title: Long-term results on VK partial and total temporomandibular joint systems.
abstract: This article reviews the results obtained on 262 VK partial and total temporomandibular joint (TMJ) procedures followed up to 10 years.  VK I total joint (placed 1982 to 1986) cumulative success rate was 44% at 6 years and 20% at 10 years, while VK II (placed 1986 to 1990) cumulative success rate was 80% at 6 years.  Material wear of the Teflon FEP surface of the VK I fossa was the most common reason for failure. There were no VK II material failures.  A significant improvement in clinical success parameters for both prostheses was found if no previous surgeries were done before VK I or VK II total joint placement.  Rib grafts were not helpful after removal of total joint prostheses if patients had a history of multiple procedures.  Total TMJ prostheses must be reserved for patients with alternative surgical failures or when these procedures are no longer indicated.  Close monitoring by clinical examination and imaging is necessary.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Louisiana State University School of Dentistry, New Orleans 70119.
authors.forename: J N
authors.initials: JN
authors.lastname: Kent
authors.forename: M S
authors.initials: MS
authors.lastname: Block
authors.forename: J
authors.initials: J
authors.lastname: Halpern
authors.forename: M G
authors.initials: MG
authors.lastname: Fontenot
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005500:Follow-Up Studies; D006801:Humans; D007595:Joint Prosthesis / Q000009:adverse effects*; D008422:Materials Testing; D008875:Middle Aged; D011475:Prosthesis Failure; D013705:Temporomandibular Joint Disorders / Q000601:surgery*