Materials and Methods

 

A statistical software package was used for data analysis (SAS 9.2, SAS Institute Inc., Cary, NC). Measurements taken for each forelimb before and after treatment were compared by the dependent sample t-statistic. For statistical analysis, the difference of hoof wall thickness at the proximal and distal hoof wall was calculated. This difference reflects alterations to the hoof wall as a result of laminitis and decreasing values a found in improving patients.

Results

 

Variable

 

N

Mean

Std Dev

Minimum

Maximum

Time between pre- and posttreatment evaluations in months

 

26

8.9230769

4.0538680

5.0000000

20.0000000

Rotation

 

Pre

26

11.8076923

5.6869621

5.0000000

29.0000000

Post

26

5.4230769

5.1859277

0

20.0000000

Distance coronary band to extensor process

Pre

26

12.1153846

3.2811818

6.0000000

19.0000000

Post

26

10.9807692

3.6013352

5.0000000

18.0000000

Difference of proximal and distal hoof wall thickness

Pre

26

7.5384615

3.5802879

2.0000000

19.0000000

Post

26

4.4615385

3.4552079

0

12.0000000

Sole depth

Pre

26

8.5769231

2.3566600

4.0000000

13.0000000

Post

26

10.6923077

2.3284197

8.0000000

16.0000000

Palmar angle

Pre

11.9230769

6.5661135

3.0000000

31.0000000

Post

5.7692308

3.5361866

0

15.0000000

Obel laminitis score

Pre

3.1153846

1.0030722

0.5000000

4.0000000

Post

0.1153846

0.2935198

0

1.0000000

 

Table 1

 

Descriptive information on the measurements taken at pre- and post-treatment examinations is given in Table 1.

 

The distance between coronary band and extensor process did not vary significantly between pre-treatment and post-treatment evaluations (p = 0.0676, 95% CI for difference -0.087 2.357).

 

All horses demonstrated decreased lameness scores at post-treatment evaluation and a statistically significant reduction of the Obel laminitis score was detected (p < 0.0001, 95% CI for difference 2.596 3.403)

 

Sole depth measurements were significantly larger at post-treatment evaluations (p = 0.0055, 95% CI for difference 0.681 - 3.55)

A statistically significant reduction of palmar angle measurements when comparing both examinations was detected (p < 0.0001, 95% CI for difference 4.597 7.710).

 

The angles of rotation at post-treatment evaluation were determined to be significantly smaller than those at the pre-treatment examination (p < 0.0001, 95% CI for difference 4.466 8.302).

 

The difference of the hoof wall thicknesses at the proximal and distal hoof was found to be significantly reduced at post-treatment evaluation (p = <0.0001, 95% CI for difference 2.101 4.052).