Title: A Morphological & Topographical Study of Nutrient Foramina in Dry Human Clavicles of Rajasthan State

Authors: Nand Lal, Puneet Joshi, Sakshi Mathur

 DOI:  https://dx.doi.org/10.18535/jmscr/v6i4.169

Abstract

Introduction: Human  beings  are  bestowed  with  the  power  of  bipedal  locomotion  and  the  clavicle  acts  as  a  strut  to  allow  the  free  movement  of  the  upper  limb  away  from  the  chest  wall.2

The clavicle  (collar  bone) is an unusual long  bone which has many unique embryologic features.14

Aims & Objectives: The  main  aim  of  this  study  is  to  find  variation  in  number  and  position  of  nutrient  foramen  of  the  human  clavicle  which   enlightens  the  operating  surgeon  in  the  free  vascularised  bone  grafts  and  in  microsurgical  vascularised  bone  transplantation.

From  recent  hypothesis  it  has  been  confirmed  that  vascularized bone and joint allograft  survival  depends  strongly  on  the  blood  supply  of  bone.17 

Material & Methods: Our  study  comprised  of  50  (25  Right  sided  &  25  left  sided) dry  human  clavicles  collected  irrespective  of  age  and  sex, obtained  from  department  of Anatomy  at  S.M.S. Medical  College  &  Hospital  Jaipur.

Results & Conclusions: In  our  Present  study  Nutrient  foramina  was  present  in  47(97%)  clavicles. Out of which  single  foramina in  34(68%) and  double foramina  in  13(26%). Absence of nutrient foramina were  found  in 3(6%) clavicles.

Maximum number  was  present  in  the  middle  third  and  on  the  posterior  surface of  38(76%) bones. 

Majority  of  the  formina  were  directed  towards  the  acromial end which  showed  that  sterna  end  of  the  clavicle  was  the   growing  End  and  followed  the  laws  of  ossification.  Only  two  foramina  were    directed  towards  sterna  end.

The  knowledge  of  the  nutrient  foramina  is  essential  in  some  surgical procedures  like  placement  of  internal  fixation,  in  vascularised bone  graft  and  also  to  preserve  arterial  supply  during  radiation  therapy.

Keywords: Nutrient foramina, clavicle, bone grafting.

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