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Purpose: Little is known about the outcomes that are most important to prosthesis users and funders. A Prosthetic Interventions Core Outcome Set (PI-COS) will help researchers and practitioners measure outcomes that are the most important to prosthesis users and funders. Materials and methods: Prosthesis users and funders rated the importance of 121 International Classification of Functioning, Disability, and Health (ICF) second-level categories using a two-round Delphi survey. A Consensus Meeting using the nominal group technique resolved rating differences between groups. The ICF second-level categories were ranked according to importance and a K-Means Cluster Analysis helped establish the PI-COS. Results: 65 users and 8 funders completed the Delphi surveys, followed by a Consensus Meeting. 26 ICF second-level categories were considered important to prosthesis users and funders and a PI-COS of 14 ICF second-level categories drawn predominantly from five ICF chapters was established: Sensory Functions and Pain (b2), Neuromusculoskeletal and Movement-related Functions (b7), General Tasks and Demands (d2), Mobility (d4), and Products and Technology (e1). Conclusions: The PI-COS describes the outcomes that are most important to prosthesis users and funders. The PI-COS can help focus on the most important outcome measures in clinical practice and research, including future prosthetic health economic evaluations. [ABSTRACT FROM AUTHOR]

Purpose: To explore barriers and enablers to community walking perceived by people with lower limb amputation. Materials and methods: Three focus groups (n = 14 participants), using purposive sampling, were conducted with people with lower limb amputation who used a prosthesis to walk in the community. Three investigators analyzed transcripts using thematic content analysis. Results: Themes aligned with the International Classification of Functioning, Disability and Health domains. Barriers related to body function and structure included prosthetic function, residual limb integrity, phantom limb pain and other medical issues, with optimal prosthetic function and adequate fitness identified as enablers. Personal barriers included challenges adjusting to change, whereas personal enablers included being able to adjust to change, having a positive attitude, goal setting and a purpose for community walking. Environmental barriers included physical (e.g., terrain, crowds, climate) and social (e.g., unwanted attention and finances). Environmental enablers included aids, transport, preparation, social support and finances. Community walking was essential to participation in work, leisure, social activities and family roles. Conclusion: Walking in the community for people with a lower limb amputation presents many barriers, but enablers have also been identified. Targeted assessments and interventions, and appropriate environmental planning may assist in minimizing barriers to community walking. Although rehabilitation for people with lower limb amputation should continue to optimise body function and structure (such as strength, fitness, pain and prosthetic function) to help prepare individuals for walking in the community, personal and environmental factors should also be addressed. Optimising an individual's personal enablers may facilitate community walking; this may include strategies to assist with adjusting to change, setting goals, instilling a positive attitude towards walking, and seeing a purpose for walking in the community. Enhancing environmental (physical and social) enablers and minimising environmental barriers to walking in the community may be possible through environmental planning (e.g. infrastructure such as lifts), social awareness and education. [ABSTRACT FROM AUTHOR]

Background: In this article, an overview and comparison of the most commonly used cemented hip stems, grouped into different stem types and cement mantle thickness, is given to see which combination performs well., Methodology: Revision rates of cemented stem types were categorized from the Endoprosthesis Register-Germany, and 3‑ and 5‑year revision rates were reported and analyzed. For the research, the focus was on the Exeter, C‑Stem, MS-30, Excia, Bicontact, Charnley, Müller straight stem, Twinsys, Corail, Avenir, Quadra, and the Lubinus SP II stems. An important aspect was which stem is preferred to be implanted and which cementing technique is used with regard to the planned cement mantle thickness. In order to identify a trend in cemented hip arthroplasty, data from the Danish, Swedish, Norwegian, Swiss, New Zealand, English and Australian arthroplasty registers were also compared., Results and Conclusion: Most countries use cemented prostheses according to the taper slip principle (Exeter, MS30, C‑Stem etc) or the composite beam (Charnley, Excia, Bicontact), which are implanted with a cement mantle thickness of 2-4 mm. However, a trend has emerged in Germany and Switzerland towards the line-to-line technique, with a planned cement mantle thickness of 1 mm (Twinsys, Corail, Avenir, Quadra), following the principle of the Müller straight stem prosthesis and the Kerboul-Charnley prosthesis, even though these are postulated to be "French paradoxes" in themselves. In the EPRD 5‑year results, the newer line-to-line prostheses seem to perform slightly worse. The best results are achieved by the "MS 30" in Germany and the "Exeter" in England. These are polished straight stems with centralizer and subsidence space at the apex with a 2-4 mm cement mantle in good cementing technique., (© 2023. The Author(s), under exclusive licence to Springer Medizin Verlag GmbH, ein Teil von Springer Nature.)

