Orthopaedic Eponyms: A Tool of the Past.

Eponyms are commonplace in the medical vernacular, however, their use has become increasingly controversial amongst clinicians. Whilst some view them as an honour bestowed on those whose achievements deserve recognition, others see them as thwarted with problems due to confusion, imprecision and unwittingly applauding controversial figures. Nevertheless, the history and culture retained within eponyms define modern-day medicine. To identify current trends in understanding of eponyms, we presented a questionnaire of orthopaedic eponyms and their associated imaging to unspecialised trainees, specialist orthopaedic trainees, and qualified consultants. Eponymous terms were poorly understood at all levels of experience, with- third and fourth-year Orthopaedic trainees (specialist trainee years five and six (ST5/ST6)) being outperformed (22.3%) by non-specialist postgraduate doctors with two or more years of experience (foundation year two (F2) and core surgery year two (CT2)) (29.3%). Based on these trends we present a further narrative review of the challenges eponyms present, whilst justifying their continued use to acknowledge the origins of our discipline, from the favourable to shameful.

Proximal tibia triplane fracture with apophyseal avulsion.

Tibial tuberosity fractures occur in fewer than 1% of all paediatric fractures. We present this unusual case of an early adolescent football player who presented to the emergency department after sustaining an injury during a tackle. CT confirmed a tibial apophyseal fracture concurrent with a proximal tibial triplane fracture. The fracture was subsequently reduced operatively with cancellous cannulated screws. There are only 11 cases published in the literature of triplane fractures of the proximal tibia. Both other cases that involve a concurrent tibial tuberosity fracture with a triplane extension were sustained following a footballing injury. We therefore propose that forced knee flexion alongside a rotational component, common to football, may promote this rare fracture pattern. It is hoped that this case can be used to shed light on a possible mechanism and to guide future management.

Osteochondritis dissecans.

Osteochondritis dissecans is a condition characterised by acquired pathological subchondral bone lesions and its incidence is unknown. It has a multifactorial aetiology, with a combination of genetic and acquired risk factors. It commonly presents in adolescents and young adults. Patients have variable presentations, including trauma, insidious onset and pain exacerbated by exercise. The joints primarily affected are the knee, ankle and elbow joint. Early identification is key to treatment and to prevent future osteoarthritis of the joint. This article gives an overview of the presentation, assessment and management of the juvenile form of osteochondritis dissecans.

Protocolised MRI as an adjunct to CT in the diagnosis of femoral neck fracture in high energy ipsilateral femoral shaft fractures - A break-even analysis.

BACKGROUND: In high-energy femoral shaft fractures (FSFs), ipsilateral femoral neck fractures (FNFs) can be missed by conventional trauma computed topography (CT) imaging, resulting in increased treatment costs and patient complications. Preliminary evidence suggests that a rapid, limited-sequence pelvis and hip magnetic resonance imaging (MRI) protocol can identify these occult fractures and be feasibly implemented in the trauma setting. This study aims to establish the economic break-even point for implementing such an MRI protocol in all high-energy FSFs. METHODS: We used an adapted break-even economic tool to determine whether the costs of a targeted MRI protocol can be offset by cost-savings achieved through prevention of missed fractures (thus avoiding prolonged admission and re-operation). Sensitivity analyses were performed to demonstrate reliability of the economic modelling across a range of assumptions. RESULTS: Assuming a baseline of FNFs missed on CT of 12%, an MRI cost of £129 and cost of treating each missed FNF of £2457.5, the equation yielded a break-even rate of 7% and absolute risk reduction (ARR) of 5%, indicating that for every 100 FSFs, MRI would need to diagnose 5 of the 12 missed FNF to be economically viable (number needed to treat (NNT)=20). Economic viability was maintained even at double the cost of MRI, while increasing the cost of treating each complication served to reduce the ARR further, increasing cost-savings. CONCLUSION: A rapid, limited-sequence MRI protocol to exclude occult ipsilateral FNFs in all high-energy FSFs appears to be economically justified measure. Further research exploring the feasibility of such a protocol, as well as the role of intra-operative fluoroscopy in this context, is required.

Pediatric electric scooter injuries in the UK: Case series and review of literature.

