"Colossal" breakthrough: the callosal puncture as a precursor to third ventriculostomy.

Area of Science:

• Neurosurgery
• Neurology
• Medical History

Background:

• The Balkenstich method, a corpus callosum puncture for cerebrospinal fluid (CSF) diversion, was proposed in 1908.
• This technique offered continuous CSF diversion without shunting devices but was infrequently documented.
• It represented a novel approach during Harvey Cushing's early neurosurgical practice at Johns Hopkins Hospital.

Observation:

• Harvey Cushing's surgical records from 1896-1912 were reviewed following IRB approval.
• Seven patients undergoing corpus callosum puncture for hydrocephalus were identified.
• The primary indications included obstructive hydrocephalus secondary to intracranial lesions and congenital hydrocephalus.

Findings:

• Corpus callosum puncture was employed to treat hydrocephalus in seven patients.
• Six patients had obstructive hydrocephalus, while one had congenital hydrocephalus.
• Post-operative left-sided weakness occurred in three patients, potentially due to intraoperative motor manipulation injuries.

Implications:

• This study highlights Harvey Cushing's early application of corpus callosum puncture for CSF diversion in obstructive hydrocephalus.
• The findings underscore the procedure's utility and associated risks, including potential neurological deficits.
• This historical review provides insight into early neurosurgical interventions for hydrocephalus management.