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The Journal of Bone & Joint Surgery British Volume
Vol. 59-B, Issue 2 | Pages 206 - 212
1 May 1977
Eskeland G Eskeland T Hovig T Teigland J

Three normal digital flexor tendon sheaths and the corresponding tissue formed around five silicone rod tendon implants, two silicone rubber mammary prostheses and one polyethylene tubing implant have been examined by light microscopy and by transmission and scanning electron microscopy. No principal difference in morphology was found. The surface facing tendon or implant was almost invariably covered with an irregular layer of amorphous material and filaments; only occasionally were collagen fibrils or cells exposed. Beneath the surface there were abundant collagen fibrils and some cells; besides fibroblasts, cells rich in filaments and often with numerous glycogen granules, mitochondria and peripherally located vesicles were found. These cells were frequently surrounded by a thick layer of an amorphous matrix. The results indicate that the implants caused remarkably little tissue reaction.