Influence of posterior lateral femoral condyle geometry on patellar dislocation

2015 ◽  
Vol 135 (11) ◽  
pp. 1503-1509 ◽  
Author(s):  
Dominic Gillespie ◽  
Daniel Mandziak ◽  
Colin Howie
Keyword(s):  
Patellar Dislocation ◽  
Femoral Condyle ◽  
Lateral Femoral Condyle

scholarly journals Characteristics of Osteochondral Fractures Caused by Patellar Dislocation

2021 ◽  
Vol 9 (1) ◽  
pp. 232596712097464
Author(s):  
Mikko Uimonen ◽  
Ville Ponkilainen ◽  
Juha Paloneva ◽  
Ville M. Mattila ◽  
Heikki Nurmi ◽  
...  
Keyword(s):  
Knee Joint ◽  
Patellar Dislocation ◽  
Femoral Condyle ◽  
Case Series ◽  
Recurrent Dislocation ◽  
Lateral Femoral Condyle ◽  
Recurrent Patellar Dislocation ◽  
Significant Difference ◽  
Mri Scans ◽  
Osteochondral Fractures

Background: Literature describing the anatomic characteristics of osteochondral fractures (OCFs) in the knee joint after patellar dislocation is scarce. Purpose: To describe the patterns of OCFs in the knee joint after acute or recurrent patellar dislocation in a sample of patients from 2 orthopaedic trauma centers. Study Design: Case series; Level of evidence, 4. Methods: In this multicenter study, all patients who had International Classification of Diseases, 10th Revision, diagnostic codes S83.0 and M22.0 between 2012 and 2018 were screened. Of the 2181 patients with clinically diagnosed patellar dislocation, 1189 had undergone magnetic resonance imaging (MRI). Patients with diagnosed patellar dislocation and osteochondral fragment verified on MRI scans were included. Demographic and clinical data were collected from electronic patient records. OCF location and size were assessed from MRI scans. Results were further compared in subgroups by sex, skeletal maturity, and primary versus recurrent patellar dislocation. Results: An OCF was detected in 134 patients with injured knees, all of whom were included in the final analysis. It occurred in the patella in 63% of patients, in the lateral femoral condyle in 34%, and in both locations in 3%. The median OCF size was 146 mm2 (interquartile range, 105-262 mm2). There was no statistically significant difference in OCF size between patellar and lateral femoral condyle fractures. Patellar OCFs were more frequent in female than male patients ( P = .009) and were larger after primary than recurrent dislocation ( P = .040). Conclusion: OCFs were mainly located in the medial facet of the patella and in the lateral femoral condyle, with these locations accounting for approximately two-thirds and one-third of all OCFs, respectively. Proportion of patellar OCF was higher in female than in male. Patellar OCFs may be larger after primary than recurrent dislocation.

scholarly journals Two Patients with Osteochondral Injury of the Weight-Bearing Portion of the Lateral Femoral Condyle Associated with Lateral Dislocation of the Patella

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Shuji Nakagawa ◽  
Yuji Arai ◽  
Hiroaki Inoue ◽  
Satoru Atsumi ◽  
Shohei Ichimaru ◽  
...  
Keyword(s):  
Patellar Dislocation ◽  
Femoral Condyle ◽  
Weight Bearing ◽  
Lateral Femoral Condyle ◽  
Bearing Surface ◽  
Lateral Dislocation ◽  
Osteochondral Injury ◽  
Osteochondral Fragment ◽  
Femoral Groove ◽  
Dislocation Of The Patella

Complications of patellar dislocation include osteochondral injury of the lateral femoral condyle and patella. Most cases of osteochondral injury occur in the anterior region, which is the non-weight-bearing portion of the lateral femoral condyle. We describe two patients with osteochondral injury of the weight-bearing surface of the lateral femoral condyle associated with lateral dislocation of the patella. The patients were 18- and 11-year-old females. Osteochondral injury occurred on the weight-bearing surface distal to the lateral femoral condyle. The presence of a free osteochondral fragment and osteochondral injury of the lateral femoral condyle was confirmed on MRI and reconstruction CT scan. Treatment consisted of osteochondral fragment fixation or microfracture, as well as patellar stabilization. Osteochondral injury was present in the weight-bearing portion of the lateral femoral condyle in both patients, suggesting that the injury was caused by friction between the patella and lateral femoral condyle when the patella was dislocated or reduced at about 90° flexion of the knee joint. These findings indicate that patellar dislocation may occur and osteochondral injury may extend to the weight-bearing portion of the femur even in deep flexion, when the patella is stabilized on the bones of the femoral groove.

scholarly journals Osteochondral fracture in weight-bearing portion of lateral femoral condyle associated with patellar dislocation

2017 ◽  
Vol 2017 (7) ◽  
Author(s):  
Mahmoud Jabalameli ◽  
Abolfazl Bagherifard ◽  
Hosseinali Hadi ◽  
Salman Ghaffari
Keyword(s):  
Patellar Dislocation ◽  
Femoral Condyle ◽  
Weight Bearing ◽  
Lateral Femoral Condyle ◽  
Osteochondral Fracture

Osteoarthritis of the patella, lateral femoral condyle and posterior medial femoral condyle correlate with range of motion

2013 ◽  
Vol 21 (11) ◽  
pp. 2584-2589 ◽  
Author(s):  
Takashi Suzuki ◽  
Sayaka Motojima ◽  
Shu Saito ◽  
Takao Ishii ◽  
Keinosuke Ryu ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Femoral Condyle ◽  
Medial Femoral Condyle ◽  
Lateral Femoral Condyle
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