OBJECTIVE: Electric scooters are being used worldwide as a new means of transport and e-scooter shared schemes are currently being piloted in cities across the UK. At present, there is no data published looking at pediatric e-scooter injuries within the UK. We aim to assess if e-scooters pose a risk to children and the patterns and severity of orthopedic injuries related to their use. METHODS: We performed a retrospective review of all orthopedic pediatric referrals relating to e-scooter use from January 1 to December 31, 2020 at two hospitals, including one pediatric Major Trauma Center in central London. Data including patient demographics, mechanism of injury, diagnosis, and treatment were collected. RESULTS: Ten patients were identified in this series, of which 5 required orthopedic surgery. Four patients required admission to hospital from the emergency department. The median age was 15 (range 13-17 years) and all were male. All e-scooters were privately owned and all sustained a fall whilst riding the e-scooter. No patient was wearing a helmet. Six sustained lower limb injuries and four upper limb injuries. Two patients were trauma called and one patient sustained an open fracture. There were no mortalities at 30 days. CONCLUSION: E-scooters pose a significant risk to children and can be associated with severe musculoskeletal injury. The risk they pose to the pediatric population should not be overlooked and these findings may inform public policy regarding the restriction of electric scooter use in children.

Foot and ankle injuries related to the use of E-scooters - A case series and a review of literature.

INTRODUCTION: As E-scooter use is increasing with the introduction of urban rental schemes in the United Kingdom, associated foot and ankle injuries will become more prevalent. The aim of this study is to assess the injury pattern and injury severity of foot and ankle trauma associated with E-scooter use. METHODS: A retrospective case analysis of all E-scooter foot and ankle injuries presenting to three London hospitals between 1st January and 31st December 2020 was conducted. Data including demographics, mechanism and location of injury sustained, management, duration of hospital stay and mortality were collected. RESULTS: 20 patients were identified with a total of 27 foot and ankle fractures. Eight patients had fracture dislocations, four sustained open injuries and 45% (9/20) of patients required surgical treatment. Those travelling over 15.5 mph were significantly more likely to require operative intervention (70%) than those travelling below 15.5 mph (20%) (P < 0.033) and were more likely to have an open fracture (40% compared to 0%) (P < 0.0886), however the latter was not of statistical significance. 85% (17/20) of rider's injuries involved the foot and/or ankle only. There were no mortalities at 30 days. CONCLUSIONS: E-scooter use can cause serious foot and ankle injuries. Robust guidelines and legislation restricting top speeds and enforcing the wearing of protective clothing could be implemented. This may protect the E-scooter user from significant foot and ankle injury.

Impact of the National Lockdown Due to the COVID-19 Pandemic On Upper Limb Trauma Workload in Central London: A Multi-Centre Longitudinal Observational Study During Implementation and Ease of National Lockdown.

Background: This study assessed the impact of the COVID-19 pandemic on acute upper limb referrals and operative case-mix at the beginning and ease of British lockdown. Methods: A longitudinal multicentre observational cohort study was conducted for both upper limb trauma referrals and operative case-mix over a 12-week period (6 weeks from the beginning and 6 weeks from the ease of the national lockdown). Statistical analysis included median (± median absolute deviation), risk and odds ratios, and Fisher's exact test to calculate the statistical significance, set at p ≤ 0.05. Results: There was a 158% (n = 456 vs. 177) increase in upper limb referrals and 133% (n = 91 vs. 39) increase in the operative trauma caseload at the ease of lockdown compared with its commencement. An increase in sporting injuries was demonstrated (p=0.02), specifically cycling (p=0.004, OR=2.58). A significant increase in COVID-19 testing was demonstrated during the ease of lockdown (p=0.0001) with more patients having their management changed during the beginning of the pandemic (9.6% vs. 0.7%, p=0.0001). Of these patients, 47% went on to have delayed surgery within 6 months. No patients who underwent surgery tested positive for COVID-19 infection within 14 days post-operatively and no mortalities were recorded at 30 days. Conclusion: The ease of lockdown has seen upper limb referrals and operations more than double compared to early lockdown. With no patients testing positive for COVID-19 within 14 days of the procedure, this demonstrates that having upper limb surgery during the current pandemic is safe.

Impact of COVID-19 on acute trauma and orthopaedic referrals and surgery in the UK during the first wave of the pandemic: a multicentre observational study from the COVid Emergency-Related Trauma and orthopaedics (COVERT) Collaborative.

