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Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_17 | Pages 51 - 51
24 Nov 2023
Frank F Hotchen A Ravn C Pullinger V Eley K Stubbs D Ferguson J McNally M
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Aim

This study assessed quality of life (QoL) in patients having external fixation for treatment of osteomyelitis and fracture-related infection (OM/FRI).

Method

Patients who had surgery for OM/FRI and who completed the EuroQoL EQ-5D-5L or EQ-5D- 3L questionnaires, were identified between 2010 and 2020. Patients were followed-up for 2 years after surgery. QoL was compared between patients who had either an Ilizarov frame or a monolateral external fixator with those who did not receive external fixation.


Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_17 | Pages 39 - 39
24 Nov 2023
Down B Tsang SJ Hotchen A Ferguson J Stubbs D Loizou C McNally M Ramsden A Kendal A
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Aim

Calcaneal osteomyelitis remains a difficult condition to treat with high rates of recurrence and below knee amputation; particularly in cases of severe soft tissue destruction. This study assesses the outcomes of combined ortho-plastics treatment of complex calcaneal osteomyelitis.

Method

A retrospective review was performed of all patients who underwent combined single stage ortho-plastics treatment of calcaneal osteomyelitis (2008- 2022). Primary outcome measures were osteomyelitis recurrence and BKA. Secondary outcome measures included flap failure, operative time, complications, length of stay.


Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_17 | Pages 56 - 56
24 Nov 2023
Hotchen A Dudareva M Frank F Sukpanichy S Corrigan R Ferguson J Stubbs D McNally M
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Aim

To investigate the impact of waiting for surgical treatment for bone and joint infection (BJI) on patient self-reported quality of life (QoL).

Method

Patients presenting to clinic between January 2019 and February 2020 completed the EuroQol EQ-5D-5L questionnaire. Patients were divided into three groups: surgery performed; on the waiting list for surgery; or decision for non-operative management. All patients were followed-up for 2 years. The EQ-index score was calculated and change from presentation to 1-year and 2-year follow-up was compared across the 3 groups. Mortality at final follow-up was measured in all groups.


Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_17 | Pages 17 - 17
24 Nov 2023
Frank F Pomeroy E Hotchen A Stubbs D Ferguson J McNally M
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Aim

Pin site infection (PSI) is a common complication of external fixators. PSI usually presents as a superficial infection which is treated conservatively. This study investigated those rare cases of PSI requiring surgery due to persistent osteomyelitis (OM), after pin removal.

Method

In this retrospective cohort study we identified patients who required surgery for an OM after PSI (Checketts-Otterburn Classification Grade 6) between 2011 and 2021. We investigated patient demographics, aetiology of the OM, pathogen and histology, treatment strategies and complications. Infection was confirmed using the 2018 FRI Consensus Definition. Successful outcome was defined as an infection-free interval of at least 24 months following surgery, which was defined as minimum follow-up.


Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_17 | Pages 50 - 50
24 Nov 2023
Hotchen A Tsang SJ Dudareva M Sukpanichy S Corrigan R Ferguson J Stubbs D McNally M
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Aim

Patient quality of life (QoL) in untreated bone infection was compared to other chronic conditions and stratified by disease severity.

Method

Patients referred for treatment of osteomyelitis (including fracture related infection) were identified prospectively between 2019 and 2023. Patients with confirmed infection completed the EuroQol EQ-5D-5L questionnaire. Clinicians blinded to EQ-index score, grouped patients according to JS-BACH Classification into ‘Uncomplicated’, ‘Complex’ or ‘Limited treatment options’. A systematic review of the literature was performed of other conditions that have been stratified using EQ-index score.


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_10 | Pages 86 - 86
1 Oct 2022
McNally M Ferguson J Scarborough M Ramsden A Stubbs D Atkins B
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Aim

Excision of chronic osteomyelitis (cOM) creates a dead space which must be managed to avoid early recurrence of infection. Systemic antimicrobials cannot penetrate this space in high concentration so local therapy has become an attractive adjunct to surgery. This study presents the mid- long-term results of local therapy with gentamicin in a bioabsorbable ceramic carrier.

Method

A prospective series of 100 patients with Cierny & Mader Types III and IV cOM, affecting 105 bones, were treated with a single stage procedure, including debridement, deep tissue sampling, local and systemic antimicrobials, stabilization and immediate skin closure. cOM was confirmed with strict diagnostic criteria. Patients were followed up for a mean of 6.05 years (range 4.2–8.4 years).


