Lateral Dislocation of the Patella Following Marmor and Guepar Arthroplasty of the Knee

♦ All children who complain of knee symptoms must be assessed for ipsilateral hip and spine pathology♦ Congenital or persistent lateral dislocation of the patella and obligatory dislocation of the patella have two different clinical presentations: surgical treatment (if required) is often complex♦ The natural history of stable osteochondritis dissecans lesions is generally favourable in a child with open physes.

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MRI of Osteochondral Defects of the Lateral Femoral Condyle: Incidence and Pattern of Injury After Transient Lateral Dislocation of the Patella

American Journal of Roentgenology ◽

10.2214/ajr.05.1471 ◽

2006 ◽

Vol 187 (5) ◽

pp. 1332-1337 ◽

Cited By ~ 66

Author(s):

Timothy G. Sanders ◽

Narayan Babu Paruchuri ◽

Michael B. Zlatkin

Keyword(s):

Femoral Condyle ◽

Lateral Femoral Condyle ◽

Osteochondral Defects ◽

Pattern Of Injury ◽

Lateral Dislocation ◽

Dislocation Of The Patella

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Visualization of osteochondral fragments in the cavity of the knee joint in case of patellar dislocation in children

Российский педиатрический журнал ◽

10.46563/1560-9561-2021-24-5-317-322 ◽

2021 ◽

Vol 24 (5) ◽

pp. 317-322

Author(s):

Olga V. Bozhko ◽

Tolibdzhon A. Akhadov ◽

Ilya A. Melnikov ◽

Dmitry M. Dmitrenko ◽

Tatyana D. Kostikova ◽

...

Keyword(s):

Patellar Dislocation ◽

Outer Edge ◽

Lateral Condyle ◽

Mri Scan ◽

Lateral Dislocation ◽

Observation Methods ◽

Lateral Patellar Dislocation ◽

Extent Of Damage ◽

Ct And Mri ◽

Dislocation Of The Patella

The objective was to assess the capabilities of MRI and CT in visualizing free bone and cartilage fragments in the knee cavity after lateral dislocation of the patella. Materials and methods. CT and MRI were performed in 220 patients, including 127 girls and 93 boys aged 12 to 18 years (mean age 14.5 years), with acute lateral patellar dislocation. Results. Lateral dislocation of the patella in 25% of cases led to the appearance of osteochondral fragments. CT scan revealed and confirmed osteochondral fragments surgery in 55 people (100%), MRI scan - in 50 people (90%). The sites of the detachment of the osteochondral fragments were: a medial facet of the patella in 22 (38.8%), the outer edge of femur lateral condyle in 33 (58.2%), t patella and lateral condyle of the femur in 2 patients (3%). Free cartilage fragments not detected by CT were detected by MRI in 2 patients. Conclusion. Patellar dislocation is an injury that is likely to require surgery. The volume of osteochondral and soft tissue lesions can be established with the maximum degree of probability by MRI while detecting small osteochondral fragments is most reliable with CT. Combining these two observation methods provides the complete possible information about the extent of damage, which allows timely resolution of treatment tactics.

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