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Biomedical subjects

L Marmor

Publications and source records attributed to L Marmor.

At least 19 recordsLinked to original sources
PubMed1993

Unicompartmental arthroplasty for osteonecrosis of the knee joint.

A review of 34 knees with osteonecrosis of the medial femoral condyle treated by unicompartmental arthroplasty is presented, with a minimum of two years' follow-up time and an average of five-and-one-half years. Excellent or good results were obtained in 89% of the patients. Of the four failures reported, two were caused by the development of osteonecrosis of the lateral compartment. Two other patients had persistent pain with no apparent cause. Unicompartmental arthroplasty is acceptable treatment of osteonecrosis of the knee joint because of the rapid recovery from the operation, the low morbidity rate, and the preservation of the cruciate ligaments, the patella, and the opposite compartment, which results in better function and motion than a high tibial osteotomy or a total knee arthroplasty.

Adult↗
PubMed1993

Unicompartmental knee arthroplasty. A multicenter investigation with long-term follow-up evaluation.

Nonmental-backed, cemented, unicompartmental knee arthroplasty has a survivorship rate in this multicenter investigation at ten years of 91.4% (+/- 2.8). High levels of patient weight were associated with increased need for revision arthroplasty. Overall, men had a lower revision rate (2.4%) compared with women (3.9%). Valgus postoperative alignment was minimally associated with progression of disease as a cause for revision. No difference in revision rates between medial and lateral compartmental arthroplasty was noted. The theoretical clinical benefits of the use of metal-backed tibial components will need to be reevaluated in light of these findings.

Adult↗
PubMed1991

Effect of fibrinogen concentrates on blood loss in total knee arthroplasty.

Total knee arthroplasty has been associated with marked blood loss that occurs despite the use of a tourniquet and minimal postoperative suction drainage. Autogenous fibrinogen cryoprecipitate was used to coat the operative site with a fibrin clot to determine the effect on postoperative blood loss. A method of determining the inapparent blood loss was used based on the red cell mass of the patient and using the hematocrit at the same point of time in relationship to the surgery for the control and study group. The magnitude of tissue extravasation was surprising, and it was almost double the blood loss expected by traditional methods. The benefit of using fibrinogen concentrates is exclusively confined to the inapparent blood loss and not the postoperative blood loss.

Administration, Topical↗
PubMed1990

Suction drainage tube entrapment in total knee arthroplasty.

Two cases of entrapment of suction drainage tubes between the femoral and tibial components were encountered after total knee arthroplasty. The first patient had an arthrotomy because it was believed that the tube was caught in a suture, and while attempting to remove it a portion remained trapped in the joint. At operation, flexion of the knee released the tubing. The second patient did not require reoperation because flexion of the knee released the tubing.

Aged↗
PubMed1988

Total knee arthroplasty in a patient with congenital dislocation of the patella. Case report.

A 63-year-old man with bilateral congenital dislocation of the patella developed severe osteoarthritis of his knee joints. Bilateral total knee arthroplasty was performed without an attempt to correct the dislocated patella and extensor mechanism. Four years later the patient had excellent, painless function of his knee joints with stability and excellent quadriceps strength.

Humans↗
PubMed1988

Unicompartmental knee arthroplasty. Ten- to 13-year follow-up study.

In the past decade, two concepts have caused considerable controversy in orthopedic surgery of the knee. Some orthopedic centers contend that osteotomy of the tibia is the procedure of choice for unicompartmental gonarthrosis of the knee and resist the concept of unicompartmental arthroplasty. The other concept is that if unicompartmental arthroplasty is necessary, the entire joint should be replaced, since the uninvolved compartment may develop arthritis in the future. This concept is illogical and contrary to the basic orthopedic principle of preserving normal structures whenever possible. It is obvious that joint replacements may not last the life of the patient and the need for revision must be considered; therefore, the original procedure should preserve as much bone stock as possible. The purposes of this review of unicompartmental replacement are to resolve these questions with data on long-term results of unicompartmental arthroplasty compared with data on high tibial osteotomy, to evaluate the cause of failures, and to improve future results. Eighty-seven consecutive unicompartmental arthroplasties were performed between November 1972 and April 1976. There were 60 knees available for study, with a minimum ten-year (average, 11-year) follow-up period. The results were evaluated using the Hospital for Special Surgery rating system, with 30 excellent, eight good, four fair, and 18 poor results. Seventy percent of the patients had satisfactory results, and pain relief was accomplished in 86.6% of patients. Of the 21 failures, the majority were due to material or technical problems and improper selection of the patients.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1988

Unicompartmental arthroplasty of the knee with a minimum ten-year follow-up period.

