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Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_7 | Pages 1 - 1
1 May 2018
Hipps D Robertson G Keenan A Wood A
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Tibial plateau fractures classically present in a bimodal distribution associated with high energy mechanisms in the younger population and fragility fractures in the elderly populations as a result they are well suited for looking at the effect major trauma centre status. Military trauma surgeons in training should be exposed to as much young high-energy trauma as possible to equip them for operations.

Retrospective review of all tibial plateaus presenting to RVI 20 months before MTC status and 20 months following this.

61 patients pre, 66 post. Schatzker grade 1–4 were similar pre and post change. Post change there was an increase in Schatzker 5 (62%) and 6 (27%). High energy injuries were most common in younger males, cause was falls followed by RTAs.

MTC status has meant an increase in high energy tibial plateaus (Schatzker 5–6) These were predominantly seen in younger males with high-energy mechanisms. As this is likely to be replicated across all injuries, we would recommend military trauma surgeons have a significant period of time training in major trauma centres to ensure adequate exposure to young high energy trauma.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_9 | Pages 11 - 11
1 May 2014
Wood A Robertson G Macleod K Heil K Keenan A Court-Brown C
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Open fractures are uncommon in the UK sporting population, however because of their morbidity then are a significant patient group. Currently there is very little in the literature describing the epidemiology of open fracture in sport. We describe the epidemiology of sport related open fractures from one centre's adult patient population.

Retrospective analysis of a prospectively collected database recording all sport related open fracture s over a 15 year period in a standard population.

Over the 15 year period, there were 85 fractures in 84 patients. The mean age was 29.2 years (range 15–67). 70 (83%) were male and fourteen female (17%). The six most common sports were football (n=19, 22%), rugby (n=9, 11%), cycling (n=8, 9%), hockey (n=8, 9%); horse riding (n=6, 7%) and skiing (n=6, 7%). The top five anatomical locations were fingers phalanges, 35%; tibia-fibula 23%; foreman 14%; ankle 11% and metacarpals 5%. The mean injury severity score was 7.02. Forty five patients were grade 1; 28 patients were grade 2; 8 patients were grade 3a; and 4 were grade 3b according to the Gustilo-Anderson classification system. Seven patients (8%) required plastic surgical intervention for the treatment of these fractures. The types of flaps used were split skin graft (n=4), fasciocutaneous flaps (n=2); and adipofascial flap (n=1).

We looked at the epidemiology open fractures secondary to sport in one centre over a 15 year period. Football was the most common sport (22%) and within football, the most common site was the tibia and fibula. In contrast, within the cohort a whole the majority of fractures were upper limb, with the hand being the most common site. Whilst not common in sport, when they are sustained they are frequently occur on muddy sport fields or forest tracks and must be treated appropriately. A good understanding of the range and variety of injuries commonly sustained in different sports is important for clinicians and sports therapists.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_6 | Pages 31 - 31
1 Apr 2014
Keenan A Henderson L Michaelson C Tsirikos A
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Aim:

To present the results of multi-modal IOM in 298 patients who underwent spinal deformity correction.

Method:

We reviewed the notes, surgical and IOM charts of all patients who underwent spinal surgery with the use of cortical and cervical SSEPs, as well as upper/lower limb transcranial electrical MEPs under the senior author. We recorded IOM events which we categorised as true, transient true and false (+) or (−). We correlated the IOM events with surgical or anaesthetic incidents.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_26 | Pages 18 - 18
1 Jun 2013
Heil K Keenan A Penn-Barwell J Wood A
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Some military personnel are having Femoral Acetabular Impingement (FAI) surgery. The use of the alpha angle (AA) to help assess the diagnosis is common. Currently there are no standardised values available across a asymptomatic pre-arthritic population.

Retrospective analysis of 200 consecutive individuals (400 hip joints) with ages 20 to 50, who had a CT performed between 1 Apr 2011 and 29 Nov 2011 due to abdominal pathology. The AA of Notzli was measured on the axial view.

The mean AA value was 53.5 (95%CI 1.30) for Right hips and 53.4 (95% CI 1.31) for the left. In age 20–30 Right 52.6 (95%CI 3.5) the Left 52.0 (95%CI 2.9), 31–40 Right 53.9 (95%CI 2.5) Left 53.4 (95%CI 3.1), 41–50 Right 53.8 (95% CI 1.9) Left 53.2 (95% CI 1.8). Mean male Right 52.9 (95% CI 1.5) Left 53.2 (95%CI 1.9) Female Right 52.5 (95% CI 1.5) Left 49.9 (95% CI 1.6). 144/400 (37%) of patients had angle >55 degrees.

