Table 2 Summary of characteristics of 123 dogs in the Exceptional Aging in Rottweilers Study.

From: Correlates of estimated lifetime cruciate ligament survival inform potential rupture risk reduction strategies: findings from the Exceptional Aging in Rottweilers Study

Variable

Total (n = 123)

Residence

Number of U.S. states

37 states and Canada

Number of households

119

Sex, #Females, #Males

76F, 47M

Age at Death, median (range), in years

14.1 (13.1–16.5)

Age at CCL Status Ascertainment, median (range), in years

13.5 (13.0–15.9)

Date of CCL Status Ascertainment

March 2010–Feb 2020

Lifetime CCL Outcome

Lifelong ligament survival, n (%)

81 (65)

Unilateral rupture, n (%)

24 (20)

Bilateral rupture, n (%)

18 (15)

Age at First CCL Rupture

Overall (n = 38), median (range), in years

6.0 (2.0–13.6)

Unilateral (n = 20), median (range), in years

9.9 (3.8–13.6)

Bilateral (n = 18), median (range), in years

3.9 (2.0–8.7)

Surgical Repair of CCL Rupture (CCLR)

Surgically treated dogs, n (% dogs with CCLR)

24 (57)

Number of operations

38 operations in 24 dogs

TPLO technique, n (% operations)

20 (53%)

Injury to surgery interval, median (IQR), in weeks

2.0 (0.9–4.0)

Age at Gonad Removal

Females (N = 76), median (IQR), in years

4.4 (1.1, 6.8)

Females ≤ 24 months (EED24m), n (%)

23 (30)

Males (N = 47), median (IQR), in years

6.8 (2.5, 13.5)

Males ≤ 24 months (EED24m), n (%)

10 (21)

Reason for Gonad Removal

Abn Ortho/Conform, n (%)

7 (6)

Other reasons, n (%)

103 (94)

Lifetime Gonad Retention, #Females, #Males

0F, 14 M

Adult Height

Females (N = 76), median (range), in cm

61.0 (54.6–67.3)

Males (N = 47), median (range), in cm

63.5 (61.0–68.6)

Reproductive Status in 53 Females with > 24 m Ovary Exposure

Parous, n (% of reproductively mature females)

21 (40)

Body Condition

Precedent overweight, n (%)

20 (16)

Cause of Death/Euthanasia

Sudden death, n (%)

14 (11.4)

Frailty, n (%)

19 (15.4)

Cancer, n (%)

30 (24.4)

Other, n (%)

40 (32.5)

Insufficient information, n (%)

12 (9.8)

DJD, n (%)

8 (7.2)

  1. Abn Ortho/Conform abnormal conformation/orthopedic abnormality, CCL cranial cruciate ligament, DJD = degenerative joint disease, EED24m early endocrine disruption (EED) caused by gonad removal during the developmental period, i.e., the first 24 months(24 m) of life, F,M female, male, IQR interquartile range, Parous females producing offspring, TPLO tibial plateau leveling osteotomy, # number.