Hip

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Marilena Giannoudi Department of Cardiology, Bradford Teaching Hospitals NHS Trust, Bradford, UK
Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK

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Peter V Giannoudis Academic Department of Trauma and Orthopaedics, Floor D, Clarendon Wing, LGI, University of Leeds, Leeds, UK
NIHR Leeds Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK

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  • With an ever-ageing population, the incidence of hip fractures is increasing worldwide. Increasing age is not just associated with increasing fractures but also increasing comorbidities and polypharmacy.

  • Consequently, a large proportion of patients requiring hip fracture surgery (HFS) are also prescribed antiplatelet and anti-coagulant medication. There remains a clinical conundrum with regards to how such medications should affect surgery, namely with regards to anaesthetic options, timing of surgery, stopping and starting the medication as well as the need for reversal agents.

  • Herein, we present the up-to-date evidence on HFS management in patients taking blood-thinning agents and provide a summary of recommendations based on the existing literature.

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Mattia Loppini Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
Fondazione Livio Sciutto Onlus, Campus Savona – Università degli Studi di Genova, Savona, Italy

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Francesco Manlio Gambaro Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy

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Rob G H H Nelissen Landelijke Registratie Orthopedische Implantaten (Dutch Arthroplasty Register), ’s Hertogenbosch, The Netherlands
Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands

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Guido Grappiolo IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
Fondazione Livio Sciutto Onlus, Campus Savona – Università degli Studi di Genova, Savona, Italy

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  • The study investigated the existing guidelines on the quality and frequency of the follow-up visits after total hip replacement surgery and assessed the level of evidence of these recommendations.

  • The review process was carried out according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Additional works were retrieved by direct investigation of the available guidelines of the most important orthopedic societies and regulatory agencies.

  • The current systematic review of the literature resulted in zero original papers, four guidelines for routine follow-up and three guidelines for special cases. Concerning the quality of evidence behind them, these guidelines were not evidence based but drafted from expert consensus.

  • The most important finding of this review is the large variation of recommendations in the follow-up schedule after total hip arthroplasty and the lack of evidence-based indications. Indeed, all the above-reported guidelines are the result of a consensus among experts in the field (level of recommendation class D ‘very low’) and not based on clinical studies.

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J R W Crutsen Department of Orthopaedic Surgery, VieCuri Medical Center, Venlo, the Netherlands

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M C Koper Department of Orthopaedic Surgery, Reinier HAGA Orthopaedic Center, Zoetermeer, the Netherlands

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J Jelsma Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands

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M Heymans Zuyderland Academy, Centre of Knowledge and Information (KIC), Zuyderland Medical Centre, Sittard-Geleen, the Netherlands

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I C Heyligers Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands
School of Health Professions Education (SHE), Maastricht University, Maastricht, the Netherlands

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B Grimm Luxembourg Institute Health, Human Motion, Orthopaedics, Sports Medicine, Digital Methods (HOSD), Luxembourg, Luxembourg

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N M C Mathijssen Department of Orthopaedic Surgery, Reinier HAGA Orthopaedic Center, Zoetermeer, the Netherlands

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M G M Schotanus Department of Orthopaedic Surgery and Traumatology, Zuyderland Medical Center, Sittard-Geleen-Heerlen, the Netherlands
School of Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands

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  • Prosthetic hip-associated cobalt toxicity (PHACT) is caused by elevated blood cobalt concentrations after hip arthroplasty.

  • The aim of this study is to determine which symptoms are reported most frequently and in what type of bearing. We also try to determine the blood level of cobalt concentrations associated with toxicological symptoms.

  • A systematic review was conducted on the 10th of July according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A methodological quality assessment (risk of bias (RoB)) was performed. Primary outcomes were the reported symptoms of cobalt toxicity and the level of cobalt concentrations in blood. These levels were associated with toxicological symptoms. A total of 7645 references were found of which 67 relevant reports describing 79 patients.

  • The two most used bearings in which PHACT was described were metal-on-metal (MoM) bearings (38 cases) and revised (fractured) ceramic-on-ceramic (CoC) bearings where the former ceramic head was replaced by a metal head (32 cases).

  • Of all reported symptoms, most were seen in the neurological system, of which 24% were in the sensory system and 19.3% were in central/peripheral system, followed by the cardiovascular (22.1%) system.