OBJECTIVE: This is the first British multicentre study observing the impact of the COVID-19 pandemic on orthopaedic trauma with respect to referrals, operative caseload and mortality during its peak. DESIGN: A longitudinal, multicentre, retrospective, observational, cohort study was conducted during the peak 6 weeks of the first wave from 17 March 2020 compared with the same period in 2019. SETTING: Hospitals from six major urban cities were recruited around the UK, including London. PARTICIPANTS: A total of 4840 clinical encounters were initially recorded. 4668 clinical encounters were analysed post-exclusion. PRIMARY AND SECONDARY OUTCOME MEASURES: Primary outcomes included the number of acute trauma referrals and those undergoing operative intervention, mortality rates and the proportion of patients contracting COVID-19. Secondary outcomes consisted of the mechanism of injury, type of operative intervention and proportion of aerosolising-generating anaesthesia used. RESULTS: During the COVID-19 period, there was a 34% reduction in acute orthopaedic trauma referrals compared with 2019 (1792 down to 1183 referrals), and a 29.5% reduction in surgical interventions (993 down to 700 operations). The mortality rate was more than doubled for both risk and odds ratios during the COVID-19 period for all referrals (1.3% vs 3.8%, p=0.0005) and for those undergoing operative intervention (2.2% vs 4.9%, p=0.004). Moreover, mortality due to COVID-19-related complications (vs non-COVID-19 causes) had greater odds by a factor of at least 20 times. For the operative cohort during COVID-19, there was an increase in odds of aerosolising-generating anaesthesia (including those with superimposed regional blocks) by three-quarters, as well as doubled odds of a consultant acting as the primary surgeon. CONCLUSION: Although there was a reduction of acute trauma referrals and those undergoing operative intervention, the mortality rate still more than doubled in odds during the peak of the pandemic compared with the same time interval 1 year ago.

Impact of COVID-19 pandemic on hip fractures: the central London experience COVID-related urgent geriatric hip trauma (COUGH) study COVERT ( COVid Emergency-Related Trauma and orthopaedics) collaborative.

INTRODUCTION: COVID-19 has been recognized as the unprecedented global health crisis in modern times. The purpose of this study was to assess the impact of COVID-19 on treatment of neck of femur fractures (NOFF) against the current guidelines and meeting best practice key performance indicators (KPIs) according to the National Hip Fracture Database (NHFD) in two large central London hospitals. MATERIALS AND METHODS: A multi-center, longitudinal, retrospective, observational study of NOFF patients was performed for the first 'golden' month following the lockdown measures introduced in mid-March 2020. This was compared to the same time period in 2019. RESULTS: A total of 78 cases were observed. NOFFs accounted for 11% more of all acute referrals during the COVID era. There were fewer overall breaches in KPIs in time to theatre in 2020 and also for those awaiting an orthogeriatric review. Time to discharge from the trust during the pandemic was improved by 54% (p < 0.00001) but patients were 51% less likely to return to their usual residence (p = 0.007). The odds ratio was significantly higher for consultant surgeon-led operations and consultant orthogeriatric-led review in the post-COVID era. There was no significant difference in using aerosol-generating anaesthetic procedures or immortality rates between both years. CONCLUSION: The impact of COVID-19 pandemic has not adversely affected the KPIs for the treatment of NOFF patients with significant improvement in numerous care domains. These findings may represent the efforts to ensure that these vulnerable patients are treated promptly to minimize their risks from the coronavirus.

Functional outcomes, complications and revision rate of hip arthroplasty in patients with sequelae of slipped capital femoral epiphysis: a systematic review.

BACKGROUND: Slipped capital femoral epiphysis (SCFE) results in alterations to femoral head anatomy, predisposing patients to degenerative hip disease at a young age. Total hip arthroplasty (THA) is performed to relieve symptoms and improve function. However, it can be associated with a variable outcomes and little evidence exists on the functional outcomes, complications and revision rate following such procedures. PURPOSE: The aim of this systematic review is to determine the safety and effectiveness of performing hip arthroplasty in patients with degenerative hips secondary to SCFE. METHODOLOGY: A systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A literature review was conducted of MEDLINE and Embase. Both single-arm and comparative studies were included. The outcomes of interest were functional scores, post-operative complications and revision rate. RESULTS: Six studies fit the inclusion criteria. Of these, five were retrospective single-arm studies and one was a retrospective comparative study based on registry data.All studies reported significant improvement in hip function and quality of life after THA. An overall revision rate of 11.9% was reported, occurring at a mean of 6.5 years (0.75-18.7 years).THA in patients after SCFE leads to improved functional outcomes that are comparable to patients receiving THA for osteoarthritis. The revision rate appears to be higher than is reported in patients undergoing THA for osteoarthritis at mid-term follow-up. Further prospective comparative studies are needed to evaluate the efficacy of the treatment in more detail. Cite this article: EFORT Open Rev 2021;6:539-544. DOI: 10.1302/2058-5241.6.200038.