Previous literature suggests an AA >55 degrees is diagnostic of FAI, we suggest that the AA is highly variable across age and sex and that >1/3rd of asymptomatic patients will have an AA that was previously regarded as abnormal.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_26 | Pages 21 - 21
1 Jun 2013
Robertson G Wood A Heil K Keenan A Aitken S Court-Brown C
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Rugby union is the second commonest cause of sporting fracture in the UK. Yet little is known about patient outcome following such fractures.

All rugby union fractures sustained during 2007–2008 in the Lothian were prospectively recorded. Patients were contacted by telephone in February 2012 to ascertain their progress in returning to rugby.

There were 145 fractures in 143 patients, including 122 upper limb and 25 lower limb fractures. 117 fractures (81%) were followed at mean 50 months (range 44–56 months). 87% returned to rugby post injury, with 85% returning to rugby at the same level or higher. 77% returned by three months and 91% by six months. In upper limb fractures 86% returned by six months and 94% by six months. In lower limb fractures 42% returned by three months and 79% by six months. 32% had ongoing fracture related problems. 9% had impaired rugby ability secondary to fractures.

Most patients sustaining a fracture playing rugby union will return to rugby at a similar level. While one third of them will have persisting symptoms post-injury, for the majority this will not impair their rugby ability.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_26 | Pages 22 - 22
1 Jun 2013
Trudeau T Wood A Keenan A Aitken S Court-Brown C
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Alcohol remains a significant cause of disease in the UK population. Yet the effect of alcohol on fractures remains conflicting. We present a prospective analysis of self-reported alcohol consumption and the epidemiology of fractures sustained.

1950 patients over 13 years of age were prospectively interviewed after sustaining a fracture with basic epidemiological data, fracture data and average alcohol consumption recorded.

1621 (83%) of interviewees provided information on alcohol consumption. 10% admitted to drinking in excess of Scottish Health guidelines. 18.1% of males drunk to excess, compared to 4.7% of females (p<0.001). The five most frequent fractures were distal radius (20%), metacarpals (12%), ankle fractures (12%), neck of femur (10%), phallanges (10%). 48% of fractures were falls from standing height. Excess drinkers were more likely to sustain an AO grade C fractures than safe drinkers (18.1% compared to 11.2%, p<0.05). Excess drinkers sustained more open fractures than safe drinkers (5% compared to 1%, p<0.001). Excess drinkers were on average 5.66 years younger than safe drinkers at the time of injury (44.57 years compared to 50.23 years, p<0.05).

People reporting alcohol excess who have sustained a fracture are more likely to be younger and suffer more severe fractures than those drinking within current guidelines. Opportune targetting of patients consuming excess alcohol should be targetted at problem drinkers sustaining a fracture.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_21 | Pages 5 - 5
1 Apr 2013
Shalaby H Wood A Keenan A Arthur C
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Introduction

Longstanding complex muliplanar foot deformities represent a significant challenge. The traditional surgical techniques involve excessive dissection and excision of large bony wedges or modifications of the triple fusion to correct the deformity. The majority of the reports in the literature present collective data on different deformity patterns and also mix paediatric and adult patients, even with multiple correction techniques. The aim of this study was to evaluate the clinical, radiological and functional outcomes of the gradual correction of a single common deformity pattern of equino-cavo-varus using a single correction technique of the V-osteotomy and the Ilizarov frame.

Material and methods

We present prospectively collected data on 40 feet in 35 adult patients with stiff longstanding equino-cavo-varus deformity. All patients had a V-osteotomy and gradual correction using an Ilizarov frame, with a mean follow-up of 20 months. We collected the American Orthopaedic Foot and Ankle Scocity score (AOFAS), the Foot and Ankle Disability Index (FADI) and a Visual Analogue Pain score (VAS) for all ptients preoperatively and between 1 and 2 years following frame removal.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_8 | Pages 4 - 4
1 Feb 2013
Keenan A Wood A Beattie N Boyle R Doogan F Court-Brown C
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The collective orthopaedic literature appears to highlight the Jones fracture of the fifth metatarsal, as being slow to heal, and having a high incidence of non-union. There remains a lot of confusion, throughout the orthopaedic literature, about the exact nature of this fracture.

The authors present the largest case series currently published of 117 patients who sustained a Jones fracture, demonstrating patient outcomes with different modalities of care.