Background: This study determined the contributing factors of hospital sector (private versus public) variation in revision rates after elective total hip replacement (THR) for hip fracture, and elective total knee replacement (TKR). Methods: Using data from a large national arthroplasty registry, funnel plots for hospitals were generated, displaying the proportion of revised primary procedures. The proportion of outliers for each distribution was defined as the proportion outside the upper 99.7% confidence limit. Survival analyses determined differences between hospital sector revision rates separately for implants with the lowest revision rate, and for all other implants. Multivariate Cox regression determined the role of hospital sector in revision, adjusting for possible confounders. Results: For THR performed for osteoarthritis, 17.4% of private and 4.4% of public hospitals were outliers. For TKR performed for osteoarthritis, 19.6% of private and 10.0% of public hospitals were outliers. For THR for fractured neck of femur, 8.1% of private and 0.0% of public hospitals were outliers. Adjusted and unadjusted Kaplan–Meier analyses showed higher THR revision rates in private hospitals for osteoarthritis and fractured neck of femur, but no difference when restricted to the 10 prostheses with the lowest revision rate. The Kaplan–Meier analysis of TKR showed higher revision rates for private hospitals, with the association reversing when restricted to prostheses with the lowest revision rate. Conclusions: Considerable variation was seen in the revision rate after THR and TKR between hospital sectors in Australia. The variation was largely due to differences in prosthesis selection. [ABSTRACT FROM AUTHOR]

Objective. To examine personal and social demographics, and rehabilitation discharge outcomes of dysvascular and non-vascular lower limb amputees. Methods. In total, 425 lower limb amputation inpatient rehabilitation admissions (335 individuals) from 2005 to 2011 were examined. Admission and discharge descriptive statistics (frequency, percentages) were calculated and compared by aetiology. Results. Participants were male (74%), aged 65 years (s.d. 14), born in Australia (72%), had predominantly dysvascular aetiology (80%) and a median length of stay 48 days (interquartile range (IQR): 25-76). Following amputation, 56% received prostheses for mobility, 21% (n = 89) changed residence and 28% (n = 116) required community services. Dysvascular amputees were older (mean 67 years, s.d. 12 vs 54 years, s.d. 16; P< 0.001) and recorded lower functional independence measure -- motor scores at admission (z = 3.61, P<0.001) and discharge (z =4.52, P<0.001). More nonvascular amputees worked before amputation (43% vs 11%; P< 0.001), were prescribed a prosthesis by discharge (73% vs 52%; P< 0.001) and had a shorter length of stay (7 days, 95% confidence interval: -3 to 17), although this was not statistically significant. Conclusions. Differences exist in social and demographic outcomes between dysvascular and non-vascular lower limb amputees. What is known about the topic? Lower limb amputation occurs due to various aetiologies. What does this paper add? Lower limb amputee rehabilitation over 7 years was investigated, comprising 425 admissions, 80% due to dysvascular aetiology. Personal and social demographics, and discharge outcomes are compared by aetiology. What are the implications for practitioners? Demographic and discharge outcome differences exist between dysvascular and non-vascular lower limb amputees. Twenty-one percent were required to change residence and 28% required additional social supports. Discharge planning should begin as soon as possible to limit time spent waiting for new accommodation or major modifications for current homes. Lower limb amputees are not homogeneous, so care should be taken if extrapolating from combined amputee aetiologies or from one aetiology to another. [ABSTRACT FROM AUTHOR]

