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1.
Isolated patellofemoral arthritis is an increasingly recognized entity, and is usually associated with previous patellofemoral dysplasia or instability. Patellofemoral arthroplasty (PFA) has evolved significantly in recent years, both in terms of implant design and importantly in the understanding of appropriate patient selection. This review outlines the indications and investigations for PFA, provides a brief history of the development of contemporary implants, and presents the clinical outcomes for the prostheses most commonly used in the UK. In addition, it provides a detailed surgical technique for implantation of an onlay implant, with tips on how to optimize patellofemoral biomechanics and thus achieve a consistently good outcome. 相似文献
2.
Denise Lee Marcella D. Walker Hsin Yi Chen John A. Chabot James A. Lee Jennifer H. Kuo 《Surgery》2019,165(1):107-113
Background
Bone mineral density (BMD) has been found to improve after parathyroidectomy (PTX) in patients with primary hyperparathyroidism. There are few data on the effect of PTX on BMD in normocalcemic and normohormonal primary hyperparathyroidism.Methods
A retrospective analysis of 92 primary hyperparathyroidism patients who underwent PTX between 2004 and 2012 with pre- and post-PTX dual-energy x-ray absorptiometry was performed. Within-person changes in BMD pre- and post-PTX were analyzed using log linear mixed models, stratified by biochemical status.Results
Bone mineral density increased post-PTX in the whole cohort at the lumbar spine (+2.5%), femoral neck (+2.1%), and total hip (+1.9%) and decreased at the one-third radius (–0.9%). On comparison of BMD changes by profile, BMD increased in those with the typical profile at the lumbar spine (3.2%), femoral neck (2.9%), and total hip (2.9%) but declined at the one-third radius (–1.5%). In contrast, BMD improved only at the femoral neck (4.3%) in the normohormonal group and did not change at any site in the normocalcemic group. The typical group had a greater increase in BMD over time at the femoral neck and total hip compared with normocalcemic patients.Conclusion
Our results indicate that the skeletal benefit of PTX was attenuated in normocalcemic and normohormonal patients, suggesting that skeletal changes after PTX may depend on biochemical profile. 相似文献3.
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Sonoelasticity imaging of prostate cancer: in vitro results 总被引:2,自引:0,他引:2
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The training and use of trained birth attendants (TBAs) in Guinea Bissau was started in 1977 as part of the primary health care program. The majority of TBAs are illiterate, making accurate record-keeping of antenatal visits ineffective. This paper presents an antenatal card developed by the Ministry of Health and Social Affairs in use since 1982. The card was designed for several purposes: to help nurse-supervisors find and correct mistakes, to help TBAs remember what to look for during antenatal visits, and to enable them to identify at-risk pregnancies and refer them if necessary. The card requires no writing other than the initial visit, when it is suggested that a literate person assist the TBA in recording name, age, and village. Pictorial symbols are used on the rest of the card, which is retained by the patient between visits. The card is divided into 3 areas: a history (number of live children, number of dead children, number of abortions) recorded by placing the correct number of ticks in the proper column; examination (weight if possible, signs of anemia and edema indicated by a +or-, height of uterus, presence of fetal heart sounds); care (reminding TBAs to give nutritional advice, malaria prophylaxis, dispense iron tablets, determine if referral is necessary). The card needs to be field tested by nurses and midwives who will be training the TBAs, and then evaluated for its use in detecting at-risk pregnancies, making any additions or changes as necessary. 相似文献
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