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Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_7 | Pages 16 - 16
1 May 2018
Bennett P Stevenson T Sargeant I Mountain A Penn-Barwell J
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It is unclear whether combat casualties with complex hindfeet fractures would have an improved outcome with reconstruction or amputation. This study aimed to determine the outcomes of British military casualties sustaining calcaneal fractures. In the 12 years of conflict in Iraq and Afghanistan there were 116 calcaneal fractures in 98 patients. Seventy-four patients (74/98 76%) were contactable, providing follow up data for 85 fractures (85/116 73%). Median follow up was 5-years (64 months, IQR 52–79). Thirty limbs (30/85 35%) had undergone trans-tibial amputation at time of follow-up: there was no association between open fractures and requirement for amputation (p=0.06). Definitive treatment choice had a significant association with later requirement for amputation (p=0.0479). Fifty-two patients (52/74 70%) had been discharged from the military due to their injuries: there was a significant association between amputation and military discharge (p=0.001). Only 17 patients (17/74 23%) had been able to complete a military fitness test since their injury. The median physical component score of the SF-12 quality of life outcome tool for those undergoing amputation was 51.9 (IQR 48.1–54.3). The median for those retaining their limb was 44.1 (IQR 38.6–53.8). The difference between the two cohorts was not statistically significant (p=0.989).


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_7 | Pages 17 - 17
1 May 2018
Bennett P Stevenson T Sargeant I Mountain A Penn-Barwell J
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This is a retrospective study examining the injury pattern, management and short-term outcomes of British Military casualties sustaining hindfoot fractures from the conflicts in Iraq and Afghanistan. In the 12-years of war, 114 patients sustained 134 hindfoot injuries. The calcaneus was fractured in 116 cases (87%): 54 (47%) were managed conservatively, with 30 (26%) undergoing internal fixation.

Eighteen-month follow-up was available for 92 patients (81%) and 114 hindfeet (85%). Nineteen patients (17%) required trans-tibial amputation in this time, with a further 17 (15%) requiring other revision surgery. Deep infection requiring surgical treatment occurred in 13 cases (11%) with S. aureus the commonest infective organism (46%). Deep infection was strongly associated with operative fracture management (p=0.0022). When controlling for multiple variables, the presence of deep infection was significantly associated with a requirement for amputation at 18 months (p=0.001). There was no association between open fractures and requirement for amputation at 18 months (p=0.926), nor was conservative management associated with amputation requirement (p=0.749).


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_7 | Pages 19 - 19
1 May 2018
Stewart S Bennett P Stapley S Dretzke J Bem D Penn-Barwell J
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Bone non-union following fracture is a major cause of morbidity in combat casualties.

The various clinical treatments used to prevent or treat non-union remain of limited efficacy. Research therefore continues in pre-clinical animal models in an attempt to identify an effective clinical treatment. The aim of this study was to systematically evaluate emerging pre-clinical therapies in order to rationalise priorities for translational research.

The methodological protocol of this study was registered with the Collaborative Approach to Meta Analysis and Review of Animal Data from Experimental Studies (CAMARADES) and published.

The review identified 3251 animal studies, 851 of which fulfilled the criteria for inclusion as detailed in the protocol. Of these, 702 of the studies described therapies that had progressed to clinical trials and were therefore excluded. The remaining 149 papers described eighteen categories of therapy that represent novel therapies yet to translate to clinical trials. These studies used a range of animal models, with heterogeneity that precluded formal synthesis and meta-analysis.

