Anatomical factors influencing patellar tracking in the unstable patellofemoral joint

Biyani, Rahul; Elias, John J.; Saranathan, Archana; Feng, Hui; Guseila, Loredana M.; Morscher, Melanie A.; Jones, Kerwyn C.

doi:10.1007/s00167-014-3195-y

Cited by 73 publications

(93 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The subjects with PFP demonstrated a greater magnitude compared with the subjects without PFP at all knee flexion angles with the largest difference between groups was evident at full extension. The subjects with and without PFP demonstrated an overall pattern of increasing lateral tilt as the knee extended, which was consistent with other authors (Biyani et al 2014;Teng et al 2014). …”

Section: Predictors Of Patellofemoral Pain Applying Full Weight Bearisupporting

confidence: 92%

Predictors of Patellofemoral Pain Applying Full Weight Bearing Kinematic MRI

Brazaitis

Tamošiūnas

Tutkuvienė

et al. 2015

Central European Journal of Sport Sciences and Medicine

View full text Add to dashboard Cite

abstract. Purpose. To determine the associations among PFM, trochlea groove morphology, femoral and patellar rotation and to determine which measures best predict patellofemoral pain (PFP). Material & Methods. Knees of 51 female patients with PFP and 26 healthy female volunteers as control group were analysed with kinematic magnetic resonance imaging and full weight-bearing. The bisect offset (BSO), patellar tilt angle (PTA), femoral rotation angle (FRA), patellar rotation angle (PRA) were measured in steps of 10° between 0° to 50° of knee flexion. Static measures of Insall-Salvati ratio (ISR), sulcus angle (SAB & SAc) and lateral trochlear inclination at bone and cartilage levels (LTIB & LTIc) were performed and compared. Results. The SAB & SAc were higher and the LTIB & LTIc were lower in patients compared to volunteers. BSO, PTA, PRA and medial FRA were higher in the PFP group at all flexion angles. A multiple logistic regression analysis demonstrated that increase of FRA and SAB by 1° increased the likelihood of PFP 5.6 times and 1.6 times respectively, decrease of PRA by 1° decrease PFP likelihood by 1.7 times. conclusion. These results revealed FRA, SAB and PRA to have best predictive value for patellofemoral pain. current findings can help to assess the complexity of predisposing factors for PFP in practice.

show abstract

Section: Predictors Of Patellofemoral Pain Applying Full Weight Bearisupporting

confidence: 92%

Predictors of Patellofemoral Pain Applying Full Weight Bearing Kinematic MRI

Brazaitis

Tamošiūnas

Tutkuvienė

et al. 2015

Central European Journal of Sport Sciences and Medicine

View full text Add to dashboard Cite

show abstract

“…The affect ed knee demonstrated greater patellar displacement at low flexion angles. The average bisect offset index in the painful knee was 7% at full extension, which is in agreement with the other authors, who investigated affected and pain free knees in different individuals (12,13). The greatest bisect offset index in the painful knee at full extension was 92%, which might be influenced by weak passive medial stabilizers, namely the medial patellar retinaculum.…”

Section: Discussionsupporting

confidence: 91%

“…Our results confirmed the data of other investigators who have reported greater bisect offset index for the affected knee as compared to the pain-free knee in kinematic weight-bearing MRI examinations in different individuals (11,12). Both knees have demonstrated a similar increasing bisect offset from 50° to 30° of flexion, while diverging at low angles of flexion, especially at full extension.…”

Section: Discussionsupporting

confidence: 91%

See 1 more Smart Citation

Patellofemoral joint biomechanics in the females with anterior knee pain applying full weight bearing kinematic MRI

Brazaitis¹,

Tamošiūnas²,

Tutkuvienė³

2015

AML

View full text Add to dashboard Cite

Purpose. The aim of the study was to evaluate biomechanics of the patellofemoral joint using full weight bearing kinematic MRI. We postulated that females with unilateral PFP might have greater medial femoral rotation in comparrison to the contralateral knee, also greater lateral patella tilt and displacement.Methods. Forty four females aged 20-40 years with unilateral PFP were included in the study. The kinematic MRI examination was performed with a 1.5 T MRI unit. Full-weight bearing was used. Sagittal and axial images of the patellofemoral joint were acquired with a transmit-receive surface body coil. The study parameters, i. e. bisect offset, patella tilt angle, medial femoral rotation, patellar rotation at 0, 10, 20, 30, 40, 50° of flexion, were measured for both knees.Results. Statistically significant changes were confirmed for greater bisect offset at all angles of flexion. The patella tilt angle increased steadily throughout full extension, but there was no significant difference in the tilt angle at 50° flexion. Greater medial femoral rotation was observed at all degrees of flexion, while patellar rotation showed no difference.Conclusions. Our study has confirmed the growing body of literature, theorizing that the primary cause of PFP pain is altered femur dynamics under relatively stable patella.

show abstract

“…3,4,11,12,15,16 Despite its extensive use, in cases where the TT-TG distance is <20 mm, it may not be able to explain other cases seen to have instability. 17,18 In the current study, it was attempted to answer the following questions: (1) Are metric parameters alone sufficient in the evaluation of patellar instability? (2) Can angular parameters be defined which will reveal the rotational movement of the tuberositas tibia on the tibia shaft, additional to the metric parameters?…”

Section: Introductionmentioning

confidence: 99%

Are metric parameters sufficient alone in evaluation of the patellar instability? New angular measuring parameters

Devecı

Çankaya

Yılmaz

et al. 2017

J Orthop Surg (Hong Kong)

View full text Add to dashboard Cite

Purposes: When the evaluation of patellar instability is examined from the aspect of the conical-cylindrical anatomy of the tibia, metric measurement parameters such as the tuberositas tibia (TT)-trochlear groove (TG) and patellar tendon (PT) insertion-trochlear groove (TG) distances are not sufficient. We asked whether defined angular parameters reveal the rotational movement of the tuberositas tibia on the tibia shaft, additional to the metric parameters and there is a correlation between the metric and angular parameters. Methods: 19 patients with patellar instability and 22 patients without patellar instability were evaluated. For all patients, two angle and three length parameters were evaluated on the slices taken. Evaluations were made of the TT-TG, the midpoint of the PT insertion-TG distances, the anatomic midpoint of the dome of the TT-TG, the TG-PT angle, and the TG-dome angle (DA). The Pearson correlation test was used for the statistical analysis of correlations between groups. Results: A statistically significant increase was determined in the patellar instability group in the TG-DA and TG-PT angle values compared to the group without patellar instability (p < 0.05). In both groups, a positive and strong correlation was determined between the TT-TG and the TG-PT and dome of the TT-TG distances, but no statistically significant correlation was determined between the tuberositas TT-TG and TG-PT angle and TG-DA. Conclusion: Metric parameters may not be sufficient alone in the evaluation of patellar instability. Metric parameters should be supported by additional angular parameters which reveal the rotational movement of the TT on the tibia shaft.

show abstract

Anatomical factors influencing patellar tracking in the unstable patellofemoral joint

Abstract: Diagnostic study, Level II.

Cited by 73 publications

References 37 publications

Predictors of Patellofemoral Pain Applying Full Weight Bearing Kinematic MRI

Predictors of Patellofemoral Pain Applying Full Weight Bearing Kinematic MRI

Patellofemoral joint biomechanics in the females with anterior knee pain applying full weight bearing kinematic MRI

Are metric parameters sufficient alone in evaluation of the patellar instability? New angular measuring parameters

Contact Info

Product

Resources

About