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v3.0 Fusion
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Milch / Jakob–Weiss — Lateral Condyle Humerus Fractures

Milch Type I: Fracture line lateral to trochlear groove (through capitellum–trochlear junction) — more stable. Milch Type II: Fracture line extends into trochlea — less stable (risk of displacement). Jakob/Weiss Displacement Staging: I (

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Milch Type I: Fracture line lateral to trochlear groove (through capitellum–trochlear junction) — more stable. Milch Type II: Fracture line extends into trochlea — less stable (risk of displacement). Jakob/Weiss Displacement Staging: I (<2 mm, intact cartilage), II (≥2 mm with intact hinge), III (≥2 mm with rotation/complete displacement). Treatment: Stage I cast; Stage II–III typically ORIF/CRPP to prevent nonunion and lateral overgrowth.
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Question 1

What characterizes a Milch Type I fracture of the lateral condyle of the humerus?

Question 2

In the Jakob-Weiss classification, what does Stage I indicate?

Question 3

What is the primary treatment approach for Jakob-Weiss Stage II and III fractures?

Question 4

What is a critical reason why lateral condyle fractures are challenging to assess radiologically?

Question 5

What is the consequence of inadequate treatment of a lateral condyle fracture?

Question 6

Which of the following is true regarding Milch Type II fractures?

Question 7

For a lateral condyle fracture, which anatomical structure is primarily at risk due to the pull of the common extensor origin?

Question 8

What is the typical age range for children who most commonly experience lateral condyle fractures?

Question 9

What is one reason the fragment in lateral condyle fractures can rotate significantly?

Question 10

Which type of imaging may be necessary to accurately assess the displacement of a lateral condyle fracture?