Correlation analysis between injury patterns of medial patellofemoral ligament and vastus medialis obliquus after acute first-time lateral patellar dislocation

Zhang, Guangying; Zheng, Lei; Shi, Hao; Liu, Wei; Zhang, Li; Qu, Su-hui; Bai, Zhan-Tao; Ding, Haiyan

doi:10.1007/s00167-016-4408-3

Cited by 16 publications

(30 citation statements)

References 38 publications

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“…In a two-year follow-up research, MPFL reconstructive surgery without VMO combined repair had no signi cant effect on the re-dislocation in patients with primary patella dislocation compared with conservative treatment (36), this suggested that MPFL reconstruction combined with VMO repair may produce better postoperative outcome. Zhang et al (20) also suggested that more attention should be paid to VMO, that the patients with complete femoral-side injury in particular. Hence, in the preoperative evaluation, the orthopaedic surgeon should carefully assess the injury conditions of MPFL and VMO, then individualized treatment should be adopted for each patient.…”

Section: Discussionmentioning

confidence: 99%

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Morphological study of vastus medialis oblique in recurrent patellar dislocation based on magnetic resonance images

Shu

Yang

et al. 2020

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Purpose To investigate the morphological parameters of the vastus medialis obliquus (VMO) muscle and delineate its importance in the maintenance of patellofemoral joint stability.Methods The magnetic resonance imaging (MRI) data of 75 knees (54 patients) with recurrent lateral patella dislocation (LPD) and 75 knees (70 patients with similar age, gender and body mass index) were retrospectively analyzed. Five morphological parameters related to VMO (elevation on sagittal plane and coronal plane, cross-sectional area ratio, craniocaudal extent, muscle-fiber angulation,) and two parameters of patella tilt (patella tilt angle, bisect offset ratio) were measured in MRI images, and the types of trochlear in each patient were recorded. Finally, the differences of these parameters between the two groups were analyzed.Results Compared with the control group, the patients with recurrent LPD showed significantly higher in sagittal VMO elevation (10.4 ± 2.3 mm vs 4.1 ± 1.9 mm), coronal VMO elevation (15.9 ± 5.7 mm vs 3.9 ± 3.7 mm), muscle-fiber angulation (35.4 ± 8.0° vs 27.9 ± 6.3°), patella tilt angle (25.9 ± 10.7° vs 9.1 ± 5.2°), and bisect offset ratio values (0.9 ± 0.3 vs 0.5 ± 0.1), and significantly lower in craniocaudal extent (13.7 ± 5.3mm vs 16.7 ± 5.1 mm) and cross-sectional area ratio values (0.07 ± 0.02 vs 0.05 ± 0.02).Conclusions The results showed that the abnormality of VMO were clearly present in recurrent LPD patients compared with normal people, which may be an important factor of patella tilt in LPD patients, so it is necessary to focus on injury condition of VMO during preoperative evaluation.

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Section: Discussionmentioning

confidence: 99%

“…The VMO elevation was measured on sagittal and coronal planes according to Zhang et al' s (20) measurement method. Brie y, the adductor tubercle could clearly be seen in the transverse slice was de ned as the optimally measurable slice, indicated by the blue line ( Fig.…”

Section: Radiographic Measurementsmentioning

confidence: 99%

Morphological study of vastus medialis oblique in recurrent patellar dislocation based on magnetic resonance images

Shu

Yang

et al. 2020

Preprint

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“…Patients were eligible for inclusion if they had suffered an acute, first-time LPD regardless of the injury mechanism. The inclusion criteria were as follows ( 17 18 19 20 21 ):…”

Section: Methodsmentioning

confidence: 99%

“…Using the diagnostic classification criteria from studies of Zhang et al and Balcarek et al ( 17 18 19 20 21 22 23 24 ), the degrees of MPFL injury were divided into partial and complete tears. The manifestations of a partial MPFL tear were defined as thickening and irregularity of the contour, including discontinuity of normal fibers, and intraligamentous or extensive periligamentous edema.…”

Section: Methodsmentioning

confidence: 99%

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The Correlation between the Injury Patterns of the Medial Patellofemoral Ligament in an Acute First-Time Lateral Patellar Dislocation on MR Imaging and the Incidence of a Second-Time Lateral Patellar Dislocation

Zhang

Zhu

et al. 2018

Korean J Radiol

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ObjectiveTo evaluate the correlation between the injury patterns of the medial patellofemoral ligament (MPFL) on magnetic resonance imaging in an acute first-time lateral patellar dislocation (LPD) and incidence of a second-time LPD.Materials and MethodsMagnetic resonance images were prospectively analyzed in 147 patients after an acute first-time LPD with identical nonoperative management. The injury patterns of MPFL in acute first-time LPDs were grouped by location and severity for the analysis of the incidence of second-time LPD in a 5-year follow-up. Independent t tests, chi-square tests and Kruskal-Wallis tests were performed as appropriate.ResultsForty-six cases (46/147, 31.3%) of second-time LPD were present at the 5-year follow-up. Fourteen (14/62, 22.6%) and 31 cases (31/80, 38.8%) were present in the partial and complete MPFL tear subgroups, respectively. Twenty-five cases (25/65, 38.5%), 11 cases (11/26, 42.3%), and 8 cases (8/47, 17%) were present in the isolated femoral-side MPFL tear (FEM), combined MPFL tear (COM), and isolated patellar-side MPFL tear (PAT) subgroups, respectively. Compared with the partial MPFL tears, complete tears showed higher incidence of a second-time LPD (p = 0.04). The time interval between the two LPDs was shorter in the complete MPFL tear subgroup (24.2 months) than in the partial tear subgroup (36.9 months, p = 0.001). Compared with the PAT subgroup, the FEM and COM subgroups showed a higher incidence of a second-time LPD (p = 0.025). The time intervals between the two LPDs were shorter in the FEM and COM subgroups (20.8 months and 19.2 months) than in the PAT subgroup (32.5 months, p = 0.049).ConclusionA complete MPFL tear, isolated femoral-side tear and combined tear in a first-time LPD predispose a second-time LPD.

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Incidence of second-time lateral patellar dislocation is associated with anatomic factors, age and injury patterns of medial patellofemoral ligament in first-time lateral patellar dislocation: a prospective magnetic resonance imaging study with 5-year follow-up

Zhang

Ding

et al. 2018

Knee Surg Sports Traumatol Arthrosc

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Correlation analysis between injury patterns of medial patellofemoral ligament and vastus medialis obliquus after acute first-time lateral patellar dislocation

Abstract: IV.

Cited by 16 publications

References 38 publications

Morphological study of vastus medialis oblique in recurrent patellar dislocation based on magnetic resonance images

Morphological study of vastus medialis oblique in recurrent patellar dislocation based on magnetic resonance images

The Correlation between the Injury Patterns of the Medial Patellofemoral Ligament in an Acute First-Time Lateral Patellar Dislocation on MR Imaging and the Incidence of a Second-Time Lateral Patellar Dislocation

Incidence of second-time lateral patellar dislocation is associated with anatomic factors, age and injury patterns of medial patellofemoral ligament in first-time lateral patellar dislocation: a prospective magnetic resonance imaging study with 5-year follow-up

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