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_14 | Pages 65 - 65
1 Dec 2019
Ferguson J McNally M Stubbs D
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Aims

Infective complications following implant related orthopaedic surgery or fracture related infection are associated with high costs and increased length of stay (LOS). However, the economic burden of disease before, during and after definitive osteomyelitis surgery is not well quantified. The Hospital Episode Statistics (HES) database captures all admissions, outpatient appointments and emergency department attendances at NHS hospitals in England. We identified all patients with a diagnostic code of osteomyelitis and quantified the tariff costs associated with the surgical treatment of osteomyelitis. We also collected all recorded healthcare events related to osteomyelitis for two years preceding the initial osteomyelitis treatment procedure, as well as for two years after the procedure. We compared average osteomyelitis treatment costs in England against a dedicated specialist multidisciplinary bone infection centre.

Methods

We interrogated the HES database for all patients given a diagnostic code of osteomyelitis (M86) between April 2013 and January 2017. We excluded all cases with a diagnosis of osteomyelitis and an index procedure of an amputation for diabetes or arterial disease. Of the remaining 104,622 patients there were 24,408 cases who had their index procedure for osteomyelitis in this time period. Of these we compared a subset of 575 cases treated in a specialist bone infection centre.


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_17 | Pages 22 - 22
1 Dec 2018
Mifsud M Ferguson J Dudareva M Sigmund I Stubbs D Ramsden A McNally M
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Aim

Simultaneous use of Ilizarov techniques with transfer of free muscle flaps is not current standard practice. This may be due to concerns about duration of surgery, clearance of infection, potential flap failure or coordination of surgical teams. We investigated this combined technique in a consecutive series of complex tibial infections.

Method

A single centre, consecutive series of 45 patients (mean age 48 years; range 19–85) were treated with a single stage operation to apply an Ilizarov frame for bone reconstruction and a free muscle flap for soft-tissue cover.

All patients had a segmental bone defect in the tibia, after excision of infected bone and soft-tissue defects which could not be closed directly or with local flaps. We recorded comorbidities, Cierny-Mader and Weber-Cech classification, the Ilizarov method used, flap type, follow-up duration, time to union and complications.


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_17 | Pages 46 - 46
1 Dec 2018
Ferguson J Mifsud M Stubbs D McNally M
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Aims

Dead space management is an important element in the surgical management of chronic osteomyelitis and can be addressed with the use of a biodegradable local antibiotic carrier. We present the clinical and radiographic outcomes in two different biodegradable antibiotic carriers used in the management of chronic osteomyelitis.

Method

A single centre series reviewed between 2006–2017. The initial cohort (2006–2010) of 180 cases (Group A) had a calcium sulphate carrier containing tobramycin (Osteoset® T, Wright Medical). The second cohort (2013–1017) of 162 cases (Group B) had a biphasic calcium sulphate, nano-crystalline hydroxyapatite carrier containing gentamicin (CeramentTM G, Bonesupport AB).

All cases were Cierny-Mader Grade III and IV and had a minimum of one-year clinical follow-up.

Clinical outcomes reviewed included infection recurrence rate, wound leak, and subsequent fracture involving the treated segment. All cases with a minimum one-year radiographic follow-up were reviewed and bone void filling was assessed as percentage filling on the final follow-up radiograph to the nearest five percent increment.


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_17 | Pages 26 - 26
1 Dec 2018
Sigmund IK Ferguson J Govaert G Stubbs D McNally M
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Aim

Infected segmental defects are one of the most feared complications of open tibial fractures. This may be due to prolonged treatment time, permanent functional deficits and high reinfection and non-union rates. Distraction osteogenesis techniques such as Ilizarov acute shortening with bifocal relengthening (ASR) and bone transport (BT) are effective surgical treatment options in the tibia. The aim of this study was to compare ASL with bone transport in a consecutive series of complex tibial infected non-unions and osteomyelitis, for the reconstruction of segmental defects created at surgical resection of the infection.

Method

In this single centre series, all patients with a segmental defect (>2cm) of the tibia after excision of infected non-union or osteomyelitis were eligible for inclusion. Based on clinical features, bone reconstruction was achieved with either ASR or BT using an Ilizarov fixator. We recorded the external fixation time (months), the external fixation index (EFI), comorbidities, Cierny-Mader or Weber-Cech classification, follow-up duration, time to union, number of operations and complications.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_22 | Pages 22 - 22
1 Dec 2017
McNally M Ferguson J Dudareva M Palmer A Bose D Stubbs D
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Aim

Bone infection can recur months or years after initially successful treatment. It is difficult to review patients for many years to determine the true incidence of recurrence. This study determined the minimum follow-up period which gives a good indication of the recurrence rate after surgery for chronic osteomyelitis and infected non-union.

