The femoral posterior fan-like extension of the ACL insertion increases the failure load.
Knee Surg Sports Traumatol Arthrosc
; 28(4): 1113-1118, 2020 Apr.
Article
en En
| MEDLINE
| ID: mdl-31642946
ABSTRACT
PURPOSE:
To examine the role of the posterior fan-like extension of the ACL's femoral footprint on the ACL failure load.METHODS:
Sixteen (n = 16) fresh frozen, mature porcine knees were used in this study and randomized into two groups (n = 8) intact femoral ACL insertion (ACL intact group) and cut posterior fan-like extension of the ACL (ACL cut group). In the ACL cut group, flexing the knees to 90°, created a folded border between the posterior fan-like extension and the midsubstance insertion of the femoral ACL footprint and the posterior fan-like extension was dissected and both areas were measured. Specimens were placed in a testing machine at 30° of flexion and subjected to anterior tibial loading (60 mm/min) until ACL failure.RESULTS:
The intact ACL group had a femoral insertion area of 182.1 ± 17.1 mm2. In the ACL cut group, the midsubstance insertion area was 113.3 ± 16.6 mm2, and the cut posterior fan-like extension portion area was 67.1 ± 8.3 mm2. The failure load of the ACL intact group was 3599 ± 457 N and was significantly higher (p < 0.001) than the failure load of the ACL cut group 392 ± 83 N.CONCLUSION:
Transection of the posterior fan-like extension of the ACL femoral footprint has a significant effect on the failure load of the ligament during anterior loading at full extension. Regarding clinical relevance, this study suggests the importance of the posterior fan-like extension of the ACL footprint which potentially may be retained with remnant preservation during ACL reconstruction. Femoral insertion remnant preservation may allow incorporation of the fan-like structure into the graft increasing graft strength.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Resistencia a la Tracción
/
Ligamento Cruzado Anterior
/
Reconstrucción del Ligamento Cruzado Anterior
/
Articulación de la Rodilla
Límite:
Animals
Idioma:
En
Año:
2020
Tipo del documento:
Article