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A Unique Case of Pure Bilateral Lambdoid Craniosynostosis and Progression to Mercedes-Benz Syndrome Following Spring
Sebastian Kuriakose1, Yasmine Soubra2, Sarah Anne Frommer3
1The University of Texas at Austin, Austin, TX, USA.
Abstract:
We report a case of a 3-month-old female with isolated bilateral lambdoid craniosynostosis treated by suturectomy with cranial springs, who later demonstrated unexpected sagittal fusion. The patient presented with bilateral lambdoid and mendosal fusion producing a distinctive posterior vault deformity. Springs placed at suturectomy were removed five months later. Segmented CT analysis revealed intracranial volume expansion from 727.4 cm3 pre-op to 1371.9 cm3 post-removal, with minimal blood loss and uncomplicated recovery. Post-removal imaging showed complete sagittal synostosis, suggesting either a delayed manifestation of Mercedes-Benz pattern synostosis or a mechanically induced secondary synostosis due to springs, warranting further investigation.

