Jaw abnormality sagittally divides the face into five equal parts: It is insufficient to derive at a diagnosis of jaw deformity solely based on the clinical examination. Hence, additional information is gathered from diagnostic tests, which may include dental model analyses and radiographic imaging studies. Mandibular micrognathia is the condition when lower jaw is smaller than normal. Failure of the ramus to develop will give rise to micrognathia.<ref name="Elsevier/Churchill Livingstone"></ref> Micrognathia can be classified as either congenital or acquired. Clinical appearance of some patients with congenital type of mandibular micrognathia can have a severe retrusion of the chin but by actual measurements,
HMCS Moose Jaw she was assigned to Quebec Force, though later transferred to Gaspe Force. She underwent a refit beginning in December, lasting until May. After workups following the refit, "Moose Jaw" was assigned to Western Approaches Command, as part of Operation Neptune. She served in this capacity until September 1944, when she was reassigned to Escort Group EG 41 out of Plymouth. She escorted coastal convoys from Milford Haven until the end of the war. On 28 February 1945 "Moose Jaw" rescued six survivors from the British merchant ship "Norfolk Coast", which was torpedoed and sunk by south-west of Strumble Head. "Moose