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Biomedical subjects

D B Kettelkamp

Publications and source records attributed to D B Kettelkamp.

At least 19 recordsLinked to original sources
PubMed1990

Recertification in orthopedics.

Will the recertification process always remain the same or is there room for change? Almost certainly the process will change with experience and newer technology, particularly as it relates to clinical policies, outcome studies, and increased computerization of patient data. Even the addition of the practice-based oral exam in 1989 represented a change. The American Board of Orthopaedic Surgery will continue to study and review the experience and methods of other boards with recertification and will continue the dialogue with orthopedic surgeons. Change is, after all, a constant.

Certification↗
PubMed1989

Achilles' heel.

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Clinical Competence↗
PubMed1988

Degenerative arthritis of the knee secondary to fracture malunion.

Degenerative arthritis of the knee is a complication of femoral or tibial fractures potentially avoidable by the correction of various degrees of malalignment. To better clarify the malalignment problem, the records of 14 patients (15 limbs), with degenerative arthritis of the knee and a history of tibial or femoral fracture were retrospectively reviewed. The average follow-up was 31.7 years. Static biomechanical frontal plane analyses were evaluated. The calculated increased force on either the medial or lateral tibial plateau, due to the malunion, was strongly associated with presence of a varus or valgus deformity at the knee (p less than 0.0005). A normal tibial plateau force for the malaligned condition multiplied by the time since fracture correlated directly with the amount of subsequent varus or valgus deformity at the knee (p less than 0.01). Lower limb fracture alignment should be restored to as near normal as possible to reduce the likelihood of gonarthrosis.

Adult↗
PubMed1986

General considerations in total knee arthroplasty.

Total knee replacement is a powerful but complex surgical procedure. Recognizing and addressing all planes of motion at the knee is mandatory for good results. Accurate alignment of the prosthetic component and the limb is crucial. Close attention to surgical detail and prosthetic interaction is necessary. Current prosthetic replacement fails to return the bone to its normal strain environment. Clinical results with current resurfacing components rival or exceed those obtained with conventional total hip replacement in properly selected patients.

Biocompatible Materials↗
PubMed1976

The effect of patellectomy on knee function.

Thirty-three patients were evaluated after patellectomy for subjective complaints, objective physical findings, quadriceps strength, and knee motion during activities of daily living. Partial and complete patellectomy caused an equal loss of active and passive range of motion. Complete patellectomy resulted in greater ligament instability, quadriceps atrophy, and loss of quadriceps strength compared with partial patellectomy. Complete patellectomy casued a reduction in the degree of stance-phase flexion during level walking and negotiating stairs.

Activities of Daily Living↗
PubMed1976

Results of proximal tibial osteotomy. The effects of tibiofemoral angle, stance-phase flexion-extension, and medial-plateau force.

Forty-eight knees were evaluated after proximal tibial osteotomy, performed for varus deformity to determine the desired amount of correction of the deformity, the effect of osteotomy on knee motion during gait and one medial-plateau force during standing, and the relationships between these factors and the result. Correction of the tibiofemoral angle to 5 degrees of genu valgum or more produced the best and most lasting results. Stance-phase flexion-extension increased the rotation decreased in knees with good results while the other gait parameters were not significantly changed. Medial-plateau force was decreased by successful tibial osteotomy. The knees with the best and most lasting results had 7 degrees of stance-phase flexion-extension or more during walking and either a valgus tibiofemoral angle of 5 degrees or more or a medial-plateau force of 50 per cent of body weight or less.

Adult↗
PubMed1975

Development of a knee scoring scale.

Two knee scoring scales have been tested against post-osteotomy knees for degeneration arthritis and post-arthroplasty knees (McIntosh Operation) and were found to be acceptable for both conditions. Scoring Scale I was slightly better than Scale II. This scale should be tested on other types of knee reconstruction. Modifications in this scale may be needed in the future in an effort to produce as near perfect an objective knee function scoring method as is possible.

Arthritis, Rheumatoid↗
PubMed1975

Discussion.

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Arthroplasty↗