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Correlation analysis between injury patterns of medial patellofemoral ligament and vastus medialis obliquus after acute first-time lateral patellar dislocation.
- Source :
-
Knee Surgery, Sports Traumatology, Arthroscopy . Mar2018, Vol. 26 Issue 3, p719-726. 8p. 5 Diagrams, 6 Charts. - Publication Year :
- 2018
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Abstract
- <bold>Purpose: </bold>To evaluate the correlation between injury patterns of the medial patellofemoral ligament (MPFL) and vastus medialis obliquus (VMO) after acute first-time lateral patellar dislocation (LPD) in adults.<bold>Methods: </bold>Magnetic resonance imaging (MRI) was prospectively performed in 132 consecutive adults with acute first-time LPD. Images were acquired and evaluated using standardized protocols. Injury patterns of MPFL were grouped by location and severity for analysis of the prevalence of VMO injury.<bold>Results: </bold>MRI demonstrated VMO injury in 63 (47.7%) patients. Twenty (38.5%) and 43 cases (56.6%) were present in partial and complete MPFL tear subgroups, respectively. Compared with partial MPFL tears, complete tears showed a higher prevalence of VMO injury (P = 0.044). The mean coronal (28.5 mm) and mean sagittal VMO elevations (20.7 mm) were higher in the complete MPFL tear subgroup than in the partial tear subgroup (19.8 mm, P = 0.005; 11.9 mm, P < 0.001). No correlations were identified between the prevalence of VMO injury and location subgroups of MPFL injury (n.s.). Mean VMO elevations were higher in isolated femoral-side (FEM) and combined MPFL tear (COM) subgroups (mean coronal VMO elevation of 29 mm and mean sagittal VMO elevation of 20.8 mm in the FEM subgroup; mean coronal VMO elevation of 29.6 mm and mean sagittal VMO elevation of 23.1 mm in the COM subgroup) than in the isolated patellar-side MPFL tear (PAT) subgroup (P = 0.022, P < 0.001) (mean coronal VMO elevation of 20.7 mm and mean sagittal VMO elevation of 10.6 mm).<bold>Conclusions: </bold>Complete MPFL tear predisposes to VMO injury and has a higher elevation of torn VMO after acute first-time LPD in adults. Isolated femoral-side and combined MPFL tears predispose to higher elevation of torn VMO.<bold>Level Of Evidence: </bold>IV. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09422056
- Volume :
- 26
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Knee Surgery, Sports Traumatology, Arthroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 128215083
- Full Text :
- https://doi.org/10.1007/s00167-016-4408-3