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Table 4 Plate characteristics and positioning variables identified on radiographic and computed tomographic examination and their association with fracture complication outcome

From: In vitro analysis and in vivo assessment of fracture complications associated with use of locking plate constructs for stabilization of caprine tibial segmental defects

Classification

Variable name

Variable description

Unit

Outcome

P-Value

No fracture

Fracture

(Mean ± St. Dev.)

(Mean ± St. Dev.)

Plate Characteristics

TCR

Tibial coverage ratio

N/A (ratio)

0.748 ± 0.047

0.682 ± 0.039

 < 0.001

Proximodistal Positioning

PrT-Pl

Distance from proximal tibia to proximal extent of plate

mm

26.30 ± 9.89

35.51 ± 7.74

0.201

Pl-DT

Distance from plate to distal tibia

mm

30.89 ± 5.69

32.66 ± 7.86

0.535

S4-D

Distance from fourth screw to defect

mm

28.64 ± 8.91

18.69 ± 5.69

0.219

D-S5

Distance from defect to fifth screw

mm

28.53 ± 7.67

21.39 ± 8.34

0.008

Craniocaudal Positioning

Pr-AP

CrCd plate position at proximal tibia

N/A (ratio)

0.667 ± 0.085

0.659 ± 0.047

0.228

D-AP

CrCd plate position at distal tibia

N/A (ratio)

0.436 ± 0.079

0.399 ± 0.067

0.32

Mid-AP

CrCd plate position at mid-tibia

N/A (ratio)

0.552 ± 0.056

0.529 ± 0.041

N/A

AP-Angle

Angle of plate position relative to tibial transverse axis

Degrees

84.63 ± 1.44

84.15 ± 1.37

0.221

PrD-Diff

Change in relative plate position between proximal and distal tibia

N/A

0.231 ± 0.120

0.260 ± 0.082

N/A

Mediolateral Positioning

ML-Diff

Change in relative plate position between medial (cis) and lateral (trans) cortices

N/A

0.052 ± 0.048

0.052 ± 0.048

0.825