  • The mean cobalt concentration for MoM-bearings was 123.7 ± 96.8 ppb and 1078.2 ± 1267.5 ppb for the revised fractured CoC-bearings.

  • We recommend not to use a metal-based articulation in the revision of a fractured CoC bearing and suggest close follow-up with yearly blood cobalt concentration controls in patients with a MoM bearing or a revised fractured CoC bearing.

  • Level of Evidence: Level V, systematic review

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Andy Craig Department of Trauma & Orthopaedics, Leeds Teaching Hospitals, Leeds, UK

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S W King Department of Trauma & Orthopaedics, Leeds Teaching Hospitals, Leeds, UK

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B H van Duren Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK

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V T Veysi Department of Trauma & Orthopaedics, Leeds Teaching Hospitals, Leeds, UK
Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK

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S Jain Department of Trauma & Orthopaedics, Leeds Teaching Hospitals, Leeds, UK
Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK

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J Palan Department of Trauma & Orthopaedics, Leeds Teaching Hospitals, Leeds, UK
Leeds Institute of Rheumatic Musculoskeletal Medicine (LIRMM), Chapel Allerton Hospital, Leeds, UK

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  • Use of articular antibiotic-eluting cement spacers during two-stage revision arthroplasty for prosthetic joint infection (PJI) is a long-established and proven adjunctive technique during first-stage surgery. Articular spacers come in many forms, either static or dynamic. The authors present an instructional review of current evidence regarding their use.

  • A total of 45 studies (for spacer use in PJI involving either hip or knee) were analysed for data regarding eradication rate, functional outcomes, mechanical complications and the impact on second-stage surgery. A large number of case series and retrospective cohort studies were retrieved, with only a small number of prospective studies (2).

  • High levels of infection eradication were commonly reported (>80%). Outcome scores were commonly reported as indicating good-to-excellent function and pain levels. Second-stage procedures were often not required when dynamic spacers were used. Static spacers were associated with more mechanical complications in both the hip and the knee. In the hip, dynamic spacers were more commonly associated with instability compared to static spacers. Consideration should be given to the use of dual-mobility or constrained definitive acetabular components in these cases at second-stage surgery.

  • The use of antibiotic-eluting polymethylmethacrylate articular spacers in two-stage revision for PJI of hip and knee arthroplasty achieves a high rate of infection eradication. Dynamic spacers may confer a variety of benefits compared to static spacers, with a similar rate of infection eradication.

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K Venkatadass Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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V Durga Prasad Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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Nasser Mohammed Mansor Al Ahmadi Alwaly Hospital, Aden, Yemen

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S Rajasekaran Department of Orthopaedics & Spine Surgery, Ganga Hospital, Coimbatore, India

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  • Acetabular dysplasia is a significant problem in the spectrum of developmental dysplasia of hip. In a younger child, positioning the femoral head into the acetabulum helps in reciprocal remodeling of the acetabulum and correction of dysplasia. In an older child, the remodeling potential is limited and often the acetabular dysplasia needs surgical intervention in the form of a pelvic osteotomy.

  • Thus, pelvic osteotomy forms an integral part of surgical management of hip dysplasia. The ultimate goal of these osteotomies is to preclude or postpone the development of osteoarthritis and add more years of life to the native hip.

  • Pelvic osteotomies play a pivotal role in normalizing hip morphology. The choice of pelvic osteotomy depends on the age of a child, the type of dysplasia and the status of the tri-radiate cartilage.

  • Several types of re-directional and reshaping pelvic osteotomies have been described in the literature to improve the stability and restore the anatomy and biomechanics of the dysplastic hip.

  • This article attempts to review the current indications for various pelvic osteotomies with a brief description of their techniques along with the outcomes and complications published thus far. Besides, the guidelines to choose the right pelvic osteotomy are also provided.

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Filippo Maria Anghilieri Residency Program in Orthopaedics and Traumatology, School of Medicine and Surgery, University of Milan, Milan, Italy

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Ilaria Morelli U.O.C. Ortopedia e Traumatologia, ASST Ovest Milanese, Nuovo Ospedale di Legnano, Legnano, Milano, Italy

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Giuseppe M Peretti IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
Department of Biomedical Sciences for Health, University of Milan, Milan, Italy

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Fabio Verdoni IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Domenico Curci IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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  • The aim of this systematic review is to assess the role of the prophylactic fixation of contralateral unaffected hip in unilateral slipped capital femoral epiphysis (SCFE) in children, focusing on the possible complications of this surgical procedure.

