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Assessing the Relationship Between Bone Density and Loss of Reduction in Nonsurgical Distal Radius Fracture Treatment.

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Citation: Journal of Hand Surgery - American Volume. 46(5):377-385.e2, 2021 May.PMID: 33741214Institution: Curtis National Hand CenterForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: IN PROCESS -- NOT YET INDEXEDYear: 2021 Local holdings: Available in print through MWHC library: 1999 - 2002, Available online from MWHC library: 1995 - presentISSN:

0363-5023

Name of journal: The Journal of hand surgeryAbstract: CONCLUSIONS: A 2MCP in the osteoporosis range and unstable fractures by Lafontaine criteria were each associated with a significant increase in ulnar variance after nonsurgical treatment for DRFs. Patients with unstable fractures and 2MCP less than 50% are likely to have an additional increase of greater than 1 mm in ulnar variance at the end of nonsurgical fracture treatment than patients with similar injuries, but without these features. Using initial radiographs to identify patients with low bone mineral density that may be at risk for more substantial loss of reduction can assist with decision making for managing DRFs.METHODS: We retrospectively reviewed 304 patients from 2 health systems with DRFs treated without surgery. The AO classification, 2MCP (<50% indicating osteoporosis), and fracture stability based on Lafontaine criteria were determined from prereduction radiographs. Radial inclination, radial height, volar tilt, ulnar variance, and intra-articular stepoff were measured on initial and 6-week final follow-up radiographs and compared. Bivariate analysis was used to evaluate the association between Lafontaine criteria or 2MCP and changes in radiographic parameters. Radiographic parameters with significant associations in bivariate analysis were evaluated in multivariable models adjusted for age, sex, initial radiographic parameters, reduction status, and AO fracture type.PURPOSE: Whether low bone mineral density affects loss of reduction for distal radius fractures (DRFs) managed without surgery is unknown. Our purpose was to understand how bone mineral density, based on second metacarpal cortical percentage (2MCP) measurement, affects DRF healing after nonsurgical treatment.RESULTS: Across all patients, after 6 weeks of nonsurgical treatment, ulnar variance (shortening of the radius) increased by an average of 1.4 mm. Bivariate analysis showed that lower 2MCP and unstable fractures per Lafontaine criteria were each significantly associated with an increase in ulnar variance (P < .05). In adjusted multivariable models, having both 2MCP less than 50% and an unstable fracture together was associated with an additional 1.2-mm increase in ulnar variance (P < .05).TYPE OF STUDY/LEVEL OF EVIDENCE: Prognostic IV. Copyright (c) 2021 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.All authors: Ghodasra JH, Giladi AM, Means KR Jr, Rozental TD, Sanghavi KK, Yousaf ISFiscal year: FY2021 Digital Object Identifier:

https://dx.doi.org/10.1016/j.jhsa.2021.02.002

Date added to catalog: 2021-06-28

Holdings ( 1 )
Title notes ( 7 )

Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode
Journal Article	MedStar Authors Catalog	Article	33741214	Available		33741214

Available in print through MWHC library: 1999 - 2002, Available online from MWHC library: 1995 - present

CONCLUSIONS: A 2MCP in the osteoporosis range and unstable fractures by Lafontaine criteria were each associated with a significant increase in ulnar variance after nonsurgical treatment for DRFs. Patients with unstable fractures and 2MCP less than 50% are likely to have an additional increase of greater than 1 mm in ulnar variance at the end of nonsurgical fracture treatment than patients with similar injuries, but without these features. Using initial radiographs to identify patients with low bone mineral density that may be at risk for more substantial loss of reduction can assist with decision making for managing DRFs.

METHODS: We retrospectively reviewed 304 patients from 2 health systems with DRFs treated without surgery. The AO classification, 2MCP (<50% indicating osteoporosis), and fracture stability based on Lafontaine criteria were determined from prereduction radiographs. Radial inclination, radial height, volar tilt, ulnar variance, and intra-articular stepoff were measured on initial and 6-week final follow-up radiographs and compared. Bivariate analysis was used to evaluate the association between Lafontaine criteria or 2MCP and changes in radiographic parameters. Radiographic parameters with significant associations in bivariate analysis were evaluated in multivariable models adjusted for age, sex, initial radiographic parameters, reduction status, and AO fracture type.

PURPOSE: Whether low bone mineral density affects loss of reduction for distal radius fractures (DRFs) managed without surgery is unknown. Our purpose was to understand how bone mineral density, based on second metacarpal cortical percentage (2MCP) measurement, affects DRF healing after nonsurgical treatment.

RESULTS: Across all patients, after 6 weeks of nonsurgical treatment, ulnar variance (shortening of the radius) increased by an average of 1.4 mm. Bivariate analysis showed that lower 2MCP and unstable fractures per Lafontaine criteria were each significantly associated with an increase in ulnar variance (P < .05). In adjusted multivariable models, having both 2MCP less than 50% and an unstable fracture together was associated with an additional 1.2-mm increase in ulnar variance (P < .05).

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