All Medical notes from the Emergency Department are recorded on a database.

A computer program was use to search the Emergency department database of the Edinburgh Royal infirmary notes data base for the terms 5th metatarsal combined with a coding for referral to fracture clinic over a 6 years period from 2004–2010. The researchers went through the X-ray archive, identified and classified all 5th metatarsal fractures.

There were 117 patients in our series, refracture rate 7/117 6%. Average time to discharge 13 weeks (4–24). 18% of patients took longer than 18 weeks for their fracture to clinically heal. 34% were clinically healed at less than six weeks, with only 7% radiologically healed at six weeks. There was no significant difference in outcome between cast, moonboot, tubigrip or hard shoe in terms of outcome.

A large proportion of Jones fractures have delayed healing, patients who are clinically asymptomatic may not have radiological healing. Currently in our practice there is no uniform management of Jones fractures. We discuss the difference in healing rates for different management techniques.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 503 - 503
1 Sep 2012
Robertson G Wood A Bakker-Dyos J Aitken S Keenan A Court-Brown C
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To describe the treatment and morbidity of lower limb (LL) football fractures in regard to returning to football in a known UK population at all skill levels.

All football fractures during 2007–2008 sustained by the Lothian population were prospectively collected with the diagnosis being confirmed by the senior author when patients attended the only adult orthopaedic service in Lothian. Patients living outside the region were excluded from the study. Patients were contacted in August 2010 to ascertain their progress in return to football.

There were 424 fractures in 414 patients. 366 fractures (86%) in 357 patients (86%) were followed up with a mean interval of 30 months (range 24–36 months). Of these 32% were sustained in the LL. 88% of LL injuries returned to football compared to 85% of upper limb (UL) fractures (p=0.4). 60% of LL patients were treated as outpatients. 35% were operated on −26% had ORIF and 9% IM Nailing. The most common LL fractures were Ankle 38%, Tibial Diaphysis 14%, 5th Metatarsal 11%, Fibula 9% and Great Toe 7%. Only one of the fractures was an open injury - Gustillo Class 1 2nd Phallanx Foot. Three of the 12 patients who underwent IM nailing required fasciotomy. One patient in the operative cohort developed a significant infection. The mean time for return to football for conservative treatment was 17 weeks (range 3–104 weeks), and for operative treatment 41 weeks (range 10–104 weeks). 91% of patients treated conservatively returned to football, compared to 84% of the operative cohort (p=0.3). 43% of patients had ongoing symptoms from their injury. 9% of the operative cohort required removal of metal work or further operative intervention. 83% of patients returned to the same level of football or higher following injury. Patients under 30 were 1.4 times more likely to return to sport than those over 30 (p<0.05).

We have previously demonstrated that football is the most common cause of sporting fracture(1), yet little is known about patient outcome following fractures. LL fractures are less common than UL fractures, and there is no difference in the proportion of patients returning to football following LL fractures and UL fractures. Over half of LL fractures are treated as outpatients and the incidence of open fractures is very low. There is no significant difference between the operative and conservative groups in their return to football. In the over 30 age group, sustaining a fracture may act as a catalyst to quit football. This may explain the higher non-return rate compared to the under 30 age group. 43% of patients perceive that they have ongoing problems with their fracture over 24 months post-injury reflecting the considerable morbidity of football-related fractures.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 210 - 210
1 Sep 2012
Wood A Bell D Keenan A Arthur C Court-Brown C
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Introduction

In an ageing population the incidence of patients sustaining a neck of femur fracture is likely to rise. Whilst the neck of femur fracture is thought to be a pre-terminal event in many patients, there is little literature following this common fracture beyond 1 year. With improving healthcare and increasing survival rate, it is likely that a proportion of patients live to have subsequent fractures. However little is known about if these occur and what the epidemiology of these fractures are.

Aim

To describe the epidemiology of fractures sustained over a ten year period in patients who had an “index” neck of femur fracture.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XLI | Pages 18 - 18
1 Sep 2012
Keenan A Wood A Walmsley P
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The aim of this study was to compare the long-term outcome from total knee replacement (TKR) in young versus old patients in terms of pain and functional outcome.

We used our arthroplasty database which recorded prospectively pain and American Knee Society scores at regular intervals over ten years after TKR. The procedures used a modern, cemented resurfacing type cruciate retaining prosthesis. A cohort of young patients (< 55 years) were identified. A control group of patients ≥ 56 was identified, matching for ASA, body mass index and underlying condition. Change over time was analysed using a factorial repeated measures ANOVA test, which allowed for investigation of difference between groups.