  • A systematic review of medical literature was conducted, according to the Preferred Reporting Items for Systematic review and Meta-Analysis (PRISMA) statement, to analyse the complications of prophylactic contralateral hip fixation in unilateral paediatric SCFE. We registered the complications reported in the included studies, scoring their severity according to the orthopaedic adaptation of Clavien–Dindo classification.

  • From 1695 studies primarily identified, 14 studies were finally included: 1 prospective cohort study, 4 retrospective case-control studies and 9 retrospective case series, with a total of 811 children diagnosed with unilateral SCFE and treated on the unaffected contralateral hip. Grade IV complications were very rare (0.37%), while the rate of grade III events was 8%. No death was recorded. The most frequent complication was unplanned further surgery (6.29%) that was an epiphyseal refixation, owing to the physiologic growth of the proximal femur, in 42 cases. Cannulated screws fixation showed to have a lower major complication rate than pinning with K-wires, 5.37% vs 17.95%.

  • The prophylactic fixation of contralateral unaffected hip in paediatric unilateral SCFE is a safe procedure. Although a benefit-cost analysis on this topic has not been published yet, considering the low rate of complications, prophylactic hip fixation is a viable option for patients presenting with unilateral SCFE, to prevent the occurrence of severe hip deformity and avoid future invasive surgeries.

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Habeeb Bishi South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Joshua B V Smith South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Vipin Asopa South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Richard E Field South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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Chao Wang South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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David H Sochart South West London Elective Orthopaedic Centre, Epsom General Hospital, Epsom, Surrey, UK

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  • There are advocates of both two-dimensional (2D) and three-dimensional (3D) templating methods for planning total hip replacement.

  • The aim of this study was to compare the accuracy of implant size prediction when using 2D and 3D templating methods for total hip arthroplasty, as well as to compare the inter- and intra-observer reliability in order to determine whether currently available methods are sufficiently reliable and reproducible.

  • Medline, EMBASE and PubMed were searched to identify studies that compared the accuracy of 2D and 3D templating for total hip replacement.

  • Results were screened using the PRISMA flowchart and included studies were assessed for their level of evidence using the Oxford CEBM criteria. Non-randomized trials were critically appraised using the MINORS tool, whilst randomized trials were assessed using the CASP RCT checklist.

  • A series of meta-analyses of the data for accuracy were also conducted.

  • Ten studies reported that 3D templating is an accurate and reliable method of templating for total hip replacement. Six studies compared 3D templating with 2D templating, all of which concluded that 3D templating was more accurate, with three finding a statistically significant difference.

  • The meta-analyses showed that 3D CT templating is the most accurate method.

  • This review supports the hypothesis that 3D templating is an accurate and reliable method of preoperative planning, which is more accurate than 2D templating for predicting implant size. However, further research is needed to ascertain the significance of this improved accuracy and whether it will yield any clinical benefit.

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Luigi Zagra Hip Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Francesco Benazzo Chirurgia Protesica ad Indirizzo Robotico, Fondazione Poliambulanza, Brescia, Italy

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Dante Dallari Reconstructive Orthopaedic Surgery and Innovative Techniques – Musculoskeletal Tissue Bank, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy

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Francesco Falez Department of Orthopaedics and Traumatology, ASL Roma 1, S. Filippo Neri Hospital, Rome, Italy

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Giuseppe Solarino Department of Basic Medical Sciences, Neuroscience and Sense Organs, Orthopaedic & Trauma Unit, School of Medicine, University of Bari Aldo Moro, AOU Consorziale ‘Policlinico’, Bari, Italy

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Rocco D’Apolito Hip Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy

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Claudio Carlo Castelli FROM, Research Foundation Papa Giovanni XXIII Hospital, Bergamo, Italy

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  • Hip, spine, and pelvis move in coordination with one another during activity, forming the lumbopelvic complex (LPC).

  • These movements are characterized by the spinopelvic parameters sacral slope, pelvic tilt, and pelvic incidence, which define a patient’s morphotype.

  • LPC kinematics may be classified by various systems, the most comprehensive of which is the Bordeaux Classification.

  • Hip–spine relationships in total hip arthroplasty (THA) may influence impingement, dislocation, and edge loading.

