CC BY-NC-ND 4.0 · Revista Chilena de Ortopedia y Traumatología 2022; 63(02): e83-e86
DOI: 10.1055/s-0042-1750364
Artículo Original | Original Article

Biomechanical Assessment of the Prepatellar Quadriceps Continuation

Article in several languages: español | English
1   Departamento de Ortopedia, Clínica las Condes, Santiago, Chile
2   Departamento de Ortopedia, Hospital Clínico Universidad de Chile, Santiago, Chile
3   Departamento de Biomecánica, Clínica MEDS, Santiago, Chile
1   Departamento de Ortopedia, Clínica las Condes, Santiago, Chile
1   Departamento de Ortopedia, Clínica las Condes, Santiago, Chile
2   Departamento de Ortopedia, Hospital Clínico Universidad de Chile, Santiago, Chile
› Author Affiliations
Funding The authors declare that they have received no funding pertaining to the performance of the present study.


Objective To determine the ultimate tensile strength (UTS) of the prepatellar quadriceps continuation (PQC).

Materials and Methods A human cadaveric study was performed. Ten fresh-frozen specimens were used. The proximal and medial thirds of the anterior cortex of the patella were used to assess the mechanical properties of the PQC. In each specimen, transverse section areas measuring 0.2 cm2 (A1) and 1 cm2 (A2) were studied. A gradual load was applied to determine the UTS.

Results The median UTS of A1 was of 232.56 N (range: 141.23 N to 295.33 N), and that of A2 was of 335.30 N (range: 216.45 N to 371.40 N). The increment in UTS was significant between the 2 areas (p = 0.006).

Conclusions The clinical significance of the present study lies in the fact that it shows that the PQC is a strong tissue that can be a safe anchor for reconstruction around the patella. A relatively small area supports at least 140 N, and, as the area grows, the UTS increases as well.

Level of evidence Biomechanical study.

Availability of Data

The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.

Author's contributions

CI: contributed with the original idea, conceived the study, drafted the paper, and performed a critical review of the final paper. RS: performed the biomechanical testing. MI: coordinated and supervised the management of the cadaver specimens. RN: performed a critical review of the final paper. MB: performed the data analysis, literature review and drafted the manuscript. All authors have read and approved the final submitted manuscript.

Publication History

Received: 28 March 2021

Accepted: 10 May 2022

Article published online:
11 July 2022

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