Patella–patellar tendon angle and lateral patella–tilt angle decrease patients with chondromalacia patella

Damgacı, Lale; Özer, Hamza; Duran, Semra

doi:10.1007/s00167-020-06065-7

Cited by 14 publications

(21 citation statements)

References 22 publications

(72 reference statements)

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“…The previous researches have analyzed the in uence of patellofemoral malalignment on chondromalacia patella or patellar cartilage defects [5,8,10,12,17,23]. Duran S et al [10] suggested that abnormal trochlear morphology was increased the risk of chondromalacia patella in women and, in particular, women with a shallow trochlea and/or attened lateral trochlea, this conclusion was similar to the result of Tuna BK et al [5].…”

Section: Discussionsupporting

confidence: 57%

The SP-ET Index is a New Index for Assessing The Vertical Position of Patella

Jia

Qiu

Sheng

et al. 2021

Preprint

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Background. There were some parameters in previous studies did not better reflect the vertical position of the patella relative to the femoral trochlear. The purposes of this study were to assess the value of the most superior point of patella - entrance of femoral trochlea distance ratio (SP-ET index) as a newer index in defining the vertical position of patella relative to the trochlea, correlate it with the Insall-Salvati ratio, and investigate the effect of the new index on chondromalacia patella. Methods. A total of 99 knees of 77 patients with chondromalacia patella were retrospectively analyzed using magnetic resonance imaging (MRI) data from our database. The Insall–Salvati ratio and SP-ET index were measured on MR images. There were 99 knees just with meniscus rupture were enrolled as the control group. The two parameters of the chondromalacia patella were compared with those of the control group. Results. The Insall–Salvati ratio and SP-ET index in the chondromalacia patella group were significantly higher than those in the control group (p < 0.001). The SP-ET index showed a moderate positive correlation with the Insall–Salvati ratio (r=0.307, p<0.001). Receiver operating characteristic (ROC) analysis showed the diagnostic efficiency of the SP-ET index was better than that of the Insall–Salvati ratio in patients with chondromalacia patella. Conclusion. The SP-ET index may be a useful complement parameter to define the vertical position of the patella relative to the femoral trochlear. Increased of the SP-ET index may be an important risk factor for chondromalacia patella.

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Section: Discussionsupporting

confidence: 57%

The SP-ET Index is a New Index for Assessing The Vertical Position of Patella

Jia

Qiu

Sheng

et al. 2021

Preprint

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“…In a study examining chondromalacia patellar and joint morphological measurements in patients with anterior knee pain, in contrast to our results, no significant correlation was found between trochlear measurements and chondromalacia stage in addition to patellar morphological measurements (18). In another study, it was found that the trochlear sulcus angle and trochlear depth as well as female sex were associated with the stage of chondromalacia (4). In the present study, there was no significant difference in sex distribution between the case and control groups, but female sex was more common among patients with advanced stage chondromalacia.…”

Section: Discussionmentioning

confidence: 98%

“…The relationship of the patella-another component of the joint-with the femur and patellar-shaped abnormalities may also affect the relationship with the joint. There are conflicting data regarding the effects of shape abnormalities of the structures forming the PF joint on patellar chondromalacia in the relevant literature (1,(3)(4)(5).…”

Section: Introductionmentioning

confidence: 99%

Relationship between patellofemoral joint morphology and chondromalacia patella

ÖZTÜRK

Güngör

2023

Acta Radiol

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Background For the normal functioning of the patellofemoral joint (PF), the relationship between the patella and the trochlear groove must be compatible. Purpose To investigate the relationship between patellofemoral joint morphology (PFM) and patellar chondromalacia. Material and Methods Overall, 136 knees of patients aged 20–55 years examined between March 2020 and March 2021 were included in this study. In all patients, trochlear sulcus angle, trochlear sulcus depth, trochlear facet asymmetry, patella alta (Insall–Salvati [IS] index), and patellar facet asymmetry were measured. Of these cases, 66 knees with an abnormality detected in any of the measurements for PFM were included in the case group. Moreover, 70 knees with demonstrating normal PFM measurements were included in the control group. Results The incidence and grade of chondromalacia was higher in the case group than in the control group ( P < 0.001). Between the patients with and without chondromalacia trochlear sulcus angle (mean = 138.25° ± 10.02° vs. 132.58° ± 7.24°; P = 0.001), IS index (mean = 1.25 ± 0.21 vs. 1.16 ± 0.15; P = 0.014), patellar facet asymmetry (mean = 0.77 ± 0.09 vs. 0.73 ± 0.12; P = 0.039), trochlear sulcus depth (mean = 5.39 ± 1.42 mm vs. 6.27 ± 1.04 mm; P < 0.001), and trochlear facet asymmetry (mean = 0.67 ± 0.11 vs. 0.71 ± 0.09; P = 0.023) measurements, there was a significant difference. Conclusion The presence of at least one of the measures indicating pathology in PFM is associated with the presence and severity of chondromalacia.

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“…The previous researches have analyzed the influence of patellofemoral malalignment on patellar cartilage lesions or patellar cartilage defects [ 8 , 11 , 13 , 15 , 20 , 26 ]. Overall, patellofemoral malalignment and structural abnormalities of the patellofemoral joint led to pathologic pressure on the patellofemoral joint might be an important pathogenesis of patellar cartilage lesions [ 20 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

The SP-ET index is a new index for assessing the vertical position of patella

Yuan

Qiu

et al. 2022

Insights Imaging

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Background Some parameters in previous studies did not better reflect the vertical position of the patella relative to the femoral trochlear. This study aimed to assess the value of the most superior point of patella-entrance of femoral trochlea distance ratio (SP-ET index) as a newer index in defining the vertical position of patella relative to the trochlea, correlate it with the Insall–Salvati ratio, and investigate the effect of the new index on patellar cartilage lesions. Methods A total of 99 knees of 77 patients with patellar cartilage lesions were retrospectively analyzed using magnetic resonance imaging (MRI) data. The Insall–Salvati ratio and SP-ET index were measured on MR images. Ninety-nine knees just with meniscus rupture were enrolled as the control group. The two parameters of the patellar cartilage lesions were compared with those of the control group. Results The Insall–Salvati ratio and SP-ET index in the patellar cartilage lesions group were significantly higher than those in the control group (p < 0.001). The SP-ET index showed a moderate positive correlation with the Insall–Salvati ratio (r = 0.307, p < 0.001). Receiver operating characteristic (ROC) analysis showed that the diagnostic efficiency of the SP-ET index was better than that of the Insall–Salvati ratio in patients with patellar cartilage lesions. Conclusion The SP-ET index may be a useful complement parameter to define the vertical position of the patella relative to the femoral trochlear. Increased SP-ET index may be an important risk factor for patellar cartilage lesions.

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Patella–patellar tendon angle and lateral patella–tilt angle decrease patients with chondromalacia patella

Cited by 14 publications

References 22 publications

The SP-ET Index is a New Index for Assessing The Vertical Position of Patella

The SP-ET Index is a New Index for Assessing The Vertical Position of Patella

Relationship between patellofemoral joint morphology and chondromalacia patella

The SP-ET index is a new index for assessing the vertical position of patella

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