Method

We studied five cohorts of patients who had surgery for long bone infection, over a 10 year period. We investigated the efficacy of various antibiotic carriers (PMMA and Collagen; n=185, Calcium Sulphate; n=195, Calcium Sulphate/Hydroxyapatite; n=233) and management of infected non-unions (n=146). Patients were reviewed and Kaplan-Meier Survivorship curves were constructed to show the incidence and timing of recurrence. The microbiology of the initial infection and the recurrent culture was also compared.


Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_22 | Pages 4 - 4
1 Dec 2017
Ferguson J McNally M Kugan R Stubbs D
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Aims

Ilizarov described four methods of treating non-unions but gave little information on the specific indications for each technique. He claimed, ‘infection burns in the fire of regeneration’ and suggested distraction osteogenesis could effectively treat infected non-unions.

This study investigated a treatment algorithm for described Ilizarov methods in managing infected tibial non-union, using non-union mobility and segmental defect size to govern treatment choice. Primary outcome measures were infection eradication, bone union and ASAMI bone and function scores.

Patients and Methods

A consecutive series of 79 patients with confirmed, infected tibial non-union, were treated with one of four Ilizarov protocols, consisting of; monofocal distraction (26 cases), monofocal compression (19), bifocal compression/distraction (16) and bone transport (18). Median non-union duration was 10 months (range 2–168). All patients had undergone at least one previous operation (mean 2.2; range 1–5), 38 had associated limb deformity and 49 had non-viable non-unions. Twenty-six cases (33%) had a new simultaneous muscle flap reconstruction at the time of Ilizarov surgery and 25 had pre-existing flaps reused.

Treatment algorithm based on assessment of bone gap and non-union stiffness, measured after resection of non-viable bone.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_23 | Pages 83 - 83
1 Dec 2016
McNally M Ferguson J Diefenbeck M Lau A Stubbs D Scarborough M Ramsden A Atkins B
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Aim

Eradication of infection in chronic osteomyelitis requires effective dead space management after debridement. Residual bacteria in biofilm may be resistant to normal levels of systemic antibiotic penetrating bone and will contribute to recurrence of osteomyelitis. This study evaluated a new antibiotic-loaded biocomposite in the eradication of chronic infection from bone defects.

Patients and Method

We report a prospective study of 100 patients with Cierny and Mader types III and IV chronic osteomyelitis, in 105 bones. Osteomyelitis followed open fracture or ORIF of closed fractures in 71%. Nine had concomitant septic arthritis. 80% had comorbidities (Cierny-Mader Class B hosts). Ten had infected non-unions.

All patients were treated by a multidisciplinary team with a single-stage protocol including; debridement, multiple sampling, culture-specific systemic antibiotics, stabilisation, dead space filling with Cerament G™ and immediate primary skin closure.

Stabilisation was required in 21 cases and 5 required joint fusion as part of the initial surgery. Plastic surgical skin closure was needed in 23 cases (18 free flaps).

Patients were followed up for a minimum of one year (mean 19.5 months; 12–34).


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_23 | Pages 40 - 40
1 Dec 2016
McNally M Diefenbeck M Stubbs D Athanasou N
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Aim

This study describes and correlates the radiographic and histologic changes which develop in a Gentamicin-eluting synthetic bone graft substitute* in the management of bone defects after resection of chronic osteomyelitis (COM).

Method

100 patients with COM were treated with a single stage procedure, including management of the dead space with insertion of a Gentamicin-eluting synthetic bone graft substitute*. Radiographs of 73 patients with a follow-up of at least 12 months (range 12–33 months) were available for review. Bone defects were diaphyseal in 32, metaphyseal in 34 and combined in 7 patients. In 3 patients, radiographs were not of sufficient quality to allow analysis.

Five patients had subsequent surgery, not related to recurrence of infection, which allowed biopsy of the implanted material. These biopsies were harvested between 12 days and 9 months after implantation. Tissue was fixed in formalin and stained with haematoxylin-eosin and immunohistochemically for bone matrix markers.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_16 | Pages 19 - 19
1 Dec 2015
Li H Finney J Kendall J Shaw R Scarborough M Atkins B Ramsden A Stubbs D Mcnally M
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Bone and joint infections are not only common but their management can be technically complex. They carry significant healthcare costs and are a daunting experience for patients [1]. Frequently, multiple operations are required in order to treat the infection. Each surgical intervention usually results in greater bone loss, worsening skin and soft tissue scarring and increasingly diverse and resistant micro- organisms [2].

