Medial patellofemoral ligament (MPFL) reconstruction technique using an epiphyseal femoral socket with fluoroscopic guidance helps avoid physeal injury in skeletally ... View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-03-09

AUTHORS

Tyler J. Uppstrom, Meghan Price, Sheena Black, Elizabeth Gausden, Jonathan Haskel, Daniel W. Green

ABSTRACT

PURPOSE: The purpose of this study was to assess the physeal safety associated with the use of an epiphyseal femoral socket for paediatric medial patellofemoral ligament (MPFL) reconstruction. METHODS: Fifty-four knees in 49 skeletally immature patients underwent physeal-sparing MPFL reconstruction performed by 1 surgeon at a tertiary care academic medical centre from 2007 to 2016. A femoral socket distal to the femoral physis was used for graft fixation in all the patients. To assess physeal safety, all included patients either had post-operative MRIs of the operative knee or standing hip-to-ankle radiographs. Physeal safety was assessed on MRI, and the distance between the femoral socket relative to the physis was measured at both the aperture and the end of the socket. Development of lower limb angular deformities and/or limb length discrepancy (LLD) was evaluated using post-operative standing hip-to-ankle radiographs, patient records, and clinical assessments. RESULTS: The mean age at time of surgery was 13.3 ± 1.6 years. The median length of radiographic follow-up was 2.2 years (range 1.0-5.7 years). At most recent clinical follow-up, five patients (9.3%) had recurrent patellar instability, with three patients (5.6%) undergoing subsequent tibial tubercle osteotomy or revision MPFL reconstruction. There was no statistically significant difference in leg length between operated and non-operated extremities (n.s.). There was no statistically significant difference between non-operated and operated mMPTA (n.s.) and mLDFA (n.s.) measurements. On post-operative MRI, there was no evidence of physeal arrest. The median distance from the physis to the socket at the aperture and distal end of the femoral socket were 5.9 mm (range 1.9-12) and 7.1 mm (1.3-12.4), respectively. CONCLUSION: These results demonstrate that with fluoroscopic guidance, placing the femoral socket distal to the distal femoral physis is an effective method for avoiding physeal injury and subsequent growth disturbances in children with patellar instability. Clinically, this information is essential in optimal surgical management of these patients, as this technique allows for femoral fixation of the MPFL reconstruction graft within the epiphysis while also preserving normal growth. LEVEL OF EVIDENCE: Level IV-case series. More... »

PAGES

1-7

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00167-019-05412-7

DOI

http://dx.doi.org/10.1007/s00167-019-05412-7

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1112673343

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30852626


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