Anthropological discussion of individuality, as a component of masculinity, has tended to focus on either the performance and championing of autonomy in the West (e.g., Kapferer) or the manner in which people in non-Western contexts become explicitly manifest through relationships with others (e.g., Strathern). In this paper, I consider an atypical example "of masculine identity by describing intimate interpersonal relationships between Australian commercial shark boat skippers and their young deckhands. As in other Western fisheries (e.g., Icelandic), economic success and physical safety are promoted through synergism among fishers. In the Australian case, however, the degree of corporeal cooperation is so extreme that deckhands resemble living prostheses of their skipper, embodying their peripheral socio-productive status. I consider this bond in the context of the Australian ethos of masculinity, in which displays of "individuality" are key. However, for young deckhands, their prosthetic role can compromise their passage into manhood. [ABSTRACT FROM AUTHOR]

Background: Data assessing femoral stems may be influenced by grouping together matt and polished stems, despite their differing reported survivorship. The aim of this study is to assess the difference in revision rates between commonly used cemented and cementless stems when polished tapered stems are assessed independently of matt stems., Methods: Australian Orthopaedic Association National Joint Replacement Registry data from 1999 to 2019 were used to assess difference in revision rates between the 5 most commonly implanted femoral cemented and cementless stems for osteoarthritis. Cemented matt femoral stems, stems using line-to-line cementing techniques and procedures using non-cross-linked polyethylene, large head (>32 mm) metal-on-metal bearing surfaces or exchangeable necks were excluded. Cumulative percent revision was used to help compare survivorship between stems., Results: There were 201,889 total hip replacements meeting the inclusion criteria, of which 50.0% were cemented and 50.0% cementless. Cemented stems had a lower rate of revision at all time points compared to cementless stems. This was most significant during the first 2 weeks (hazard ratio 0.48, 95% confidence interval 0.40-0.58, P < .001) compared to 2 weeks postoperatively and onwards (hazard ratio 0.85, 95% confidence interval 0.81-0.90, P < .001). A subanalysis of head size, bearing type, and surgeon volume further supported the use of a cemented stem., Conclusion: Commonly used cemented polished tapered stems have a lower revision rate when compared to commonly used cementless prostheses, and are recommended in all age groups for both low-volume and high-volume surgeons especially when head size 32 mm or smaller is used., (Copyright © 2021 Elsevier Inc. All rights reserved.)

Background: In order to reduce the incidence of total hip joint replacement revision for wear, multiple advanced materials and alloys targeting hip replacement tribology have been introduced. Ion implantation of chromium-cobalt heads is thought to reduce wear due to increased surface hardness and lower friction. These advances in technology result in additional manufacturing costs. However, it is unclear whether these attributes result in a decreased rate of revision for wear and when used with modern highly crosslinked polyethylene (XLPE). The aim of this study is to compare the survivorship of stainless steel and ion-implanted chromium-cobalt femoral heads in order to determine whether ion implantation has a lower risk of revision., Methods: Data from the Australian Orthopedic Association National Joint Replacement Registry included all stainless steel and low-friction ion-treated (LFIT) femoral heads used in conjunction with a primary Exeter/Trident hip replacement combination and XLPE liners performed for osteoarthritis. Kaplan-Meier estimates of survivorship were used to describe the time to first revision. Hazard ratios (HRs) from Cox proportional hazard models, with adjustment for age and gender, were used to compare revision rates between the 2 groups., Results: There were 40,468 total hip replacements that met the inclusion criteria. Stainless steel heads had a lower revision rate compared to LFIT chromium-cobalt heads (HR 0.87, 95% confidence interval 0.76-1.00, P = .048). The difference in the rate of revision was even greater when 32-mm heads were used (HR 0.72, 95% confidence interval 0.58-0.89, P = .002). There was no difference in revision for loosening between head alloys or when stratified by age., Conclusion: Given the increased costs associated with LFIT implants and the lower rate of revision for stainless steel heads, we recommend the use of a stainless steel heads when using an Exeter/Trident hybrid hip with an XLPE liner., (Copyright © 2021 Elsevier Inc. All rights reserved.)

SUMMARY Prosthetic devices made of plastic or silicon are occasionally present in patients requiring radiotherapy (RT). The effect of RT on these devices and the potential implications of their presence on RT planning are relatively unknown. Three examples are presented in which various devices were included in RT fields. In two of the examples in vitro testing of the devices with high single doses of radiation was undertaken. Radiotherapy was given to all patients with high doses received by the devices. Minor adjustments were made to the planning techniques to reduce the doses to the devices. Neither significant complications nor any malfunctions of the devices were noted subsequently. [ABSTRACT FROM AUTHOR]