Paediatric anterior cruciate ligament injury.

The number of paediatric anterior cruciate ligament injuries is rising at a greater rate than in the adult population, as a result of the increased participation of children and adolescents in sports. This review explores the key presentations, diagnostic and management plans, and prevention methods associated with paediatric anterior cruciate ligament injuries. This injury presents as an acute pop and effusion, with limitations in gait, and can be extremely debilitating. Clinical examination and magnetic resonance imaging are used to diagnose the injury. The pivot shift and Lachman test remain the most valid exams when suspecting an anterior cruciate ligament tear. Management of the injury can be surgical or non-surgical depending on the severity of the tear and associated injuries. The surgical approach chosen is determined by the patient's Tanner classification, considering potential damage to the physes of the bone. Management plans should include rehabilitation consisting of strength, proprioception and neuromuscular training, to maximise the patient's recovery. Injury prevention programmes, consisting of strength training and neuromuscular training, should be followed by young athletes to reduce anterior cruciate ligament injuries. Compliance and earlier implementation coupled with an understanding of the biomechanics of anterior cruciate ligament injuries and verbal feedback maximise the benefit of neuromuscular training.

Outcomes of total hip arthroplasty in haemodialysis and renal transplant patients: systematic review.

BACKGROUND: Chronic renal failure is increasing in prevalence and reported to have deleterious effects on the outcome of total hip arthroplasty (THA). AIM: To investigate the clinical and functional outcomes of THA in patients receiving haemodialysis or who have previously undergone renal transplantation. METHODS: Systematic review of the literature using bibliographic databases up to July 2018 to determine the functional outcome, complications and revision rates of THA in patients receiving haemodialysis for end-stage renal failure and those with a previous renal transplant. RESULTS: 25 studies were identified with a total of 797 THAs. 166 patients (20.8%) were receiving haemodialysis and 631 patients (79.2%) had undergone transplantation. All studies reported a marked improvement in hip function following THA. There were 27 failures (15.7% revision rate) in the haemodialysis group and 101 failures (16.0% revision rate) in the transplant group. The revision rate for cemented implants was higher in haemodialysis versus transplant patients (23% vs. 15%), with the converse being true for uncemented implants (3.8% vs. 6.9%). The deep infection rate was higher in the haemodialysis group (10.8% vs. 2.1%). CONCLUSIONS: Patients receiving haemodialysis or with a history of renal transplantation can expect good functional outcome following THA. However, the revision rate and deep infection rate are higher than would be expected in patients receiving THA for primary OA. Aseptic loosening is the most common reason for revision. Uncemented implants appear to be associated with lower failure rates both in haemodialysis patients and those who have had a transplant.

Impact of the COVID-19 pandemic on paediatric orthopaedic trauma workload in central London: a multi-centre longitudinal observational study over the "golden weeks".

Background and purpose - The COVID-19 pandemic has been recognised as an unprecedented global health crisis. This study assesses the impact on a large acute paediatric hospital service in London, evaluating the trends in the acute paediatric orthopaedic trauma referral caseload and operative casemix before (2019) and during (2020) COVID-19 lockdown. Patients and methods - A longitudinal retrospective observational prevalence study of both acute paediatric orthopaedic trauma referrals and operative caseload was performed for the first 6 "golden weeks" of lockdown. These data were compared with the same period in 2019. Statistical analyses included median (± median absolute deviation), risk and odds ratios as well as Fisher's exact test to calculate the statistical significance, set at p ≤ 0.05. Results - Acute paediatric trauma referrals in 2020 were reduced by two-thirds compared with 2019 (n = 302 vs. 97) with a halving risk (RR 0.55) and odds ratios (OR 0.43) of sporting-related mechanism of injuries (p = 0.002). There was a greater use of outpatient telemedicine in the COVID-19 period with more Virtual Fracture Clinic use (OR 97, RR 84, p < 0.001), and fewer patients being seen for consultation and followed up face to face (OR 0.55, RR 0.05, p < 0.001). Interpretation - The impact of the COVID-19 pandemic has led to a decline in the number of acute paediatric trauma referrals, admissions, and operations during the COVID period. There has also been a significant change in the patient pathway with more being reviewed via the means of telemedicine to reduce the risk of COVID-19 transmission and exposure. More work is required to observe for similar trends nationwide and globally as the pandemic has permanently affected the entire healthcare infrastructure.

