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Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum

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Published on: March 19, 2017

Morphological study of lumbricals - a cadaveric study.

Kaur Parminder¹

¹Associate Professor, Department of Anatomy, Christian Medical College , Ludhiana, Punjab, India.

Journal of Clinical and Diagnostic Research : JCDR

|October 3, 2013

Summary

Anatomical variations in hand lumbricals, particularly their insertions, are common, especially in the right hand. Understanding these variations is crucial for surgical procedures involving the hand.

Keywords:

Lumbricals Misplaced insertion Split insertion

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Area of Science:

Anatomy
Human Morphology
Surgical Anatomy

Background:

The intrinsic musculature of the hand, including lumbricals, is vital for grasping and releasing objects.
Variations in hand anatomy can impact surgical outcomes.

Purpose of the Study:

To investigate the morphology and prevalence of variations in hand lumbrical muscles.
To correlate anatomical findings with existing literature and clinical applications.

Main Methods:

Dissection of 50 formalin-embalmed cadaveric hands.
Systematic recording of lumbrical muscle origin, insertion, and nerve supply.
Categorization of variations based on location and type.

Main Results:

Lumbrical origin and nerve supply were consistently normal across all dissected hands.
Variations were most frequently observed in the insertion of the third (32%) and fourth (24%) lumbrical muscles.
Common variations included split and misplaced insertions, predominantly noted in the right hand.

Conclusions:

Hand lumbrical muscles exhibit greater variability in insertion than in origin or nerve supply.
Split insertions were more common in the third lumbrical, while misplaced insertions were more frequent in the fourth lumbrical.
Anatomical variations of lumbrical muscles are more prevalent in the right hand, necessitating careful consideration in surgical planning.