PMC8371642_01
Preoperative X-rays (anteroposterior and lateral views) of patient 1: patella alta, Caton Deschamps index = 2.47.
CRIOR2021-9951754.001.jpg
PMC8371642_01_CRIOR2021-9951754.001.jpg
fig1
The Caton Deschamps index measured 2.47 on the X-rays, and the patella was 9 cm from the anterior tibial tuberosity (ATT) (Figure 1).
Preoperative MRI of patient 1: atrophy and poor tissue quality of the left quadriceps muscle.
CRIOR2021-9951754.002.jpg
PMC8371642_01_CRIOR2021-9951754.002.jpg
fig2
The preoperative magnetic resonance imaging (MRI) showed significant atrophy and poor tissue quality of the quadriceps muscle (Figure 2).
PMC8371642_02
Preoperative X-rays (anteroposterior and lateral views) of patient 2. Caton Deschamps index = 0.82.
CRIOR2021-9951754.003.jpg
PMC8371642_02_CRIOR2021-9951754.003.jpg
fig3
The Caton Deschamps index measured 0.82 on the X-rays (Figure 3).