This study provides a systematic evaluation of novel therapies with potential to prevent or treat non-union. It also represents a novel application of an emerging epidemiological technique to address a key priority in Combat Casualty Care research.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_8 | Pages 22 - 22
1 Jun 2015
Penn-Barwell J Bennett P Wood A Reed M
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In June 2012 the Orthopaedic Speciality Advisory of the Joint Committee on Surgical Training defined ‘minimum indicative numbers’ that trainees would have to meet before completion of specialist training. It has been speculated that regions have varied in their ability to provide operative opportunities to their trainees. This study aims to test the hypothesis that there are regional differences in operative training experience. The eLogbook database was interrogated for cases over a 12 month period from 7 August 2013 to 5 August 2015. Within each region, the mean of the cases registered by orthopaedic trainees in each year of training during the study period was calculated and summed to give a representative surgical experience for the years ST3-8. First surgeon only cases were analysed for 11 index procedures in 30 T&O rotations. Considerable variation in training existed across rotations. In three index procedures, including DHS, no rotation achieved the minimum indicative number required. All rotations achieved the minimum indicative number of external fixator applications. This study proves the extent of the significant regional variation in surgical training in Trauma and Orthopaedics in the UK and raises concerns regarding the volume of operative training currently achieved.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_5 | Pages 17 - 17
1 May 2015
Penn-Barwell J Myatt RW Bennett P Sargeant I
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The aim of this study was to determine medium term functional outcomes in military casualties undergoing limb salvage for severe open tibia fractures, and compare them to trans-tibial amputees. Cases of severe open diaphyseal tibia fractures sustained in combat between 2006 – 2010 were contacted and interviewed. These results were compared to a similar cohort of 18 military patients who sustained a unilateral trans-tibial amputation in the same period. Forty-nine patients with 57 severe open tibia fractures met the inclusion criteria, of which 30 patients (61%) were followed-up. Ten of the 30 patients required revision surgery, 3 of which involved conversion to a circular frame. Twenty-two of the 30 patients (73%) recovered sufficiently to complete a basic military fitness test. The median physical component score of SF-36 in the limb salvage group was 46 (IQR 35–54) which was similar to the trans-tibial amputation cohort (p=0.3057, Mann-Whitney). There was no significant difference in the proportion of patients in either the amputation or limb salvage group reporting pain (p=0.1157, Fisher's exact test) or with respect to SF-36 physical pain scores (p=0.5258, Mann-Whitney). This study demonstrates that medium term outcomes for military patients are similar following trans-tibial amputation or limb salvage following combat trauma.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_5 | Pages 19 - 19
1 May 2015
Penn-Barwell J Bennett P Mortiboy D Fries C Groom A Sargeant I
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The aim of this study was to characterise severe open tibial shaft fractures sustained by UK military personnel over 10-years of combat and to determine the infection rate and factors that influence it. The UK military Joint Theatre Trauma Registry was searched and X-rays, clinical notes and microbiological records were reviewed for all patients. One hundred GA III open tibia fractures in 89 patients were identified. Three fractures were not followed up for 12-months and were therefore excluded. Twenty-two (23%) of the remaining 97 tibial fractures were complicated by infection requiring surgical treatment, with S. aureus being the causative agent in 13/22 infected fractures (59%). Neither injury severity, mechanism, the use of an external fixator, the need for vascularised tissue transfer or smoking status were significantly associated with infection. Bone loss was significantly associated with subsequent infection (p<0.0001). Most infection in combat open tibia fractures is caused by familiar organisms i.e. S. aureus. The use of external fixators to temporarily stabilise fractures is not associated with an increased risk of subsequent infection. While the overall severity of a casualty's injuries was not associated with infection, the degree of bone loss from the fracture was.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_9 | Pages 25 - 25
1 May 2014
Myatt R Penn-Barwell J Bennett P Sargeant I
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The aim of this study was to establish medium term outcomes in military casualties following severe open tibia fractures.

Cases from a previously published series were contacted and assessed with the SF-36 outcome tool. Their results were then compared to a similar study of military trans-tibial amputees.

Of the original data set of 49 patients, 30 patients were followed up and completed an SF-36 (61%) with a median follow-up of 4 years (49 months, IQR 397–63). Ten of the 30 required revision surgery, 3 of which involved conversion from initial fixation to a circular frame. Twenty-two of the 30 patients recovered sufficiently to complete a military basic fitness test. The median physical component of SF-36 in the tibia fracture group was 46 (IQR 35–54) which was similar to the trans-tibial amputation cohort (p=0.3057, Mann-Whitney). Similarly there was no difference in mental component scores (p=0.1595, Mann-Whitney). There was no significant difference in the proportion of patients in the amputation or fracture group reporting pain (p= 0.1157, Fisher's exact test) or with respect to SF-36 physical pain scores (p=0.5258, Mann-Whitney).

We present the patient reported outcomes following combat open tibia fracture and show that they are similar to those achieved after trans-tibial amputation.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_9 | Pages 22 - 22
1 May 2014
Penn-Barwell J Anton FC Bennett P Midwinter M Baker A
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The UK Military Trauma Registry was searched for all RN/RM personnel injured between March 2003 and April 2013. These records were then cross-referenced with the records of the Naval Service Medical Board of Survey which evaluates injured RN/RM personnel for medically discharge, continued service in a reduced capacity or return to full duty (RTD). Population at risk data was calculated from service records.

