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Beitragstitel Is the rate of quadricipital tendon rupture lower after total knee arthroplasty using subvastus approach compared to medial para-patellar ?
Beitragscode P29
  1. Elmedin Salihi CHUV Vortragender
  2. Boris Morattel Etablissements Hospitaliers du Nord Vaudois Ehnv hôpital saint loup
  3. Jean-François Fischer
  4. Olivier Husmann eHnv, site d'Yverdon
  5. Alexandre Lunebourg EHNV Yverdon-les-Bains
Präsentationsform Poster
  • A05 - Knie
Abstract Introduction: Medial para-patellar approach (MPA) is the gold standard to perform Total Knee Arthroplasty (TKA). Clinical results after TKA using MPA compared to subvastus approach (SA) are similar but the rate of quadricipital tendon rupture is rarely reported. The objective of this study was to identify if there is a difference concerning quadricipital tendon rupture using these two approaches and risk factors.

Methods: A retrospective comparative study was conducted in our institution. Patients who underwent TKA performed by MPA and SA between 2015 and 2020 were included. Minimum follow-up was one year and patients who presented history of infection, previous surgeries of extensor apparatus were excluded. Thus, 449 TKA performed by MPA were included and compared to 183 TKA performed by SA (Mean age 67 +/- 9.2 years / BMI 30.5 +/- 5.9 Kg/m2 / Sex ratio: 371F/261H). Comorbidities of patients as diabetes, obesity, renal insufficiency and neurological disorders were analyzed to identify risk factor of quadricipital tendon rupture. Mean follow-up was 1.1 years +/- 0.3 years.

Results: Rupture of quadricipital tendon were higher in TKA performed by MPA (2,3%) compared to TKA performed by SA (0%) (p < 0.05). In the 9 patients (Mean age 71 +/- 10.8 years / Sex ratio: 4F/5H) with quadricipital tendon rupture 1 have diabetes, 3 have BMI > 30, 1 have renal insufficiency and 0 have neurological disorders, but none comorbidities were identified as risk factors.

Conclusion and perspectives: This study suggest that TKA performed by SA have lower rate of quadricipital tendon rupture than a TKA performed by MPA and no risk factors were identified. Prospective study with a larger number of patient are needed to confirm these results, especially regarding risk factors.