Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report

Patella fractures correspond to 1 % of all fractures. In recent decades, the role of the patella in increasing the lever arm of the quadriceps has been well defined. Surgical treatment is indicated for open fractures, those that compromise the function of the extensor mechanism, those with a joint g...

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Main Authors: José Torrealba Araujo, Mauricio Núñez Hernández, David Quilodrán Romero, Lizandra Rojas Encina
Format: Article
Language:English
Published: Elsevier 2023-08-01
Series:Trauma Case Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2352644023000997
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author José Torrealba Araujo
Mauricio Núñez Hernández
David Quilodrán Romero
Lizandra Rojas Encina
author_facet José Torrealba Araujo
Mauricio Núñez Hernández
David Quilodrán Romero
Lizandra Rojas Encina
author_sort José Torrealba Araujo
collection DOAJ
description Patella fractures correspond to 1 % of all fractures. In recent decades, the role of the patella in increasing the lever arm of the quadriceps has been well defined. Surgical treatment is indicated for open fractures, those that compromise the function of the extensor mechanism, those with a joint gap >5 mm and/or joint incongruity >3 mm, a group that corresponds to around 30 % of the total. Anatomical reduction and stabilization with various types of modified tension bands is the most frequently used procedure. Biomechanical studies have shown that stabilization through the use of a tension band replacing the Kirchner wires with cannulated screws presents adequate resistance to fracture displacement and provides greater stability than the classic configuration, maintaining the theoretical principle of converting the forces of anterior tension of the patella generated by the quadriceps in compression at the level of the articular surface. A case of a patient who required reduction and osteosynthesis of an exposed patella fracture, associated with an extensor mechanism lesion, is presented. Clinical and radiographic characteristics of the patient and the resolution of the case are described.
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spelling doaj.art-8744b2d231b3494c887da97cb9f1a1502023-06-16T05:10:09ZengElsevierTrauma Case Reports2352-64402023-08-0146100851Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case reportJosé Torrealba Araujo0Mauricio Núñez Hernández1David Quilodrán Romero2Lizandra Rojas Encina3Finis Terrae University, Chile; Corresponding author at: Finis Terrae University, Providencia, Santiago, Chile.Instituto de Seguridad del Trabajador, Santiago, ChileInstituto de Seguridad del Trabajador, Santiago, ChileInstituto de Seguridad del Trabajador, Santiago, ChilePatella fractures correspond to 1 % of all fractures. In recent decades, the role of the patella in increasing the lever arm of the quadriceps has been well defined. Surgical treatment is indicated for open fractures, those that compromise the function of the extensor mechanism, those with a joint gap >5 mm and/or joint incongruity >3 mm, a group that corresponds to around 30 % of the total. Anatomical reduction and stabilization with various types of modified tension bands is the most frequently used procedure. Biomechanical studies have shown that stabilization through the use of a tension band replacing the Kirchner wires with cannulated screws presents adequate resistance to fracture displacement and provides greater stability than the classic configuration, maintaining the theoretical principle of converting the forces of anterior tension of the patella generated by the quadriceps in compression at the level of the articular surface. A case of a patient who required reduction and osteosynthesis of an exposed patella fracture, associated with an extensor mechanism lesion, is presented. Clinical and radiographic characteristics of the patient and the resolution of the case are described.http://www.sciencedirect.com/science/article/pii/S2352644023000997Patellar fractureOpen fracturesKnee extensor mechanismPatellar tendonAnchor repair
spellingShingle José Torrealba Araujo
Mauricio Núñez Hernández
David Quilodrán Romero
Lizandra Rojas Encina
Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
Trauma Case Reports
Patellar fracture
Open fractures
Knee extensor mechanism
Patellar tendon
Anchor repair
title Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
title_full Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
title_fullStr Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
title_full_unstemmed Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
title_short Osteosynthesis of a patellar fracture with repair of the knee extensor mechanism: Case report
title_sort osteosynthesis of a patellar fracture with repair of the knee extensor mechanism case report
topic Patellar fracture
Open fractures
Knee extensor mechanism
Patellar tendon
Anchor repair
url http://www.sciencedirect.com/science/article/pii/S2352644023000997
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