40 Knees in 26 patients were identified. 2 patients died prior to follow up, 2 were revised within the study period. (1 for infection at 2 years and one for change of poly at 7 years) and a further 4 were lost to follow up. 7 knees could not be matched and were excluded. This left a study group of 24 young and 24 older knees.

Pain scores (p=0.025) and American Knee Society “Knee” (p<0.001) and “Function” (p<0.001) scores changed significantly over time. There were however no statistical differences over the 10 year period in pain (p=0.436) and knee performance (0.618) but overall function was higher throughout the period in the younger group (=0.004).

Knee replacement in younger patients produces similar outcomes in terms of pain and function compared with older patients and TKR should not be withheld purely on account of age.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XLI | Pages 90 - 90
1 Sep 2012
Wood A Davis A Keenan A Arthur C Brenkel I
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Current literature comparing the effect on body mass index (BMI) on the outcome of total hip replacements (THR) is inconclusive. To describe the effect of BMI on THR over the first five years.

We prospectively recruited 1,617 patients undergoing primary THR for osteoarthritis and followed them up at 5 years, recording, dislocations, revisions, deep and superficial infections, Harris Hip scores (HHS) and SF-36. A multivariate analysis was performed to identify if BMI is an independent predictor of adverse outcome.

148 (9%) patients had a BMI >35. 6.8% of patients with a BMI >35 had a dislocation by 5 year post op compared with 3.2%BMI 30–34.9, 2% BMI 25–29.9 and 1.5% BMI<25 (p=0.03) Superficial infections 14.2% BMI >35, 4.4% BMI <25. In SF 36 scores only Mental Health and change in health had no significant differences with an increase in BMI having a statistically significant decrease in all other SF scores. HHS had a mean improvement of 45.1 at five years with an expected loss of 0.302 HHS points (95% CI0.440–0.163) per 1 point BMI increase. There was no significant difference in deep infections, mortality <3 months, revision rates or length of stay.

The most significant risk in increasing BMI is the dislocation rate, possibly representing increased technical difficulty in larger patients. Whilst increasing BMI has a reduced HHS and SF16 score, the overall benefit is still positive.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XLI | Pages 16 - 16
1 Sep 2012
Smith R Wood A Keenan A Sabnis B Walmsley P Brenkel I
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The risk of venous thrombo-embolism (VTE) is high in orthopedics. Oral direct factor Xa inhibitors have been introduced to help reduce the incidence of VTE. To reduce post-operative bleeding antifibrinolytics are used. We aimed to ascertain the effect of two drugs on post operative bleeding and transfusion requirements.

We prospectively recorded patient demographics, operative details, complications, transfusion incidence and VTE incidence in TKR patients. We also sent out questionnaires to patients asking about wound bleeding and VTE. All patients were given 10mg Rivaroxaban 8 hours post operatively and then OD for 14 or 35 days. Patients given tranexamic acid were given 500mg IV, 5 minutes prior to wound closure at the discretion of the surgeon. VTE was Deep Vein Thrombus or Pulmonary Embolism confirmed by Doppler or CTPA. Minor bleed was categorized as dressing soakage or reported wound leakage, major bleed as hematoma requiring revision within 30 days.

509 patients underwent TKR: 200 (39%) received Rivaroxaban only (Group 1), 296 (58%) also received tranexamic acid (Group 2). 13 (3%) patients had no data available. Five patients had a VTE: 4 (2%) in Group 1, 1 (0.3%) in Group 2 [P<0.05]. 39 patients had a minor bleed: 17 (8.5%) in Group 1, 22 (7.4%) in Group 2 [P=0.5]. 2 patients had major bleeds: 1(0.5%) in Group 1 and 1(0.33%) in Group 2 [P=0.69]. There were 30 blood transfusions: 21 (10.5%) in Group 1, 9 (3%) in Group 2 [P<0.0001].

We have demonstrated a reduced requirement for blood transfusions in the tranexamic acid group. However our results, whilst they show a trend towards decreased minor and major bleeding rates, are not significant and require larger studies looking at wound bleeding and leakage.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XLI | Pages 17 - 17
1 Sep 2012
Keenan A Wood A Arthur C Brenkel I
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We set out to demonstrate the 10-year survivorship of the PFC sigma TKA in a young patient group.

