approach was most commonly employed. Post-operatively in most cases early assisted active mobilisation was encouraged.

The Oxford shoulder assessment questionnaire was used in the postoperative subjective assessment. Constant functional assessment score improved on average from 24.3 preoperative to 64.5 postoperative. Complications include significant glenoid fracture during surgery in three patients. One patient had significant infection which responded to treatment, the joint survived and the patient has a good result. One patient had dislocation of the UHDPE liner due to faulty technique.

We conclude that BWTSR is a reliable procedure in a painful rotator cuff deficient shoulder. In suitable patients better results can be achieved than with non-constrained prostheses. The worst results of BWTSR are comparable to the poor results of unconstrained replacement.


The Journal of Bone & Joint Surgery British Volume
Vol. 83-B, Issue 8 | Pages 1096 - 1097
1 Nov 2001
Wright JED Brown RR Chadwick C Karadaglis D


The Journal of Bone & Joint Surgery British Volume
Vol. 71-B, Issue 5 | Pages 816 - 818
1 Nov 1989
Chadwick C

Two patients presented with pain in the arm and a radiographic lesion of the upper humerus which warranted surgical exploration and excision biopsy. In both cases the pathology was inflammatory and involved the insertion of pectoralis major. Tendinitis of the pectoralis major with an associated lesion of the humerus has not previously been described.