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22. Fracture Dislocations About the Knee

Author

Rubinger, Luc, Gazendam, Aaron, Ekhtiari, Seper, Kay, Jeffrey, Johal, Herman, de SA, Darren, Nakamura, Norimasa, editor, Marx, Robert G., editor, Musahl, Volker, editor, Getgood, Alan, editor, Sherman, Seth L., editor, and Verdonk, Peter, editor

Published
2022
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26. Load Management Among Professional Hockey Goalies: A Retrospective Cohort Study.

Author

Ekhtiari, Seper, Fahey, Curtis, Hache, Philip, Hache, Richard, Rubinger, Luc, Khan, Moin, Richards, Doug, and Grant, John A.

Subjects
HOCKEY goalkeepers, NUMERIC databases, SPORTS sciences, SPORTS administration, HOCKEY
Abstract

Background: Load management is a sports science concept describing the execution of well-established training principles to measure athletic workloads and enhance performance. The term 'load management' has become common in sports media to refer to a much wider range of scenarios, including the idea that by limiting regular season workload for athletes, their health and playoff performance will improve. Varying links between load and performance have been demonstrated in baseball and soccer. The purpose of this study was to objectively assess the impact of regular season workload on postseason performance among National Hockey League (NHL) goalies. Hypothesis: NHL goalies with lighter regular season workloads will perform better in postseason appearances. Study Design: Retrospective cohort. Level of Evidence: Level 3. Methods: NHL goalies with a minimum of 20 regular season games played and 3 playoff game appearances in the same season since 2013-2014 were eligible for inclusion. All regular season and postseason workload and performance metrics were collected from publicly available statistical databases. Workload outcomes included games started, minutes played, and shots faced. Performance outcomes included goals against average, save percentage, goals saved above average, and quality start percentage. Multivariable linear regression was used to determine whether regular season workload predicted postseason performance, when controlling for age and injury status. Results: A total of 51 goalies contributed 111 goalie-seasons to the analysis. The results of the primary model indicated that regular season workload explained only 6.8% of the variance in postseason performance, and that this relationship was not significant (R 2 = 0.068; F (5,92) = 1.335; P = 0.26). Conclusion: Based on data from 6 full seasons, there is no evidence to support a specific regular season game limit among NHL goalies with the aim of improved performance. Clinical Relevance: Individualized workload plans may be more appropriate than a single league-wide standard. [ABSTRACT FROM AUTHOR]

Published
2025
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27. Prevalence and clinical impact of radiographic sclerotic lines adjacent to cementless tibial stems in revision total knee arthroplasty: a long-term follow-up study.

Author

Greenberg, Arieh, Cohen, Daniel, Ekhtiari, Seper, Abughaduma, Nada Read, Hakim, Raja, Barimani, Bardia, Wolfstadt, Jesse, and Backstein, David

Abstract

Intramedullary stem extensions are typically added to the femoral and tibial components during revision total knee arthroplasty (TKA) to augment fixation of the components and improve survivorship. A commonly used option includes hybrid fixation with cement at the interface between the component and the host bone combined with cementless diaphyseal fitting stems. Radiographic sclerotic lines may appear with these constructs over time, and it is unclear if this finding has implications relative to implant survivorship. The purpose of this study was to quantify the prevalence of sclerotic lines at the bone-implant interface and assess the impact of progressive sclerotic lines on revision for aseptic loosening. Methods: A retrospective chart review of a consecutive series of patients who underwent revision TKA at a single tertiary care institution between January 2001 and December 2009 was performed. Data were collected regarding patient demographics, stem size, types of implants, and complications. Radiological reports and radiographs were evaluated for sclerotic lines, propagation, and their location around the tibial stem. Aseptic loosening rates were compared between patients with and without sclerotic lines. Results: One hundred and fifty-three patients with at least 15 years of follow-up were identified. The mean follow-up was 16.5 ± 4.12 years (range 15–23). Overall, 19 patients required re-revision surgery. Survivorship free of failure due to aseptic loosening was 94.8% (95% CI 76.4–98) at 15 years, with three patients requiring re-revision surgery for aseptic loosening. Twelve (7.8%) patients were found to have sclerotic lines surrounding the tibial stem, all under 2 mm in width. Two (1%) patients with sclerotic lines required re-revision surgery, one patient due to infection and one due to aseptic loosening. There was no significant difference in rates of aseptic loosening in patients with or without sclerotic lines. Conclusion: Radiographic sclerotic lines around revision TKA stems—measuring less than 2mm wide, nonprogressive, and located at the lateral-distal aspect of the stem—were identified in fewer than 8% of cases and did not correlate with re-revision surgery. [ABSTRACT FROM AUTHOR]

Published
2025
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46. Surrogate Endpoints

Author

Ekhtiari, Seper, Coughlin, Ryan P., Simunovic, Nicole, Ayeni, Olufemi R., Thoma, Achilles, editor, Sprague, Sheila, editor, Voineskos, Sophocles H., editor, and Goldsmith, Charles H., editor

Published
2019
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