  • Historical ‘safe zones’ may not apply to patients with impaired spinopelvic mobility; adjustment of cup inclination and version and stem version may be necessary to achieve functional orientation and avert complications.

  • Stem design, bearing surface (including dual mobility), and head size are part of the armamentarium to treat abnormal hip–spine relationships.

  • Special attention should be directed to patients with adult spine deformity or fused spine because they are at increased risk of complications after THA.

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Nanne Kort CortoClinics, Nederweert, Netherlands

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Patrick Stirling ReSurg SA, Nyon, Switzerland

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Peter Pilot IMUKA, Roosteren, The Netherlands

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Jacobus Hendrik Müller ReSurg SA, Nyon, Switzerland

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  • Robot-assisted total hip arthroplasty (THA), in comparison to conventional THA, improves radiographic outcomes, but it remains unclear whether it alters complication rates, clinical and functional outcomes, and implant survival.

  • The purpose of this systematic overview was to summarize the findings of the most recent meta-analyses that compare clinical and surgical outcomes of robot-assisted versus conventional THA.

  • Two readers independently conducted an electronic literature search, screening and data extraction from five electronic databases. Inclusion criteria were: meta-analyses evaluating robot-assisted versus conventional THA in terms of radiographic outcomes, clinical and functional scores, and complications and revision rates. The literature search returned 67 records, of which 14 were duplicates and 49 were excluded, leaving three meta-analyses published within the past two years for data extraction and analysis.

  • The present overview of meta-analyses suggests that, compared to conventional THA (n = 3011), robot-assisted THA (n = 1813) improves component placement and reduces intraoperative complications. The overview also affirms that robot-assisted THA could extend surgery by 20 minutes, and increases risks of postoperative heterotopic ossification, dislocation, and revision. None of the meta-analyses found significant differences in clinical or functional scores between robot-assisted and conventional THA.

  • Future studies and reviews should make a clear distinction between active and semi-active robotic assistance, address technology matureness, and describe the experience of surgeons with robotic assistance.

Cite this article: EFORT Open Rev 2021;6:1157-1165. DOI: 10.1302/2058-5241.6.200121

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Alexis Nogier Service de Chirurgie Orthopédique, Clinique Trenel, Sainte-Colombe, France
Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France

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Idriss Tourabaly Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France

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Sonia Ramos-Pascual ReSurg SA, Nyon, Switzerland

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Jacobus H. Müller ReSurg SA, Nyon, Switzerland

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Mo Saffarini ReSurg SA, Nyon, Switzerland

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Cyril Courtin Service de Chirurgie Orthopédique, Clinique Trenel, Sainte-Colombe, France

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  • To report clinical and radiographic outcomes of primary THA using three-dimensional (3D) image-based custom stems.

  • This systematic review was performed according to PRISMA guidelines and registered with PROSPERO (CRD42020216079). A search was conducted using MEDLINE, Embase and Cochrane. Clinical studies were included if they reported clinical or radiographic outcomes of primary THA using 3D image-based custom stems. Studies were excluded if specific to patients with major hip anatomical deformities, or if not written in English.

  • Fourteen studies were eligible for inclusion (n = 1936 hips). There was considerable heterogeneity in terms of manufacturer, proximal geometry, coating and length of custom stems. Revision rates ranged from 0% to 1% in the short-term, 0% to 20% in the mid-term, and 4% to 10% in the long-term, while complication rates ranged from 3% in the short-term, 0% to 11% in the mid-term and 0% to 4% in the long-term. Post-operative Harris hip scores ranged from 95 to 96 in the short-term, 80 to 99 in the mid-term, and 87 to 94 in the long-term. Radiographic outcomes were reported in eleven studies, although none reported 3D implant sizing or positioning, nor compared planned and postoperative hip architecture.

  • Primary THA using 3D image-based custom stems in unselected patients provides limited but promising clinical and radiographic outcomes. Despite excellent survival, the evidence available in the literature remains insufficient to recommend their routine use. Future studies should specify proximal geometry, length, fixation, material and coating, as well as management of femoral offset and anteversion. The authors propose a classification system to help distinguish between custom stem designs based primarily on their proximal geometry and length.

Cite this article: EFORT Open Rev 2021;6:1166-1180. DOI: 10.1302/2058-5241.6.210053

Open access