An implantable tissue expander is provided for supporting a body tissue. The tissue expander includes an implantable support member that is externally positioned with respect to the body tissue to be shaped. The support member includes a first end and an opposing second end. The first end includes a first fastener configured to be inserted into the body tissue to secure the first end to a first portion of the body tissue. The second end includes a second fastener configured to be inserted into the body tissue to secure the second end to a second portion of the body tissue. The support member includes a biasing element configured to exert a tension force at each of the first end and the second end to shape the body tissue.
