Article

For secure tendon repair, while core suture materials have been
previously investigated, the optimum material for peripheral sutures remains
unclear. METHODS: Transected bovine gastrocnemius tendons were repaired by
2-strand side-locking loop technique using no.2 braided polyblend polyethylene
thread for the core suture. Then, 8-strand peripheral cross-stitches were added
using either 2-0 rigid sutures (braided polyblend polyethylene) or USP 2-0-sized
elastic sutures (nylon). The holding area of each peripheral suture was set at
either 3x1mm (shallow holding) or 6x2mm (deep holding). Therefore, 4 groups were
compared (the shallow-rigid, deep-rigid, shallow-elastic, and deep-elastic
groups). The gap formation, ultimate tensile strength, and suture migration state
were measured after 500 cyclic loadings (from 10 to 200N). METHODS: The
shallow-rigid group had inferior outcomes compared to the other groups. Although
the deep-rigid group had the smallest gap and highest ultimate strength, all
peripheral sutures had failure prior to core suture rupture. The two elastic
groups showed no significant differences, irrespective of the size of the holding
area. Suture migration did not occur in the two elastic groups until the ultimate
strength was reached and the core suture ruptured. INTERPRETATION: Depending on
the suturing method, rigid suture material may not be appropriate for peripheral
sutures, when accompanying rigid core suture material. If peripheral sutures can
be made with accurate deep holding, rigid suture material will provide favorable
outcome. However, in other cases, elastic suture material is considered best for
supporting a rigid core suture, as elasticity is another important factor for
peripheral sutures.
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Langue : ANGLAIS