case_images: PMC5903308_01
case_images: PMC5903308_02
case_images: Patient 1: knee X-rays at follow-up (age 15).
case_images: CRIOR2018-6415713.001.jpg
case_images: PMC5903308_02_CRIOR2018-6415713.001.jpg
case_images: fig1
case_images: After 11 years of observation, the patellar dislocation had evolved from reducible to permanent, inducing a femorotibial subluxation with tibia external rotation in flexion (Figure 1).
case_images: PMC5903308_03
case_images: PMC5903308_04
case_images: Patient 2: preoperative CT scan 3D reconstructions showing patella subluxation and femorotibial rotation (a) and normal state (b).
case_images: CRIOR2018-6415713.002.jpg
case_images: PMC5903308_04_CRIOR2018-6415713.002.jpg
case_images: fig2
case_images: Clinical and CT scan (Figure 2) workups of the right knee showed then an extension deficit of about 30 , patella luxation, and tibial external rotation of about 90 .
case_images: Peroperative pictures: after LLR and MPFL tenoplasty with allograft (a); a portion of vastus medialis was individualised and translocated to the lateral aspect of the patella (Krogius tenoplasty) (b); final sutures (c).
case_images: CRIOR2018-6415713.003.jpg
case_images: PMC5903308_04_CRIOR2018-6415713.003.jpg
case_images: fig3
case_images: It was conducted in two steps: first, an extensive lateral retinaculum release allowing patella reduction, then MPFL double-bundle reconstruction using tendon allograft, associated to Krogius tenoplasty (Figure 3).
case_images: Patient 2: X-ray at follow-up. The patella is centered.
case_images: CRIOR2018-6415713.004.jpg
case_images: PMC5903308_04_CRIOR2018-6415713.004.jpg
case_images: fig4
case_images: His patella kept a centered position on X-ray (Figure 4) and physical checks at last follow-up.