Developmental dysplasia of the hip.

Developmental dysplasia of the hip encompasses a range of hip abnormalities in which the femoral head and acetabulum fail to develop and articulate anatomically. Developmental dysplasia of the hip is a clinically important condition, with a prevalence of 1-2/1000 in unscreened populations and 5-30/1000 in clinically screened populations. The pathology is incongruence between the femoral head and the acetabulum, which can be caused by an abnormally shaped femoral head, acetabulum, or both. This results in a spectrum of different hip abnormalities. The precise aetiology behind developmental dysplasia of the hip is unclear, but there are a number of established risk factors. In the UK, universal clinical examination of newborns and 6-8-week-old babies is performed under the national UK newborn screening programme for developmental dysplasia of the hip (part of the Newborn and Infant Physical Examination). The physical examination of the newborn hip involves initial inspection of the infant for any of the clinical features of developmental dysplasia of the hip, followed by hip stability tests (Barlow's and Ortolani's tests). Hip ultrasound is the gold standard diagnostic and monitoring tool for developmental dysplasia of the hip in newborns and infants under 6 months of age, or until ossification of the femoral head. Some mild cases of developmental dysplasia of the hip (and the immature hip) resolve without requiring intervention; however, there are a number of treatments, both non-operative and operative, that may be used at various stages of this condition.

Impact of the COVID-19 pandemic on orthopedic trauma workload in a London level 1 trauma center: the "golden month".

Background and purpose - The COVID-19 pandemic has been recognized as an unprecedented global health crisis. This is the first observational study to evaluate its impact on the orthopedic workload in a London level 1 trauma center (i.e., a major trauma center [MTC]) before (2019) and during (2020) the "golden month" post-COVID-19 lockdown.Patients and methods - We performed a longitudinal observational prevalence study of both acute orthopedic trauma referrals, operative and anesthetic casemix for the first "golden" month from March 17, 2020. We compared the data with the same period in 2019. Statistical analyses included median (median absolute deviation), risk and odds ratios, as well as Fisher's exact test to calculate the statistical significance, set at p ≤ 0.05.Results - Acute trauma referrals in the post-COVID period were almost halved compared with 2019, with similar distribution between pediatric and adult patients, requiring a significant 19% more admissions (RR 1.3, OR 2.6, p = 0.003). Hip fractures and polytrauma cases accounted for an additional 11% of the modal number of injuries in 2020, but with 19% reduction in isolated limb injuries that were modal in 2019. Total operative cases fell by a third during the COVID-19 outbreak. There was a decrease of 14% (RR 0.85, OR 0.20, p = 0.006) in aerosol-generating anesthetic techniques used.Interpretation - The impact of the COVID-19 pandemic has led to a decline in the number of acute trauma referrals, admissions (but increased risk and odds ratio), operations, and aerosolizing anesthetic procedures since implementing social distancing and lockdown measures during the "golden month."

Surgical treatment of an ischial tuberosity avulsion fracture with delayed presentation.

Avulsion fractures of the ischial tuberosity usually occur in skeletally immature athletes following eccentric contraction of the hamstrings. When displaced fractures are left untreated, subsequent non-union and proximal hamstring fibrosis may lead to chronic pain and reduced activity. However, the indications for and outcomes of operative fixation when presentation is delayed remain unclear. We report the case of a 14 year old male athlete who presented to our institution 6 weeks after sustaining a displaced ischial tuberosity avulsion fracture. He underwent open reduction and internal fixation using a cannulated screw system via a posterior approach, with excellent results at 18 months follow-up. We report our surgical findings in detail as well as a novel method for post-operatively assessing functional screw head prominence-the seated radiograph.

Use of three-dimensional printing in preoperative planning in orthopaedic trauma surgery: A systematic review and meta-analysis.