Demographic and clinical outcome data were collected prospectively at 6 months, 18 months, 3 years, 5 years and 8–10 years post surgery.

The data were analysed using Kaplan Meier survival statistics with end point being regarded as death or revision for any reason.

203 patients were found to be < 55 years at the time of surgery. Four patients required revision and four patients died. Another four patients moved away from the region and were excluded from the study.

A total of 224 knees in 199 patients (101 male and 98 females.) 168 patients had a diagnosis of Osteoarthritis and 28 with inflammatory arthritis. Average age 50.6 years range 28–55 years (median 51). Ten-year survivorship in terms of revision 98.2% at ten years 95% confidence interval.

Our results demonstrate that the PFC Sigma knee has an excellent survival rate in young patients over the first 10 years. TKR should not be withheld from patients on the basis of age.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXII | Pages 31 - 31
1 Jul 2012
Wood A Hales R Bakker-Dyos J Chapman M Keenan A
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Previous Anterior Cruciate Ligament (ACL) reconstruction is currently a bar from entry to the Royal Marines and Royal Navy, whilst the British Army allows recruits to join if asymptomatic 18 months post ACL reconstruction. However current Royal Marines policy is to rehabilitate recruits who sustain an ACL disruption in training. We retrospectively analysed the rehabilitation times and pass out rate of Royal Marines who had an ACL disruption during recruit training over an 8 year period.

12 recruits sustained an ACL disruption during recruit training in the study period, giving an incidence of around 1.5/1000 recruits. 9 Patients underwent ACL repairs in training, with 1 patient leaving and rejoining post repair and later successfully passed out. 2 patients were treated conservatively. Of the 12 ACL sustained in training 8/12 (67%) passed out. None of the patients treated conservatively passed out. The mean time out of training for successful recruits was 51.6 weeks (95% CI 13.1) mean rehabilitation time post ACL reconstruction for successful recruits was 36.7 weeks (95% CI 12.5). Mean time to discharge for unsuccessful recruits 63.2 weeks (95% CI 42.4). In the operative group 1/10 left due to failure to return to training and 1/10 left through unrelated reasons. Current costing for recruit training is £1800 per week per recruit.

ACL injuries are not common in Royal Marine Training, and reconstruction is not a bar to completing Royal Marine basic training. We estimate that it costs around £100,000 per-injured recruit, to maintain a policy of rehabilitating ACL injured recruits in Royal Marines training. Further research into the long-term employability or Royal Marines sustaining an ACL injury in training is required.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIX | Pages 40 - 40
1 Jul 2012
Arthur C Keenan A Clayton R Brenkel I Walmsley P
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This study reports the first 10-year clinical and radiological follow-up data for the Sigma PFC. The DuPuy Sigma total knee arthroplasty (TKA) is a modification of the well established Press Fit Condylar (PFC) TKA and is used extensively in the UK and worldwide. It is the most commonly used TKA in England and Wales, where it accounts for 34% of all primary TKA.

A total of 235 consecutive Sigma TKAs were performed in 203 patients between October 1998 and October 1999, in our unit. Patients were seen at a specialist nurse led clinic 7 to 10 days before admission and at 6 months, 18 months, 3 years, 5 years and 7-10 years after surgery. Data was recorded prospectively at each clinic visit. Radiographs were obtained at the 5 year and 8-10 year follow-up appointment.

Of 235 knees 171 (147 patients) were alive at 10 years. Twelve were lost to follow up. Nine knees (3.8%) were revised; five for infection and four underwent change of polyethylene insert. Ten-year survival with and end point of revision for any reason was 95.9%, and with and endpoint of revision for aseptic failure was 98.7%. The mean American Knee Society score was 62 at 8-10 years compared with 31 out of 100 pre-operatively. Of 109 radiographs, 47 knees had radiolucent lines but none showed radiological evidence of loosening.

Our results show that the PFC Sigma knee arthroplasty performs well over the first 10 years post implantation.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIX | Pages 108 - 108
1 Jul 2012
Keenan A Arthur C Jenkins P Wood A Walmsley P Brenkel IJ
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We set out to demonstrate the 10-year survivorship of the PFC sigma TKA in a young patient group.

Demographic and clinical outcome data were collected prospectively at 6 months, 18 months, 3 years, 5 years and 8-10 years post surgery.

The data were analysed using Kaplan Meier survival statistics with end point being regarded as death or revision for any reason.

203 patients were found to be ≤55 years at the time of surgery. Four patients required revision and four patients died. Another four patients moved away from the region and were excluded from the study.

