This condition is a form of trunk contracture in the nature of a kyphosis (scoliotic and lordotic forms of contracture are also found in the hysterical group), for which the terms _plicature_ of trunk, traumatic kyphosis, pseudo-spondylitis, and camptocormia have been in use. The term camptocormia has been proposed by Souques and Rosanoff-Saloff. The _poilus_ speak of the condition as _cintrage_ (arching). In these cases the trunk is held almost horizontally, with the head in hypertension and neck muscles and thyroid cartilage jutting. The patient looks fixedly straight forward, with eyes wide open, and carries his legs extended or half flexed. The normal folds of the abdominal wall are very deeply marked, and at the level of the groins, the epigastrium and the pubis, there are deep folds. Viewed from behind, the median lumbar fold has disappeared or is faintly marked, as are the sacro-lumbar and other masses of spinal muscles. The whole lumbar region is elongated and flattened. The dorsal spines of the back are accentuated; the buttocks are flattened and broadened transversely. The back of the neck is marked by deep transverse folds, and the seventh spine does not stand out. The patient can walk perfectly, though sometimes there is a pseudocoxalgia and lameness. Attempts to straighten the body lead to visible forcible contractions of various muscles, but the kyphosis remains persistent. There is a sense of active resistance on the part of the patient, which can be demonstrated by palpation. If an active attempt at straightening is made, lumbar or sacral pain develops, followed by a very lively and emotional state of anxiety on the part of the patient, with interrupted and accelerated breathing, an expression of terror in the face, and a rapid pulse. The patient then subsides into his earlier attitude, and his anxiety disappears in a few seconds. It is much easier in many subjects to reduce the camptocormia in the position of dorsal decubitus than upright. Burial after shell explosion; lumbar ecchymoses; regionary pains; camptocormia, 5½ months. Cure by three months’ plaster cast about trunk. =Case 244.= (ROUSSY and LHERMITTE, 1917.) An infantryman was buried after shell explosion August 25, 1914, but he sustained no wound or bone injury. There was, however, a large ecchymosis of the lumbar region, and he had felt violent lumbar pains. The trunk was carried flexed, symmetrically bent over and quite incapable of being straightened completely. A plaster corset was applied March 16 by Souques. Three months of this was followed by a complete straightening, which lasted after the corset was removed. The patient was discharged well.