Raging Capital Management SC 13D/A DERMA SCIENCES / Raging Capital Management ownership change

Exhibit 99.2

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, par value $0.01 per share, of Derma Sciences, Inc.  This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated:  March 16, 2012

Raging Capital Fund, LP

By:	Raging Capital Management, LLC General Partner
By:		/s/ Frederick C. Wasch
		Name:	Frederick C. Wasch
		Title:	Attorney-in-fact for William C. Martin, Managing Member

Raging Capital Fund (QP), LP
By:	Raging Capital Management, LLC General Partner
By:	/s/ Frederick C. Wasch
	Name:	Frederick C. Wasch
	Title:	Attorney-in-fact for William C. Martin, Managing Member

Raging Capital Management, LLC
By:	/s/ Frederick C. Wasch
	Name:	Frederick C. Wasch
	Title:	Attorney-in-fact for William C. Martin, Managing Member

/s/ Frederick C. Wasch

Frederick C. Wasch as Attorney-in-fact for William C. Martin