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. 2024 Aug;34(6):3073-3079.
doi: 10.1007/s00590-024-04002-9. Epub 2024 Jun 26.

Quadriceps muscle quality and quantity following tibial plateau fracture repair

Nina D Fisher  1 , Sara Solasz  1 , Dimitri Martel  1 , Gregory Chang  1 , Kenneth A Egol  2
Affiliations

Quadriceps muscle quality and quantity following tibial plateau fracture repair

Nina D Fisher et al. Eur J Orthop Surg Traumatol. 2024 Aug.

Abstract

Purpose: To investigate the qualitative and quantitative changes seen in quadriceps muscles [QM] following tibial plateau fracture and surgery.

Methods: A consecutive series of patients with an isolated tibial plateau fracture presenting to a single academic center were enrolled and prospectively followed. Bilateral knee MRIs were performed preoperatively and 3 and 12 months postoperatively to assess quantity and quality of the quadriceps muscles. All patients underwent tibial plateau operative repair and were made non-weight-bearing for 10 weeks postoperatively then advanced to weight-bearing as tolerated. Functional status assessed via the short musculoskeletal functional assessment (SMFA); knee range of motion [ROM]; vastus medialis oblique [VMO] and vastus lateralis [VL] muscle quantity (axial width, cross sectional area [CSA] and volume) on injured and contralateral limb; VMO, sartorius, semi-membranous and biceps femoris [BF] muscle quality (fat and water content, and proton density fat fraction). All muscle quantitative and qualitative measurements were compared across all time points.

Results: Ten patients were included in the final analysis, 6 males and 4 females, with average age of 43.62 ± 16.3 years. While the VMO and VL axial width and CSA were significantly decreased at 3 months preoperatively, this was not statistically significant. There was no significant difference between any QM quantitative measurements at any time points. There was no difference in fat content, water content or PDFF at any time point for the VMO, sartorius, semi-membranous and BF muscles. Regression analysis also showed no association between 12-month SMFA scores and knee ROM with VMO/VL CSA at 1 year.

Conclusions: QM quantity and quality do not significantly change at 3 months and 1 year postoperatively following tibial plateau fracture surgery.

Level of evidence: Prognostic Level II.

Keywords: Functional outcomes; Magnetic resonance imaging; Quadriceps atrophy; Tibial plateau fracture.

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