A pectus bar assembly including a bar support and a pectus bar. The bar support can include a fastener and a fabric. A fabric can encircle a first rib and a second rib of a human ribcage. The fabric can include a first free end securable to the fastener and a second free end securable to the fastener to tension the fabric around the first rib and the second rib. The pectus bar can include an elongate body. The elongate body can include an anterior side and a posterior side opposite the anterior side. The posterior side can be supported by the bar support between the first rib and the second rib.