Incidence and management of secondary deformities after megaendoprosthetic proximal femur replacement in…

Cohort studyArchives of orthopaedic and trauma surgery· Jun 2024

Incidence and management of secondary deformities after megaendoprosthetic proximal femur replacement in skeletally immature bone sarcoma patients.

Wiebke K Guder, Nina M Engel, Arne Streitbürger … Jendrik Hardes

Orthopedic OncologyCohort studyQ1IF 2.8

Most skeletally immature patients with intraarticular proximal femur megaendoprosthesis developed secondary hip dysplasia in this retrospective series.

Incidence and management of secondary deformities after megaendoprosthetic proximal femur replacement in skeletally immature bone sarcoma patients.

Wiebke K Guder … Jendrik Hardes

Archives of orthopaedic and trauma surgery · Jun 2024 · Q1 in Orthopedics

Background

Megaendoprosthetic reconstruction of bone defects in skeletally immature patients has led to the development of unique complications and secondary deformities not observed in adult patient cohorts.

Methods

Retrospective analysis of 14 patients who underwent primary and/or repeat reconstruction/surgery with a megaendoprosthetic proximal femur replacement between 2018 and 2022.

n = 14 patients

58.3%

Results

58.3%

Secondary hip dysplasia was identified in 7 of 12 intraarticular resections and reconstructions.

n = 14 patients

More results

Mean patient age was 9.1 years (range 4-17 years).

Stress shielding was observed in 71.4%.

Hip dislocation was the most frequent complication (50%).

The incidence of secondary hip dysplasia and concomitant genu valgum was 42.9% (n = 3/7).

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Conclusion · 1 of 2

Patients aged < 10 years were prone to develop secondary hip dysplasia and genu valgum following proximal femur replacement in this study. Management of secondary deformities should depend on remaining skeletal growth.

Conclusion · 2 of 2

Stress shielding was observed in almost all skeletally immature patients.

Incidence and management of secondary deformities after megaendoprosthetic proximal femur replacement in skeletally immature bone sarcoma patients.

Incidence and management of secondary deformities after megaendoprosthetic proximal femur replacement in skeletally immature bone sarcoma patients.

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