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Biomedical subjects

B K Vaughn

Publications and source records attributed to B K Vaughn.

22 records · Page 2Linked to original sources
PubMed1989

Aseptic loosening in total hip arthroplasty secondary to osteolysis induced by wear debris from titanium-alloy modular femoral heads.

Since 1984, we have used components made of titanium alloy for total joint arthroplasty. Recently, two patients needed revision hip arthroplasty, approximately three years after the initial procedure, because of aseptic loosening secondary to severe osteolysis that had been induced by metallic debris. Although implants made of titanium alloy have many favorable qualities--most importantly, superb biocompatibility--the alloy is more susceptible to wear by particles of acrylic cement and tends to generate more polyethylene wear than do components made of stainless steel or chromium-cobalt. A new process of implanting ions has reportedly improved resistance to wear as well as fatigue properties and has enhanced the resistance to corrosion of the implants. Although, to our knowledge, only in vitro studies of this process have been reported to date, we recommend avoiding the use of components made of titanium alloy in which ions have not been implanted. We suggest considering the possibility of osteolysis secondary to appreciable metallic debris in patients who have aseptic loosening of titanium-alloy components that were not implanted with ions.

Adult↗
PubMed1988

Prophylactic use of a hip cast-brace following primary and revision total hip arthroplasty.

A hip cast-brace was routinely applied to 67 patients undergoing 37 revision and 30 primary total hip arthroplasties. In the revision group, 78% of the patients were discharged by the tenth postoperative day; the average period in the cast-brace was 23 days. One patient developed deep venous thrombosis. Dislocation occurred in three patients who had undergone previous revision total hip arthroplasties. Of these three patients, one dislocated while wearing the cast-brace. In the primary group, 72% of the patients were discharged by the eighth postoperative day and average time in the cast-brace was 15 days. One developed deep venous thrombosis; no dislocations occurred.

Braces↗
PubMed1988

Works in progress #2. Threaded acetabular components. Design rationale and preliminary clinical experience.

Two design rationales for threaded acetabular components, the S-ROM Anderson cup and S-ROM SuperCup, are discussed. Components have been followed for at least six months, with a range of six to 24 months. The average follow up is nine months. One hundred components in 96 patients had sufficient follow up and full clinical and roentgenographic evaluations to be included in this study. The 100 hips were divided into four groups based on S-ROM Anderson cup versus S-ROM SuperCup and on primary versus revision. Each hip was evaluated on a clinical and radiologic basis. Based on clinical and roentgenographic evaluations of both the primary and revision situations of the S-ROM SuperCup, consistently good to excellent results were observed. To date, no case has undergone revision for clinical or roentgenographic failure. Dramatic pain relief was exhibited by 96% of patients. Although early results are very encouraging, longer follow ups are necessary.

Acetabulum↗