2. ANATOMY
Lateral condyle of the humerus is a
large, tuberculated eminence located at
the distal part of humerus.
It extends medially to form main part of
lower articular end of humerus.
It gives attachment to:
Radial collateral ligament
Supinator
Forearm extensors.
3. LATERAL CONDYLE
HUMERUS FRACTURE
Comprises 17% of distal humerus fractures
Peak age is 6 years
It is Salter – Harris type IV physeal injury
4. MECHANISM OF INJURY
Fall on the extended upper extremity
with additional varus force (Push off
theory)
Avulsion injury due to pull of strong
wrist extensors
6. CLASSIFICATION
MILCH
Type I – fracture line lateral to the
trochlea & into the capitellar-trochlear
groove
It represents a Salter-Harris type IV
fracture
Type II – fracture line extends into the
apex of the trochlea
More common
It represents a Salter-Harris type II
fracture
Elbow is unstable
9. TREATMENT
Undisplaced fracture – above elbow slab
or cast with elbow at 90deg flexion and
wrist extended for 2 weeks, followed by
physiotherapy.
Displaced fracture – open reduction and
internal fixation with pins or screws and
limb immobilized for 3-4weeks; followed
by physiotherapy.
10. COMPLICATION
Non-union – neglected fracture with rotation and
displacement of the condyle
Valgus deformity of elbow, tardy ulnar nerve palsy
Malunion
Growth arrest
Elbow stiffness