# The Influence of Different Hamstrings Assemblies on the Final Graft Diameter in Anterior Cruciate Ligament Reconstruction

**Authors:** Lúcio Flávio Biondi Pinheiro, Marcos Henrique Frauendorf Cenni, Thiago César Ladeira Estefani, Allan José Lima Bueno, Thiago Penido Moreira Ferreira, Guilherme Cardoso Ferreira Pina

PMC · DOI: 10.1055/s-0044-1785518 · Revista Brasileira de Ortopedia · 2024-06-22

## TL;DR

This study compares hamstring tendon graft diameters in ACL reconstruction and finds that most patients can use quintuple or sextuple assemblies.

## Contribution

The paper introduces a comparison of graft diameters and feasibility of different hamstring assemblies in ACL reconstruction.

## Key findings

- Quintuple or sextuple assemblies are possible in 97.2% of patients.
- Graft diameter increases by 1 mm per assembly type.
- Sextuple assembly is feasible in 73.2% of patients when both tendons are ≥24 cm.

## Abstract

Objective
 This study aimed to compare gracilis and semitendinosus tendon graft diameters in anterior cruciate ligament (ACL) reconstruction using quadruple, quintuple, and sextuple assemblies. Another objective was to evaluate the percentage of patients in which each assembly type is possible, depending on the length of each free tendon.

Methods
 Seventy-one patients underwent ACL reconstruction using hamstring tendons. We measured the diameters of the quadruple, quintuple, and sextuple assemblies in all patients. We recorded tendon length and graft diameter from three assembly types.

Results
 Assembly comparison showed a statistically significant difference (
p
 < 0.001). In each assembly, graft diameter increased by 1 mm, a statistically significant value (
p
 < 0.001). In 2.8% of patients, the only potential assembly was the quadruple assembly because the free lengths of the 2 tendons removed were lower than 24 cm. The quintuple assembly was possible in 23.9% of subjects, as only the semitendinosus had a minimum length of 24 cm. The sextuple assembly was possible in 73.2% of patients because both tendons were at least 24 cm in length.

Conclusion
 A quintuple or sextuple assembly is possible in 97.2% of cases since the final graft length of at least 8 cm is statistically significant between comparisons.

Objetivo
 Buscamos comparar o diâmetro dos enxertos com utilização dos tendões grácil e semitendíneo na reconstrução do ligamento cruzado anterior (LCA) utilizando as montagens quádrupla, quíntupla e sêxtupla. Outro objetivo é avaliar em qual porcentagem de pacientes é possível cada tipo de montagem, em função do comprimento de cada tendão livre.

Métodos
 Setenta e um pacientes foram submetidos à reconstrução do LCA utilizando tendões isquitibiais. Foram medidos os diâmetros das montagens quádrupla, quíntupla e sêxtupla em todos pacientes. Registramos os comprimento dos tendões e o diâmetro do enxerto com os três tipos de montagens.

Resultados
 As comparações entre as montagens mostraram diferença estatisticamente significativa (
p
 < 0,001). A cada montagem, aumentou 1 mm o diâmetro do enxerto e isso foi estatisticamente significativo (
p
 < 0,001). Em 2,8% dos pacientes, somente a montagem quádrupla foi possível, pois os comprimentos livres dos 2 tendões retirados foram menores que 24 cm. Em 23,9% desses, foi possível a montagem quíntupla; pois somente o semitendíneo tinha comprimento mínimo de 24 cm e, em 73,2%, foi possível a montagem sêxtupla com o comprimento dos 2 tendões igual ou superior a 24 cm.

Conclusão
 Em 97,2% dos casos foi possível realizar a montagem quíntupla ou sêxtupla, já que o comprimento final do enxerto de no mínimo 8 cm apresenta diferença estatisticamente significante entre as comparações.

## Full-text entities

- **Diseases:** anterior cruciate ligament (ACL) (MESH:D000070598)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

_Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/PMC11193592/full.md

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC11193592/full.md

## References

13 references — full list in the complete paper: https://tomesphere.com/paper/PMC11193592/full.md

---
Source: https://tomesphere.com/paper/PMC11193592