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Table 1 Demographics and anatomical risk factors of patellar instability in the study cohort

From: Mental and physical health-related quality of life in patients with recurrent patellar dislocations—a generic and disease-specific quality of life questionnaire assessment

 

Study cohort (n = 38)

Male/female

13/25

Age

20 ± 5 years (14 – 33 years)

Follow-up

3.5 ± 0.8 years (2 – 5 years)

Mean course of the disease

4.7 ± 3.9 years (1—18 years)

Trochlear dysplasia

  None

8 (21.1%)

  Typ A

14 (36.8%)

  Typ B

10 (26.3%)

  Typ C

6 (15.8%)

  Typ D

-

TT–TG distance (mm)

13.6 ± 5.0

TT–PCL distance (mm)

23.7 ± 3.2

Patellar height

1,2 ± 0,3

( +) Varus /

(-) Valgus (°)

- 0,9 ± 3.0

  1. Trochlear dysplasia was assessed according to Dejour’ classification and patellar height was assessed according to the Caton-Deschamps Index. Shown are the mean values ± standard deviations and absolute and relative frequencies. TT–TG tibial tuberosity–trochlear groove, TT–PCL tibial tuberosity–posterior cruciate ligament