There were 277 casualties in the study period: 61 (22%) of these were fatalities; of the 216 survivors, 63 or 29% were medically discharged; 24 or 11% were placed in a reduced fitness category. A total of 129 individuals (46% of the total and 60% of survivors) returned to full duty. The greatest number of casualties was sustained in 2007; there was a 3% casualty risk per year of operational service between 2007–2013. The most common reason cited by the Naval Service medical board of survey for medical downgrading or discharge was injuries to the lower limb with upper limb trauma being the next most frequent injury.

This study characterises the injuries sustained by RN and RM personnel during recent conflicts and demonstrates significant challenge of predominantly orthopaedic injuries for reconstructive and rehabilitation services.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_26 | Pages 2 - 2
1 Jun 2013
Penn-Barwell J Bennett P Kay A Sargeant I
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The UK Military Trauma Registry was searched for all cases of primary bilateral lower limb amputation sustained over 6-years between March 2004 and March 2010. There were 1694 UK military patients injured or killed during this six-year study period.

Forty-three of these (2.8%) were casualties with bilateral lower limb amputations. All were men injured in Afghanistan by Improvised Explosive Devices. Six casualties were in vehicles when they were injured with the remaining 37 (80%) patrolling on foot. The mean New Injury Severity Score was 48.2 (SD 13.2). Nine patients also lost an upper limb (triple amputation); no patients survived loss of all four limbs. Six patients (14%) sustained an open pelvic fracture. Perineal/genital injury was a feature in 19 (44%) patients, ranging from unilateral orchidectomy to loss of genitalia and permanent requirement for colostomy and urostomy. The mean requirement for blood products was 66 units (SD=41.7). The minimum transfusion requirement was 8 units and the greatest was a patient requiring a total of 193 units of blood products.

Our findings detail the severe nature of these injuries together with the massive surgical and resuscitative efforts required to firstly keep patients alive and secondly reconstruct and prepare them for rehabilitation.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_26 | Pages 6 - 6
1 Jun 2013
Bennett P Sargeant I Penn-Barwell J
Full Access

This study aimed to characterise severe open femoral fractures sustained by military personnel and to describe their orthopaedic management and preliminary outcomes. The UK Military Trauma Registry was searched for open femoral fractures sustained between 2006–2010. Clinical records and radiographs were reviewed and data gathered on demographics, injury, management and preliminary outcomes.

Thirty-four patients with 34 open femoral fractures were eligible for inclusion. The mean NISS was 22.4 (SD 12.28). Nineteen fractures were caused by gunshot wounds (56%), with the remainder due to blasts. Three patients (9%) suffered Grade 4 segmental bone loss. Intramedullary nailing was used in 22 patients (69%). A minimum of 12 month follow up was available for 33 patients (97%). Twenty-three patients (70%) had achieved fracture union within the first twelve months. One patient suffered deep infection requiring surgical debridement. Ten patients (30%) underwent a revision procedure due to femoral shortening or malunion: two required a transfemoral amputation. There was a significant association between bone loss and a poor outcome (revision surgery) at 12 months (p=0.00016). Infection rates were significantly lower in open femoral fractures when compared to similar published work on open tibial fractures (p=0.0257).


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XV | Pages 6 - 6
1 Apr 2012
Penn-Barwell JG Bennett P Power D
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Hand injuries are common in military personnel deployed on Operations. We present an analysis of 6 years of isolated hand injuries from Afghanistan or Iraq. The AEROMED database was interrogated for all casualties with isolated hand injuries requiring repatriation between April 2003 and 2009. We excluded cases not returned to Royal Centre for Defence Medicine (RCDM). Of the 414 identified in the study period, 207 were not transferred to RCDM, 12 were incorrectly coded and 41 notes were unavailable. The remaining 154 notes were reviewed. 69% were from Iraq; only 14 % were battle injuries. 35% were crush injuries, 20% falls, 17% lacerations, 6% sport, 5% gun-shot wounds and 4% blast.

Injuries sustained were closed fractures (43%), open fractures (10%), simple wounds (17%), closed soft tissue injuries (8%) tendon division (7%), nerve division (3%), nerve/tendon division (3%) complex hand injuries (4%). 112 (73%) of the casualties required surgery. Of these 44 (40%) had surgery only in RCDM, 32 (28%) were operated on only in deployed medical facilities and 36 (32%) required surgery before and after repatriation. All 4 isolated nerve injuries were repaired at RCDM; 2 of the 4 cases with tendon and nerve transection were repaired before repatriation. Of the 10 tendon repairs performed prior to repatriation 5 were subsequently revised at RCDM.

This description of 6 years of isolated hand injuries in military personnel allows future planning to be focused on likely injuries and raises the issue of poor outcomes in tendon repairs performed on deployment.