Specialist bone infection units involving highly integrated orthopaedic and plastic surgery, as well as infection physicians, may improve patient outcomes [3–4]. However, it is difficult to determine the hierarchy of factors contributing to outcome of treatment. This problem is confounded by a lack of structured, prospective data collection in many units around the world.

In 2014, we designed a modular database which allows collection of patients’ details, components of the disease, the treatment, microbiology, histology, clinical outcome and patient-reported outcome measures (PROMS). The registry was implemented in November 2014 and has already demonstrated its function as a Hospital-wide service evaluation tool.

Over 200 patients have been referred to the unit and their baseline demographic information registered. Their progress through the bone infection unit patient pathway is prospectively monitored with use of the registry and data collection ongoing. We aim to present the preliminary clinical outcomes of these 200 patients including surgical procedures performed, key microbiology results, antibiotic treatment regimens and patient reported outcomes.

Our goal is to demonstrate that a bone infection registry is an integral part of infection management clinical practice. It can be used for designing service provision, assist in allocating healthcare resources and expand the evidence base for specialist bone infection units in managing complex orthopaedic infections.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_16 | Pages 21 - 21
1 Dec 2015
Mcnally M Ferguson J Kendall J Dudareva M Scarborough M Stubbs D
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To evaluate the clinical outcome of three different local antibiotic delivery materials, used as bone defect fillers after excision of chronic osteomyelitis.

We reviewed all patients receiving Collagen Fleece with Gentamicin (Septocoll E)(n=74), Calcium Sulphate with Tobramycin pellets (Osteoset T)(n=166) or Calcium Sulphate/Hydroxyapatite biocomposite with Gentamicin (Cerament G)(n=73) for dead space filling after resection of C-M Stage III and IV chronic osteomyelitis. Data was collected on patient comorbidities, operation details, microbiology, postop complications and need for plastic surgery or external fixation. All operations were performed by two surgeons. All patients had similar systemic antibiotic therapy and rehabilitation.

Primary outcomes were recurrence rate, fracture rate and wound leakage rate.

All three groups had very similar mean age and range, microbiological cultures, need for free muscle flaps or local flaps, proportion of femur, tibia and upper limb bones and use of external fixation. There were small differences in the proportion of C-M Class B hosts and anatomic Type IV cases, between the groups. All patients were followed up for at least one year. Mean follow-up was 1.75 years for Septocoll E, 1.96 years for Osteoset T and 1.78 years for Cerament G.

After surgery, there were fewer prolonged wound leaks with Cerament G (leakage persisting for more than 2 weeks). Fracture rates and infection recurrence were twice as common with Osteoset T compared with Cerament G at between one and two years after operation (see Table).

The use of a biocomposite material delivering local aminoglycoside was associated with lower recurrence rates and few wound problems, compared with collagen or calcium sulphate alone. This may reflect the higher levels of antibiotic in the defect and controlled release profile. The improved recurrence rate was despite a higher percentage of compromised Class B hosts.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_10 | Pages 28 - 28
1 Jul 2014
Jacobs N Sutherland M Stubbs D McNally M
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The purpose of this study is to provide a systematic review of the literature and assess outcome of our experience of Ilizarov Bone Transport in reconstruction for primary malignant tumours of bone (PMTB).

A systematic review of the literature for reported cases of primary reconstruction of PMTB using distraction osteogenesis was performed. All cases of distraction osteogenesis for primary reconstruction of PMTB in our institution were reviewed. Outcome was determined from retrospective review of case notes and radiology. Patients were contacted to define final status.

There are few cases of primary reconstruction of PMTB using Ilizarov method in the literature. Most reports relate to benign tumours or reconstruction of secondary deformities or non-union after tumour resection. At our institution we have treated 7 patients with bone defects resulting from excision of a PMTB. Mean age was 42.1 years (23–48). Tumours occurred in the tibia in 4 cases and the femur in 3 cases. Histologic diagnosis was chondrosarcoma in 3, malignant fibrous histiocytoma in 2, adamantinoma in 1 and malignant intraosseous nerve sheath tumour in 1.

