POSTERIOR CONDYLAR CANAL VARIATION IN EAST INDIAN SKULL
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2018, Vol 7, Issue 43
Abstract
BACKGROUND Posterior condylar canal, a foramen present within the condylar fossa, carries emissary vein which connects sigmoid sinus with the occipital vein, nerves supplying the dura mater of posterior cranial fossa and meningeal branches of the occipital artery. Injuries to these neurovascular bundles may occur during dissection involved in skull base surgeries, thereby requiring detailed knowledge of anatomical variations. Despite being the largest emissary foramen of the posterior cranial fossa, there are reports of rare absence of this canal. Both unilateral and bilateral posterior condylar canal have also been reported. Aim of the study was to observe the variations of posterior condylar canal in dry adult skulls of East Indian population. MATERIALS AND METHODS The study was conducted on 35 dry adult skulls without asymmetry or deformity collected from the Department of Anatomy, Jawaharlal Nehru Institute of Medical Sciences (JNIMS) and Regional Institute of Medical Sciences (RIMS), Manipur. The study was conducted to evaluate the frequency of the presence of posterior condylar canal unilaterally, bilaterally or its absence using a malleable metallic probe, magnifying lens and measuring tape. RESULTS In the present study, out of 35 skulls studied, the posterior condylar foramen was present in 33 (94.3%) cases and absent in 2 (5.7%) cases. Among the 94.3% cases with the foramen, 31.3% were present bilaterally and 62.9% were present unilaterally (Right Side 34.3% and Left Side 28.6%). No skull exhibited multiple foramina. CONCLUSION There can be great anatomical variations in the posterior condylar canal such as absence- unilateral or bilateral. Unilateral presence is encountered more commonly, amongst which the right side patency predominates. Knowledge of such variations will provide valuable information to surgeons while carrying out operative procedures involving craniocervical region.
Authors and Affiliations
Keisam Anupama Devi, Sanjenbam Sonali Devi
Keywords
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- EP ID EP549018
- DOI 10.14260/jemds/2018/1033
- Views 107
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