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Comparison of the modified subvastus and medial parapatellar approaches in total knee arthroplasty

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Abstract

In this paper, we evaluated the difference between the modified subvastus approach and the medial parapatellar approach in total knee arthroplasty(TKA). We assessed the time of active straight-leg raise (SLR) post-operatively and the range of flexion of the operated knee at the tenth post-operative day, 6 weeks and 6 months, 12 months and 3 years. We investigated the degree of the patellar tilt and subluxation 24 months post-operatively. The patients who underwent the modified subvastus approach performed active SLR earlier (mean 0.5 days) than the medial parapatellar approach patients (mean 2.2 days). Knee flexion was better at the tenth post-operative day in the modified subvastus approach group compared to the medial parapatellar approach group. There was no statistical difference between the two groups with regard to the patellar tilt and subluxation. We conclude that the modified subvastus approach is recommendable in primary TKA.

Résumé

Nous avons évalué la différence entre l’abord médial para patellaire et l’abord modifié subvastus lors de la mise en place d’une prothèse totale du genou. Nous avons apprécié le temps de récupération post-opératoire de l’extension active du genou et le degré de flexion de celui-ci à 10 jours, 6 semaines, 6, 12 et 36 mois. Nous avons également exploré les complications rotuliennes, notamment subluxations à 24 mois. Les patients ayant bénéficié d’un abord subvastus récupèrent une extension active plus précoce (en moyenne de 0,5 jours), contre 2,2 jours pour l’abord médian. L’amélioration de la flexion du genou est également meilleure à 10 jours post-opératoire dans ce groupe. Il n’y a pas de différence significative entre ces deux groupes en ce qui concerne les problèmes rotuliens. Nous pensons que l’abord subvastus est à recommander dans la mise en place d’une prothèse totale du genou.

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Correspondence to Yong Seuk Lee.

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Jung, Y.B., Lee, Y.S., Lee, E.Y. et al. Comparison of the modified subvastus and medial parapatellar approaches in total knee arthroplasty. International Orthopaedics (SICOT) 33, 419–423 (2009). https://doi.org/10.1007/s00264-007-0510-y

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  • DOI: https://doi.org/10.1007/s00264-007-0510-y

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