Interest of a 3D custom-made implant in the reconstruction of bone defects of the cranial vault.

The authors report a case of a patient managed for severe cranial vault depression following combined neurosurgery and radiotherapy. This situation caused major aesthetic discomfort and was potentially dangerous due to the mechanical weakness of the bone flap. The authors had a CAD (computer aided design) silicone elastomer custom-made implant made to fill perfectly the depression. Beforehand, an expansion was performed to cover the implant after removal of the radiated skin. The surgery and post-operative course raised no concerns. After one year of follow-up, the result is very good and the patient very satisfied, proving that this technique certainly has its place in the therapeutic arsenal when faced with a tissue defect of the cranial vault.

[Place of 3D custom-made implants after failure of modeling steno-chondro-plasties]. / Place des implants sur mesure 3D après échec des sterno-chondro-plasties modelantes.

Most common congenital malformation of the thorax, Pectus Excavatum affects about one in 500 people. Several surgical or medical techniques have been proposed. Some are followed by complications or insufficient results even though their constant functional value is highly controversial. Secondary surgery with a deep customized 3D elastomer implant, may be an elegant effective and safe solution compared to others; it allows a good aesthetic result expected by patients in the absence of any respiratory or cardio-vascular functional context.

[Breasts and congenital chest-wall deformities: Surgical strategy with 3D implants]. / Le sein et les malformations thoraciques : stratégie chirurgicale et implants.

Computer-aided design and manufacturing of custom-made elastomer implants leads from a CT scan to fill in with precision, a congenital chest wall congenital deformity, both bone (pectus excavatum) and muscle (Poland Syndrome), resulting in a natural repositioning of the breasts. We report our 25 years' experience in 301 women (234 Pectus+64 Poland). Parietal correction must always be done in first intention. It is common to have to carry out a second stage in women with an additional mammaplasty especially in the presence of insufficient glandular volume or a fairly frequently associated tuberous breast.

[Congenital thoracic deformities and 3D custom-made implants. New classification based on a series of 789 treated cases]. / Malformations thoraciques congénitales et implants sur mesure 3D. Nouvelle classification basée sur une série de 789 cas traités.

The authors present a new study on 789 cases of congenital thoracic malformations including 638 pectus excavatum and 151 Poland syndromes, according to a new classification which completes Chin's one. All these malformations were treated with silicone elastomer implants. The contribution of computer-aided design and manufacturing (CAD/CAM) since 2008 is essential. The one-stage surgical protocol is precisely described. The results are impressive, permanent, for life, and complications are rare. The authors evoke a common vascular etiopathogenesis theory at the embryonic stage and question the heavy techniques of invasive remodeling that are most often unjustified.