CC-BY-NC-ND 4.0 · IJNS 2018; 07(01): 016-022
DOI: 10.1055/s-0037-1606819
Original Article
Thieme Medical and Scientific Publishers Private Ltd.

Step-Ladder Expansive Cranioplasty: A Study on a Cadaveric Model

Sudip Kumar Sengupta
1  Department of Neurosurgery, Command Hospital (EC) Kolkata, Kolkata, West Bengal, India
,
Sanjeev Tandon
2  Department of Surgery, Command Hospital (EC) Kolkata, Kolkata, West Bengal, India
,
Indra Bahadur Sahi
2  Department of Surgery, Command Hospital (EC) Kolkata, Kolkata, West Bengal, India
› Author Affiliations
Further Information

Publication History

Received: 28 April 2017

accepted after revision: 25 May 2017

Publication Date:
13 October 2017 (eFirst)

Abstract

Notwithstanding the ongoing debates on the necessity, indication, extent, and technique of achieving decompressive hemicraniectomy (DC), any procedure that can deliver the envisaged advantages of a DC, without having to take up the patient for a second surgery in the form of cranioplasty, can be of a great advantage in situations in which DC is being used.

Step-ladder expansive cranioplasty has been proposed as an effective single-step alternative to DC and cranioplasty at a later date, resulting in a fixed but assured volume augmentation. Recently, a case report has emerged documenting a successfully managed case of acute subdural hematoma (SDH) using this technique. In the present in vitro study, an attempt has been made to evaluate different variants of step-ladder expansive cranioplasty constructs using cadaver and clay models.

The findings suggest that the cranial volume expansion in step-ladder expansive cranioplasty is not dependent solely on the patient's skull bone thickness. If the clinical trials prove the procedure to be safe, it can be used at one end, as an alternative to preserving the bone flap at another site prior to cranioplasty, and as a complete one-stage alternative to DC and cranioplasty at a later date, on the other.