All patients were assessed through the hospital sarcoma board and shown to have isolated bone lesions without metastases. Mean bone defect after resection was 13.1 cm (10–17). Mean frame time was 13.6 months (5–23). Mean follow-up was 46 months (15–137). Complications included pin infection, docking site non-union, premature fusion of corticotomy, soft tissue infection and minor varus deformity. There was one local recurrence of tumour at five months after resection, resulting in a through hip disarticulation. The other cases remain tumour-free with united, well-aligned bones and acceptable long-term function.

PMTB is rare and poses a major reconstructive dilemma. Distraction osteogenesis provides an effective method of biologic reconstruction in selected cases, and good outcomes can be achieved.


The Bone & Joint Journal
Vol. 96-B, Issue 6 | Pages 829 - 836
1 Jun 2014
Ferguson JY Dudareva M Riley ND Stubbs D Atkins BL McNally MA

We report our experience using a biodegradable calcium sulphate antibiotic carrier containing tobramycin in the surgical management of patients with chronic osteomyelitis. The patients were reviewed to determine the rate of recurrent infection, the filling of bony defects, and any problems with wound healing. A total of 193 patients (195 cases) with a mean age of 46.1 years (16.1 to 82.0) underwent surgery. According to the Cierny–Mader classification of osteomyelitis there were 12 type I, 1 type II, 144 type III and 38 type IV cases. The mean follow-up was 3.7 years (1.3 to 7.1) with recurrent infection occurring in 18 cases (9.2%) at a mean of 10.3 months post-operatively (1 to 25.0). After further treatment the infection resolved in 191 cases (97.9%). Prolonged wound ooze (longer than two weeks post-operatively) occurred in 30 cases (15.4%) in which there were no recurrent infection. Radiographic assessment at final follow-up showed no filling of the defect with bone in 67 (36.6%), partial filling in 108 (59.0%) and complete filling in eight (4.4%). A fracture occurred in nine (4.6%) of the treated osteomyelitic segments at a mean of 1.9 years (0.4 to 4.9) after operation.

We conclude that Osteoset T is helpful in the management of patients with chronic osteomyelitis, but the filling of the defect in bone is variable. Prolonged wound ooze is usually self-limiting and not associated with recurrent infection.

Cite this article: Bone Joint J 2014; 96-B:829–36


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_III | Pages 42 - 42
1 Feb 2012
Nagarajah K Aslam N Stubbs D McNally M
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Introduction

The Ilizarov method for non-union comprises a range of treatment protocols designed to generate tissue, correct deformity, eradicate infection and secure union. The choice of specific reconstruction method is difficult, but should depend on the biological and mechanical needs of the non-union. We present a prospective series of patients with non-union of the tibia managed using a treatment algorithm based on the Ilizarov method and the viability of the non-union.

Patients and methods

Forty-four patients (34 men and 10 women) were treated with 26 viable and 18 non-viable non-unions. Mean duration of non-union was 19 months (range 2-168). 25 patients had associated limb deformity and 37 cases were infected. 42 patients had undergone at least one previous operation. Bone resection was dictated by the presence of non-viable and infected tissue. Four Ilizarov protocols were used (monofocal distraction in 18 cases, monofocal compression in 11 cases, bifocal compression-distraction in 10 cases and 5 bone transports) depending on the stiffness of the non-union or the presence of segmental defect.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_III | Pages 133 - 133
1 Feb 2012
Nagarajah K Aslam N Stubbs D Sharp R McNally M
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Introduction

Ankle fusion presents a difficult problem in the presence of infection, inadequate soft tissue, poor bone stock and deformity. Nonunion and infection remains a problem even with internal fixation. Ilizarov frame provides an elegant solution to the problem with stable remote fixation while allowing lengthening, deformity correction and weight bearing.

Patients and methods

Twenty-one consecutive patients were studied. The mean age at onset of disease was 52 years (range 4-70). Mean duration of the problem was 59.9 months (6-372). Aetiology included traumatic arthritis in 5, traumatic arthritis with osteomyelitis in 1, failed ankle fusion in 8, septic arthritis in 1, infected ankle fracture nonunion in 1, avascular necrosis of talus in 1, congenital deformity in 3 and failed ankle arthroplasty in 1. 15 patients had deformity of the ankle at the time of presentation. 15 of the 21 patients had either clinical or radiological evidence of infection. Treatment principles involved local excision, deformity correction with good alignment and soft tissue management. Static Compression was achieved with an Ilizarov frame while dynamic fixation was performed in 3 cases for lengthening. Antibiotics treatment was continued until union in the infected cases. On achieving union the frame was removed and a below knee cast was applied for 4 weeks.