BACKGROUND: With the increasing complexity of surgical interventions performed in orthopaedic trauma surgery and the improving technologies used in three-dimensional (3D) printing, there has been an increased interest in the concept. It has been shown that 3D models allow surgeons to better visualise anatomy, aid in planning and performing complex surgery. It is however not clear how best to utilise the technique and whether this results in better outcomes. AIM: To evaluate the effect of 3D printing used in pre-operative planning in orthopaedic trauma surgery on clinical outcomes. METHODS: We performed a comprehensive systematic review of the literature and a meta-analysis. Medline, Ovid and Embase were searched from inception to February 8, 2018. Randomised controlled trials, case-control studies, cohort studies and case series of five patients or more were included across any area of orthopaedic trauma. The primary outcomes were operation time, intra-operative blood loss and fluoroscopy used. RESULTS: Seventeen studies (922 patients) met our inclusion criteria and were reviewed. The use of 3D printing across all specialties in orthopaedic trauma surgery demonstrated an overall reduction in operation time of 19.85% [95% confidence intervals (CI): (-22.99, -16.71)], intra-operative blood loss of 25.73% [95%CI: (-31.07, -20.40)], and number of times fluoroscopy was used by 23.80% [95%CI: (-38.49, -9.10)]. CONCLUSION: Our results suggest that the use of 3D printing in pre-operative planning in orthopaedic trauma reduces operative time, intraoperative blood loss and the number of times fluoroscopy is used.

Anatomic, diagnostic and management challenges in paediatric pelvic injuries: a review.

Pelvic injuries have an incidence of 1: 100 000 children per year in the UK, of which 10% are unstable. A literature review was conducted. Clinical examination alone in a stable patient precludes the need for imaging. Imaging options in the acute pelvic injury are critically reviewed. Where appropriate Judet views or limited exposure computed tomography scan remain of diagnostic benefit. Displacement greater than 1 cm should be reduced and held with an appropriate method. Closed reduction and external fixation for rotationally unstable fractures, and closed or open reduction with internal fixation of two columns should be considered for rotationally and vertically unstable fractures.

Paediatric supracondylar humerus fractures.

This article gives a practical guide to the management of supracondylar fractures of the humerus in paediatric patients, from initial presentation to definitive treatment. It reviews the optimal management of this common and serious injury based on current evidence including the British Orthopaedic Association Standards for Trauma (BOAST) 11 standard.

Systematic review of the outcome of total hip arthroplasty in patients with sequelae of Legg-Calvé-Perthes disease.

BACKGROUND: Total hip arthroplasty (THA) in patients with sequelae of Legg-Calvé-Perthes disease (LCP) is technically demanding because of the disease related deformities occuring in the proximal femur and/or the multiplanar deformities secondary to corrective osteotomies in childhood. Little is known about the long-term outcome of the procedure in this challenging group of patients. METHODS: We carried out a systematic review of the literature to determine the functional outcome, complications and revision rate of THA in patients with sequelae of LCP disease. Six out of 148 potential studies involving 245 hips met the inclusion criteria. The mean age was 45.7 years (19-74) and follow-up was 8.4 years (2-21). RESULTS: There were 221 cementless THAs (90%), 22 hybrid THAs (9%) and 2 cemented THAs (1%). The femoral components used included 187 standard stems (76%), 43 modular stems (18%) and 15 custom-made stems (6%). The modular implants used were reamed S-Rom stems. All studies reported a significant improvement in hip function following THA. There were 16 revision THAs (7%) occurring at a mean of 7.5 years (0.4-10.3). Complications included intra-operative fracture (11%, n = 27), aseptic loosening (5%, n = 13), sciatic nerve palsy (3%, n = 7) and heterotopic ossification (2%, n = 4). All intra-operative fractures occurred when standard femoral stems were used. The average limb lengthening in the patients with a post-operative sciatic nerve injury was 1.9 cm. All patients with this complication had a history of previous hip surgery. CONCLUSIONS: THA in patients with LCP disease results in similar functional outcome compared to patients with primary osteoarthritis; however, the revision rate at mid-term follow-up is slightly increased. Reamed modular (S-Rom) and custom femoral implants appear to be associated with a decreased risk of intra-operative fracture. Care should be taken when addressing leg length discrepancy in this group of patients due to the increased risk of sciatic nerve palsy, especially in patients with prior surgical procedures.