The Knee Learning Resource
Meniscal arrows are tiny bio-degradeable polymer harpoons which are used to hold together the torn fragments of a 'knee cartilage' (meniscus) tear until the fragments join together and the arrow dissolves.
The technique was initially hailed as a great step forward, as it does not require the same degree of skill as meniscal suturing. However, there have been some problems with arrows dis-engaging themselves and migrating into the joint space or even under the skin.
If the arrows do their job well, and allow the opposed edges of a torn meniscus to heal, the arrow itself will eventually be absorbed by the body and does not need to be removed.
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