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Year : 2018  |  Volume : 13  |  Issue : 4  |  Page : 1011-1017

Moulded osteomyofascial pedicled split (MOPS) craniotomy flap in reconstruction of anterior cranial fossa defects: Pilot study of a novel technique

1 Department of Neurosurgery, Government Medical College, Kottayam, Kerala, India
2 Department of Plastic Surgery, Government Medical College, Kottayam, Kerala, India

Correspondence Address:
Vinu Venu Gopal
Associate professor, Department of Neurosurgery, Government Medical College, Kottayam, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ajns.AJNS_23_17

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Introduction: Anterior cranial fossa (ACF) defects still remains a reconstructive challenge to neurosurgeons due to the difficult location, inaccessibility, and unfavorable vascular anatomy. Usual reconstructive methods reported complications such as recurrent cerebrospinal fluid leak due to bone resorption and tissue breakdown. This is mainly due to the avascularity of the bone graft and inability to provide bony structural support for the skull base. An ideal reconstructive modality should provide a rigid bony support to prevent brain herniation as well as ensure a water tight barrier between sinonasal tract and intracranial compartment. Methodology: Hence, we thought of a novel technique of taking the outer table of the primary craniotomy flap with its intact myofascial pedicle and moulded it with multiple osteotomies (moulded osteomyofascial pedicled split (MOPS) craniotomy flap) to fit into uneven ACF defects. Advantages of our flap include (1) It is a pedicled vascularized bone flap. (2) It is taken from primary craniotomy flap; hence, no separate craniotomy is required. (3) The inner table is intact and leaves no secondary calvarial bone defect on the donor site. (4) Osteoplastic flap is moulded to fit into the defect, thus providing good contour. Results: MOPS flap was used in five patients with ACF defects due to varied etiologies such as encephalocele defect, frontal mucocele, skull base meningioma, and complex naso ethmoid fracture. Age of the patients included in the study varied from 21 to 60 years. Male:female ratio was 4:1. ACF defects were reconstructed using MOPS flap in all cases. There were no postoperative complications and 1-month postoperative computerized tomography scan showed no evidence of bone resorption with acceptable cosmesis. Conclusion: MOPS craniotomy flap provides a novel, easily mastered, and cost-effective technique with minimal complication in reconstruction of complex ACF defects with acceptable esthetic and functional outcome.

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