In which of the following the 3 point relationship is maintained:
Ans: d (Supracondyar)The 3 point relationship is maintained in supracondylar fracture humerus.The 3 bony points are:Medial epicondyleLateral epicondyleTip of olecranonHead of radius is sometimes considered as the fourth partNormally in an elbow flexed to 90deg. these three bony points form a near isoseles triangle. But in an extended elbow they lie in a straight horizontal line.In supra condylar fracture this relationship is maintained because fracture line is above the condyles.
medial condyle humerus
lateral condyle humerus
olecranon
Supracondylar
Injuries Around Arm & Elbow