All studies included used multivariable analysis to make comparisons, and it is of note that HA is much more common than THA in this patient population. Results: In part one, clinical postoperative outcomes of THA and HA were grouped and compared among the 9 studies. Differences in rates of 30-day postoperative adverse outcomes were compared using multivariate logistic regression for unmatched and matched cohorts. Propensity score 1:1 matching was performed. Patients ≥70 years of age who underwent HA or THA for hip fractures were identified from the 2012-2015 National Surgical Quality Improvement (NSQIP) database. In part two, a database analysis comparing THA and HA was done based on close review of the 9 studies included in part one and identification of gaps in the literature. These all included data ranging from 2005 to 2013 and included at least 1,000 patients. Five of the included studies utilized the National Surgical Quality Improvement Program (NSQIP) database, one utilized Hospital Episode Statistics (HES), one utilized The National Hospital Discharge Survey (NHDS), one utilized Swedish Nation Hip Fracture/Arthroplasty Register, and the last utilized the ENCLAVE system of the Centers for Medicare & Medicaid Services (CMS). Ultimately, 9 papers were included in the review. Of the 490, 15 full-text papers were reviewed. The initial search identified 490 references. From there, additional search terms including (3) complication or complications and adverse event or adverse events and (4) registry or database were included. The main search terms for this review were (1) variations on hemiarthroplasty, including hemiarthroplasties, hemi arthroplasty, hemi arthroplasties, hemi-arthroplasty, hemi-arthroplasties (2) variations on arthroplasty, including total arthroplasty, arthroplasties and hip replacement. Methods: A literature search was done iteratively with a systematic use of variations of key search terms in PubMed database. This was done to assess the impact of utilizing this statistical methodology and to best determine differences in perioperative outcomes for these groups. Part two used multivariate analyses with and without propensity matching to compare perioperative outcomes between THA and HA performed for femoral neck fracture in geriatric populations identified in NSQIP. The goal of this was to delineate strengths, limitations, and conclusions of such studies. Part one of this project sought to systematically identify large database studies comparing THA to HA for geriatric hip fractures. Background: Geriatric femoral neck fracture is a common injury for which hemiarthroplasty (HA) or total hip arthroplasty (THA) may be considered in select patients.
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