Medical Textiles

Absorbable Suture Tensile Degradation Calculator

The suture only has to outlast the wound. Strength retention is a race between hydrolysis and healing.

Suture As implanted
N
days
Clinical Requirement Wound support
days
N

Tensile Retained

— N

At the stated time in vivo

Retention Profile

Strength Retained
— %
Days to Minimum Strength
— days
Margin Beyond Time in Vivo
— days
Tensile at One Week
— N
Degradation Rate Constant
— per day

Decision-support only, and a simplification of real behaviour: hydrolysis accelerates with temperature, pH and infection, braided sutures degrade differently from monofilament, and mass absorption continues long after strength is gone. Suture selection is a clinical decision governed by the manufacturer's in vivo retention data, not by a model.

Absorbable Suture Tensile Degradation Calculator — free, with the formula and a worked example, at Textile School.