Abstract
Purpose Increased ulnar variance has been shown to lead to diminished load borne by the distal radius. The purpose of this study was to determine the correlations among ulnar variance, bone mineral density, and load to failure at the distal radius. Methods Posteroanterior radiographs and computed tomographic scans were taken of 12 cadaveric forearms in neutral rotation. Ulnar variance was measured for each wrist by the method of perpendiculars. Measurements of cortical, trabecular, and combined bone density were made at the distal radius. We performed linear regression analysis and correlation analysis to determine the relationship between bone densities and ulnar variance measurements. Next, we loaded the 12 cadaveric radii to failure under axial compression. Linear regression analysis and correlation analysis were then performed to determine the relationship between load to failure and both ulnar variance and cortical density. Results Increased ulnar variance was significantly correlated with decreased cortical bone density at the distal radius and both were correlated with decreased load to failure. We found no correlation between ulnar variance and trabecular density or combined trabecular and cortical bone density at the distal radius. Conclusions Our study found that increased ulnar variance and decreased cortical bone mineral density correlates with decreased load to failure under axial compression. Clinical relevance Ulnar variance is linked to both bone quality and load to failure at the distal radius.
| Original language | English (US) |
|---|---|
| Pages (from-to) | e461-e468 |
| Journal | Journal of Hand Surgery |
| Volume | 41 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1 2016 |
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Keywords
- Bone mechanics
- fracture
- radius
- ulna
ASJC Scopus subject areas
- Surgery
- Orthopedics and Sports Medicine
Cite this
Relationship Between Ulnar Variance, Cortical Bone Density, and Load to Failure in the Distal Radius at the Typical Site of Fracture Initiation. / Casagrande, Danielle J.; Morris, Randal P.; Carayannopoulos, Nikoletta L.; Buford, William L.
In: Journal of Hand Surgery, Vol. 41, No. 12, 01.12.2016, p. e461-e468.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relationship Between Ulnar Variance, Cortical Bone Density, and Load to Failure in the Distal Radius at the Typical Site of Fracture Initiation
AU - Casagrande, Danielle J.
AU - Morris, Randal P.
AU - Carayannopoulos, Nikoletta L.
AU - Buford, William L.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Purpose Increased ulnar variance has been shown to lead to diminished load borne by the distal radius. The purpose of this study was to determine the correlations among ulnar variance, bone mineral density, and load to failure at the distal radius. Methods Posteroanterior radiographs and computed tomographic scans were taken of 12 cadaveric forearms in neutral rotation. Ulnar variance was measured for each wrist by the method of perpendiculars. Measurements of cortical, trabecular, and combined bone density were made at the distal radius. We performed linear regression analysis and correlation analysis to determine the relationship between bone densities and ulnar variance measurements. Next, we loaded the 12 cadaveric radii to failure under axial compression. Linear regression analysis and correlation analysis were then performed to determine the relationship between load to failure and both ulnar variance and cortical density. Results Increased ulnar variance was significantly correlated with decreased cortical bone density at the distal radius and both were correlated with decreased load to failure. We found no correlation between ulnar variance and trabecular density or combined trabecular and cortical bone density at the distal radius. Conclusions Our study found that increased ulnar variance and decreased cortical bone mineral density correlates with decreased load to failure under axial compression. Clinical relevance Ulnar variance is linked to both bone quality and load to failure at the distal radius.
AB - Purpose Increased ulnar variance has been shown to lead to diminished load borne by the distal radius. The purpose of this study was to determine the correlations among ulnar variance, bone mineral density, and load to failure at the distal radius. Methods Posteroanterior radiographs and computed tomographic scans were taken of 12 cadaveric forearms in neutral rotation. Ulnar variance was measured for each wrist by the method of perpendiculars. Measurements of cortical, trabecular, and combined bone density were made at the distal radius. We performed linear regression analysis and correlation analysis to determine the relationship between bone densities and ulnar variance measurements. Next, we loaded the 12 cadaveric radii to failure under axial compression. Linear regression analysis and correlation analysis were then performed to determine the relationship between load to failure and both ulnar variance and cortical density. Results Increased ulnar variance was significantly correlated with decreased cortical bone density at the distal radius and both were correlated with decreased load to failure. We found no correlation between ulnar variance and trabecular density or combined trabecular and cortical bone density at the distal radius. Conclusions Our study found that increased ulnar variance and decreased cortical bone mineral density correlates with decreased load to failure under axial compression. Clinical relevance Ulnar variance is linked to both bone quality and load to failure at the distal radius.
KW - Bone mechanics
KW - fracture
KW - radius
KW - ulna
UR - http://www.scopus.com/inward/record.url?scp=85000461330&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85000461330&partnerID=8YFLogxK
U2 - 10.1016/j.jhsa.2016.08.021
DO - 10.1016/j.jhsa.2016.08.021
M3 - Article
C2 - 27707565
AN - SCOPUS:85000461330
VL - 41
SP - e461-e468
JO - Journal of Hand Surgery
JF - Journal of Hand Surgery
SN - 0363-5023
IS - 12
ER -