# A Comparative Study of the Medial Parapatellar and Midvastus Surgical Approaches for Total Knee Arthroplasty

**Authors:** Robson Rocha da Silva, Marcos Almeida Matos, Danilo Alves Badaró, Pablo Barreto Prata, Diego Ariel de Lima

PMC · DOI: 10.1055/s-0044-1800945 · Revista Brasileira de Ortopedia · 2025-03-04

## TL;DR

This study compares two surgical approaches for knee replacement and finds that one leads to better quadriceps strength recovery.

## Contribution

The study provides empirical evidence comparing functional recovery outcomes of two TKA surgical approaches.

## Key findings

- Both surgical approaches improved recovery outcomes similarly in terms of pain and mobility.
- The midvastus approach resulted in significantly greater quadriceps strength at final follow-up.
- No significant differences were found in walking or stair-climbing ability between the two approaches.

## Abstract

Objective
 To compare the postoperative recovery outcomes of total knee arthroplasty (TKA) between the medial parapatellar (MP) and midvastus (MV) surgical approaches, focusing on quadriceps strength, knee motion range, and pain.

Methods
 This retrospective study included 82 patients with degenerative knee arthropathy who underwent primary TKA. Patients were divided into two groups: one underwent MP and the other MV. Data were collected on quadriceps strength, knee flexion and extension, pain using the visual analog scale (VAS), and the ability to perform functional tasks like walking and stair climbing. Outcomes were assessed at multiple postoperative intervals.

Results
 Both groups showed improvements in all measured parameters from baseline to the last follow-up, with no significant differences between them in terms of pain and the ability to walk and climb stairs. However, the MV group exhibited statistically significant greater quadriceps strength at the final follow-up.

Conclusion
 While both surgical approaches provided similar overall recovery outcomes, MV led to greater improvements in quadriceps strength and knee extension, suggesting a potentially quicker functional recovery in the early postoperative period.

Objetivo
 Comparar os resultados da recuperação pós-operatória da artroplastia total do joelho (ATJ) entre as abordagens cirúrgicas parapatelar medial (PPM) e midvasto (MV), enfocando a força do quadríceps, a amplitude de movimento do joelho e a dor.

Métodos
 Este estudo retrospectivo incluiu 82 pacientes com artropatia degenerativa do joelho que foram submetidos à ATJ primária. Os pacientes foram divididos em dois grupos: um submetido à PPM e o outro à MV. Foram coletados dados sobre a força do quadríceps, flexão e extensão do joelho, dor segundo a escala visual análoga (EVA) e a capacidade de realizar tarefas funcionais, como caminhar e subir escadas. Os resultados foram avaliados em vários intervalos pós-operatórios.

Resultados
 Ambos os grupos mostraram melhorias em todos os parâmetros medidos desde a linha de base até o último acompanhamento, sem diferenças significativas entre eles em termos de dor e a capacidade de caminhar e subir escadas. No entanto, o grupo MV exibiu uma força do quadríceps significativamente maior na última avaliação.

Conclusão
 Embora ambas as abordagens cirúrgicas tenham fornecido resultados de recuperação geral semelhantes, a MV levou a maiores melhorias na força do quadríceps e extensão do joelho, sugerindo uma recuperação funcional mais rápida no período pós-operatório inicial.

## Full-text entities

- **Diseases:** degenerative knee arthropathy (MESH:D019636), pain (MESH:D010146)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

20 references — full list in the complete paper: https://tomesphere.com/paper/PMC11879484/full.md

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Source: https://tomesphere.com/paper/PMC11879484