*2.5.3.1 Supracondylar process syndrome*

**Anatomy:** The supracondylar process is a beak-shaped bone spur located on the anteromedial face of the distal part of the humerus. This congenital variation does not cause any symptoms in many people. It is located approximately 4 to 8 cm above

#### **Figure 6.**

*The schematic drawing of median nerve between the Struther's ligament and the bony prominence (supracondylar process) in the distal humerus.*

### *Demyelination Disorders*

the medial epicondyle. The Struther's ligament, a fibrous band, is stretched between the tip of this bone spur and the medial epicondyle. The Struther's ligament, a fibrous band, is stretched between the tip of this bone spur and the medial epicondyle. The neurovascular structures that are most compressed in this entrapment site are the median nerve and the brachial artery (**Figure 6**) [32, 33].

**Description:** It is a condition characterized by the compression of the median nerve between the Struther's ligament and the bony prominence in the distal humerus [32–34].

**Causes:** Congenital bone spur in beak-shaped form located in the distal part of the humerus called the supracondylar process [32, 33].

**Clinical features:** Symptoms are vascular and neuronal. Vascular compression symptoms are related to the brachial artery. Ischemic pain, forearm claudication and cyanosis may be seen. Pain, muscle wasting and numbness of the affected hand are symptoms that can be seen in nerve compression. Heavy manual work, repetitive activities and during flexion and pronation of the forearm may cause an increase in symptoms [34]. Prolonged median nerve compression may cause weakness and atrophy in some patients. Paresthesia and numbness may be seen at extension of the elbow [35].