A total of 224 knees in 199 patients (101 male and 98 females.) 168 patients had a diagnosis of Osteoarthritis and 28 with inflammatory arthritis. Average age 50.6 years range 28-55 years (median 51).

Ten-year survivorship in terms of revision 98.2% at ten years 95% confidence interval.

Our results demonstrate that the PFC Sigma knee has an excellent survival rate in young patients over the first 10 years.

TKR should not be withheld from patients on the basis of age.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXII | Pages 2 - 2
1 Jul 2012
Arthur C Wood A Keenan A Clayton R Walmsley P Brenkel I
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The DuPuy Sigma total knee arthroplasty (TKA) is a modification of the well-established Press Fit Condylar (PFC) TKA and is used extensively in the UK and worldwide. This study reports the first 10-year clinical and radiological follow-up data for the Sigma PFC.

A total of 235 consecutive Sigma TKAs were performed in 203 patients between October 1998 and October 1999, in our unit. Patients were seen at a specialist nurse-led clinic 1 week before admission and at 6 months, 18 months, 3 years, 5 years and 7-10 years after surgery. Data was recorded prospectively at each clinic visit.

Of 235 knees, 171 (147 patients) were alive at 10 years. Twelve were lost to follow up. Eight knees (3.4%) were revised; four for infection and four underwent isolated change of polyethylene insert. Ten-year survival with an end point of revision for any reason was 95.9%, and with an endpoint of revision for aseptic failure was 98.7%. The mean American Knee Society score was 62 at 8-10 years compared with 31 out of 100 pre-operatively.

Our results show that the PFC Sigma knee arthroplasty performs well over the first 10 years post-implantation.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXII | Pages 18 - 18
1 Jul 2012
Keenan A Arthur C Wood A Jenkins P Walmsley P Brenkel I
Full Access

The aim of this study was to compare the long-term outcome from total knee replacement (TKR) in young versus old patients in terms of pain and functional outcome.

We used our arthroplasty database, which recorded prospectively pain and American Knee Society scores at regular intervals over ten years after TKR. The procedures used a modern, cemented resurfacing type cruciate retaining prosthesis. A cohort of young patients (≤55 years) was identified. A control group of patients ≥ 56 was identified, matching for ASA, body mass index and underlying condition. Change over time was analysed using a factorial repeated measures ANOVA test, which allowed for investigation of difference between groups. 40 Knees in 26 patients were identified. 2 patients died prior to follow up, 2 were revised within the study period (1 for infection at 2 years and one for change of poly at 7 years) and a further 4 were lost to follow up. 7 knees could not be matched and were excluded. This left a study group of 24 young and 24 older knees. Pain scores (p=0.025) and American Knee Society “Knee” (p<0.001) and “Function” (p<0.001) scores changed significantly over time. There were however no statistical differences over the 10-year period in pain (p=0.436) and knee performance (0.618) but overall function was higher throughout the period in the younger group (=0.004).

We conclude that Knee replacement in younger patients produces similar outcomes in terms of pain and function compared with older patients and TKR should not be withheld purely on account of age.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXIX | Pages 109 - 109
1 Jul 2012
Keenan A Walmsley P Arthur C Wood A Jenkins P Brenkel I
Full Access

The aim of this study was to compare the long-term outcome from total knee replacement (TKR) in young versus old patients in terms of pain and functional outcome.

We used our arthroplasty database which recorded prospectively pain and American Knee Society scores at regular intervals over ten years after TKR. The procedures used a modern, cemented resurfacing type cruciate retaining prosthesis. A cohort of young patients (≤55 years) were identified. A control group of patients > 56 was identified, matching for ASA, body mass index and underlying condition. Change over time was analysed using a factorial repeated measures ANOVA test, which allowed for investigation of difference between groups.

40 Knees in 26 patients were identified. 2 patients died prior to follow up, 2 were revised within the study period. (1 for infection at 2 years and one for change of poly at 7 years) and a further 4 were lost to follow up. 7 knees could not be matched and were excluded. This left a study group of 24 young and 24 older knees.

Pain scores (p=0.025) and American Knee Society “Knee” (p<0.001) and “Function” (p<0.001) scores changed significantly over time. There were however no statistical differences over the 10 year period in pain (p=0.436) and knee performance (0.618) but overall function was higher throughout the period in the younger group (=0.004).

Knee replacement in younger patients produces similar outcomes in terms of pain and function compared with older patients and TKR should not be withheld purely on account of age.