Implants of small joints in hand

3^rd International Conference and Exhibition on Materials Science & Engineering

October 06-08, 2014 Hilton San Antonio Airport, USA

Samineh Barmaki

Accepted Abstracts: Material Sci Eng

Abstract :

Small joints of wrist can be affected by hand arthritis leading to pain and deformity of the joints. Prosthetic development must take in to consideration range of motion, stability, ease of implantation and soft tissue reconstruction. This research is focused on the arthritis of the basal joint of the thumb which most often affects middle-aged women. Several surgical techniques have been described for management of degenerative basal joint changes. These include excision of the trapezium alone, ligament reconstruction with or without tendon interposition (LRTI) and trapezium resection, arthrodesis and multiple arthroplasty options using biologic and synthetic implants, including silastic prostheses, metal prostheses and allograft interpositions. Researchers found out, successful and durable results with ligament reconstruction with or without tendon interposition. However pinch strength was not satisfactory due to shortening of the thumb by trapeziectomy. Joint arthroplasty can aid maintenance of the length of the thumb and provide greater pinch strength. Several studies about silicone implants reported implant wear, synovitis and osteolysis. Metallic implants resulted in implant loosening and instability. Researchers found out a porous poly-L/D-lactide copolymer implant with an L: D monomer ratio of 96:4 (P (L/D) LA 96/4) resulted significant strength and can be replaced with fibrous tissue in 2-3 years. Silicone implant is better at palmar stability compared to PLDLA (poly-L/D-lactide copolymer) implant, whereas lack of silicone synovitis and osteolysis are the advantages of the PLDLA implant. For achieving definite results, longer follow-ups are needed for synthetic allograft and PLDLA implants.

Biography :

Samineh Barmaki has completed her BSc in Material Science in ceramic branch from University of Tehran, Science and research branch and MSc in Biomedical Engineering (Major: biomaterials) from Tampere University of Technology in Finland. She was also representative of Biomedical Engineering Department during her master program in university. Her master thesis abstract is also approved as a poster presentation in 26th European Conference on Biomaterials in Liverpool- United Kingdom.