The long-term results of 60 Modular Marmor knee unicompartmental arthroplasties with a minimum ten-year follow-up period were reviewed. Valgus, varus, and flexion contracture deformities were corrected. The range of motion was not affected by the arthroplasty, and early postoperative motion prevented the need for manipulation of the knee. Seventy percent of the patients had a satisfactory result based on the Hospital for Special Surgery rating system. The majority of failures were due to technical factors or improper selection of the patient for unicompartmental arthroplasty.

Adolescent↗
PubMed1988

Technique for patellar resurfacing in total knee arthroplasty.

The proper size of the patellar component for a total knee arthroplasty can be determined with the use of a caliper. The thickness of the patella is measured prior to removing the articular surface and again after the trial component has been inserted into the patella. The measurements should be approximately the same in thickness. It is important to select the proper patellar component to avoid loss of flexion of the knee, a very prominent patella, and postoperative subluxation of the patella.

Humans↗
PubMed1987

Unicompartmental knee arthroplasty following patellectomy.

Patients with total knee arthroplasty following patellectomy have been reported to experience pain and instability. The results of ten patients with 11 knee arthroplasties using the Marmor knee were excellent in seven patients and good in three with an average follow-up period of nine years. It is extremely important to preserve the cruciate ligaments or to use a total knee prosthesis that has inherent anteroposterior stability.

Adult↗
PubMed1984

Stem fractures of extra-heavy Cobra femoral hip prostheses. Report of two cases.

Stem fractures of three extra-heavy, large Charnley serrated Cobra femoral components were observed in two young, heavy, and active male patients. The average time from implantation to stem failure was 68 months (43, 76, and 86 months). Two fractures extended from the lateral surface toward the lowest serration, which apparently acted as a stress-riser despite the caliber of the stem. Making a prosthesis thicker by using the same material does not solve the problem of fatigue fracture if the material, design, or cement interface is at fault.

Equipment Failure↗
PubMed1984

Osteonecrosis of the knee. Medial and lateral involvement.

Osteonecrosis of the medial and lateral compartments of the right knee was observed in a 69-year-old man who had never been treated by steroids. Spontaneous osteonecrosis also developed in the left knee. He was treated by total knee arthroplasty. Lateral compartment osteonecrosis has not been reported previously, except in patients receiving steroid therapy.

Aged↗
PubMed1984

Lateral compartment arthroplasty of the knee.

Fourteen lateral compartment arthroplasties with an average follow-up period of 89 months revealed 11 excellent results. A review of the literature corroborates these follow-up results. In patients with valgus gonarthritis or traumatic deformity, lateral unicompartment replacement is recommended instead of high tibial osteotomy if the angulation is greater than 10 degrees.

Adult↗
PubMed1979

Marmor modular knee in unicompartmental disease. Minimum four-year follow-up.

Fifty-six consecutive knees were operated on for single compartment disease using the Marmor modular knee with a minimum follow-up of four years. The information obtained indicates that single compartment replacement is valuable in restoring function and relieving pain in a high percentage of patients. There was no evidence of late degeneration of the successful results at the time of writing. No difference in the results obtained with medial or lateral compartment replacement has been noted. Degeneration of the compartment not operated on has not been a problem. Unicompartmental replacement is an excellent procedure in the elderly patient who has osteoarthritis of the knee with varus or valgus deformity.

Aged↗
PubMed1979

Synovectomy of the knee joint.

Patients with active rheumatoid arthritis of the knee should be considered for synovectomy to arrest the disease and to preserve joint function. Careful selection of patients on the basis of the weight bearing roentgenogram is important. Surgery should not be delayed if there is evidence of progression of the disease on serial roentgenograms, or if the original films reveal early joint disease. Preservation of the suprapatellar pouch to prevent adhesions of the quadriceps mechanism greatly improves the postoperative range of motion. Long term follow-up over 10 years has demonstrated the value of synovectomy in rheumatoid arthritis of the knee.

Acute Disease↗