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Biomedical subjects

R W Jackson

Publications and source records attributed to R W Jackson.

At least 109 records · Page 6Linked to original sources
PubMed1975

Surgical stabilisation of the spine.

It is important to assess spinal injuries, both in terms of cord damage and column damage, shortly after the trauma has occurred. A decision should then be made concerning the eventual stability of the bony vertebral column. If a lesion is unlikely to heal soundly by bone or if one is unable to obtain a reduction by conservative measures, one should consider surgical stabilisation of the damaged spine in the subacute phase. At the same time as one stabilISES THe spine with metallic fixation, bone grafts should be added for ultimate stability. If an unstable spine is encountered in the later stages of treatment, surgical stabilisation is again indicated. Metallic fixation can greatly aid in stabilising the spine until bone grafts can mature. Osteotomies of the spine through a combined transthoracic and posterior approach can be extremely valuable in correcting deformity. While there is no role for decompressive surgery after spinal cord injury, there is still a definite role for surgery in balancing and stabilising the vertebral column.

Bone Transplantation↗
PubMed1975

The impact of arthroscopy on the management of disorders of the knee.

A study has been made of 800 consecutive arthroscopic examinations of the knee with special emphasis on the changes in management that resulted. Of 614 knees that would have been operated upon if arthroscopy had not been available, open operation was avoided in 32 per cent, a defferent operation was done or planned in 27 per cent, and there was no important change in the remaining 41 per cent. Of 186 knees that would have been treated conservatively if arthroscopy had not been available, the examination resulted in some immediate benefit to 30 per cent of the patients. There were no wound infections after arthroscopy alone, and the known incidence of incorrect interpretation was 1.4 percent.

Endoscopy↗
PubMed1975

The diagnosis of problems after meniscectomy.

The causes of persistent symptoms after meniscectomy have been assessed clinically, radiologically and arthroscopically in 174 knees. The commonest finding was early degenerative arthritis (chondromalacia) of the femoral condyle (40 per cent). Retained fragments of meniscus were less common than expected (13 per cent), and lesions of the other meniscus were rare (5 per cent). The clinical diagnosis was altered in 42 percent by arthroscopic examination. Arthroscopy was found to be a valuable technique in this group of patients with problems of diagnosis.

Adult↗
PubMed1975

Meniscectomy and chondromalacia of the femoral condyle.

One hundred and fifty-four knees with 161 torn menisci were examined with the arthroscope immediately before meniscectomy. The incidence of early degenerative arthritis (chondromalacia) of the femoral condyle was correlated with the age of the patient, the interval between injury and surgery, and the type of meniscal lesion. The incidence of condylar chondromalacia was significantly higher in patients over the age of thirty (p less than 0.01) and in those with a history longer than three months (p less than 0.05). Posterior horn tears were associated with the highest incidence of degenerative changes, but were also associated with a longer history and with older patients. Attention is drawn to the adverse effect of damaged menisci on condylar articular cartilage, and a plea is made for early diagnosis and removal of damaged menisci.

Adolescent↗
PubMed1974

Studies of the stability and toxicity of zinc polyacrylate (polycarboxylate) cements (PAZ).

Zinc polycarboxylate cement (PAZ) was shown to actively bond to 45Ca in vitro, with maximum uptake occurring at a Ca+2 concentration of 0.2 mg/ml. When the resultant PAZ-45Ca complex was subsequently incubated in the presence of high levels of unlabeled Ca+2, there was an exchange between the 45Ca bond to the cement and the Ca+2 in solution. When PAZ prepared using 65Zn was incubated with high levels of Ca+2, there was no exchange between the Ca and the 65Zn. 14C-PA failed to be taken up by L-cells in tissue culture, during 16 division cycles. Using radioactive PAZ prepared from 14C-PA, the PA moiety of the cement was shown to be extremely insoluble and stable in vivo.

Acrylates↗
PubMed1973

Case 1, Part 1.

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Child↗