injury to lower medial epiphysis of the humerus before development

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INJURY TO LOWER MEDIAL EPIPHYSIS OF THE HUMERUS BEFORE
DEVELOPMENT OF OSSIFIC CENTRE WITH IPSILATERAL
FRACTURE PROXIMAL
SHAFT HUMERUS – A RARE CASE REPORT
AUTHORS -
DR. RAJESH DULANI
DR.SANDEEP SHRIVASTAV
DR. SUDHANSHU KOTHADIA
DATTA MEGHE INSTITUTE OF MEDICAL SCIENCES UNIVERSITY,SAWANGI(M),WARDHA
INTRODUCTION
• Injury to lower medial epiphysis in children
before the age of 12 is rare. Generally it is
neglected in children below the age of 10 yrs
because epiphysis of trochlea get fused at 9-10
yrs. Fracture of medial condyle is one of this and
it is very rare in children. Very few cases are
reported in literature. Incidence of such type of
injury is 1-2%. Commonest age group for such
type of injury is between 8-12 yrs. This is an intraarticular type IV injury according to Salter- Harris.
CASE REPORT
• Here I m presenting case report of 3 yrs old female child who came
to us with an history of fall on outstretched hand from 15 feet of
height sustained injury to her right elbow and right arm followed by
swelling and pain in right elbow and right arm.
• clinical examination revealed swelling on proximal aspect of right
elbow and right arm, tenderness was present along sswith crepitus,
deformity was there, abnormal mobility was present ,movements
at elbow joint were painful and restricted.
• On radiological examination there was fracture of proxiamal shaft
of humerus with fracture of medial epicondyle of humerus. On
further investigation we done Ultrasonography of elbow and we
found fracture of medial condyle also alongwith fracture of medial
epicondyle.
As this being an intra-articular injury we decided to operate on
this child. Open reduction and internal fixation done with
1.5mm sized 2 k-wires by medial approach.
• Post-operatively this child was given an above elbow cast for one month
as this child was also having fracture of shaft of humerus. The plaster was
removed at the end of one month when there was clinical and radiological
signs of union noted and then physiotherapy started.
This child is now having full range of motion in flexion, extension, pronation and
supination at elbow joint without disability and deformity.
DISCUSSION
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Fractures of medial condyle of humerus in children per se is a rare and cases are
often missed in children due to too many epiphyseal centres.
Lower End of humerus ossifies from four centres. Each for trochlea , capitulum ,
medial condyle , lateral condyle . Ossification begins in the medial epicondyle in 4th
year in female and 6th year in male and fuses around the age of 9 years. Capitulum
is the first to start ossify during first year of life. Centre of medial region of
throchlea appears in 9ht year in female and 10th year in male. Centre for lateral
condyle , capitulum and trochlea fuses around puberty and composite epiphysis
unites with the shaft in the 14th year in female and 16th year in male. Fracture
medial condyle consists of medial epicondyle and medial end of throchlea and
attached fragment of metaphysis. This is a type IV injury according to Salter-Harris.
Mechanism of injury of this fracture is due to fall on apex of flexed elbow ,
outstretched hand where elbow can get valgus stress.
Two types of fracture medial condyle are decribed depending upon the direction
of fracture line , size and position of fractured fragement in children above 8 yrs
when ossification centre for medial condyle has appered.
• TYPE I – Fracture line extends from capitulotrochlear groove to medial supracondylar ridge
just above the medial epicondyle, the resulting
fragment displaced medially but not rotated.
• These type of fractures can be treated
conservatively but with word of caution , regular
radiological assessment should be done to know
that this fragment is not getting displaced.
• TYPE II – Fracture line is similar to in type-I but resulting
fragment is rotated medio-laterally in frontal plane so that
the fracture surface lye underneath the skin on medial side
of elbow while the medial epicondyle displaced distally.
• These type of fractures always need open reduction and
internal fixation as the fractured fragment is displaced and
rotated due to origin of common flexors attached to this
fragment.. Open reduction is done by taking a medial
approach to the elbow, isolation of ulnar nerve,opening the
joint and getting a anatomical reduction of an intraarticular portion of a fracture and fixation of this fragment
by two k-wires.
CONCLUSION
I have presented this case for its rare occurance
and it always needs proper reduction and
internal fixation to get stability and mobility at
the elbow joint. An ultrasonography of elbow
joint should be done in each and every case of
fracture lower end humerus before 8 yrs of
age to avoid missing of fracture medial
condyle in diagnosis.
REFERENCES
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