| 1. |
- Danielsen, N, et al.
(författare)
-
Axonal growth in mesothelial chambers. The role of the distal nerve segment
- 1983
-
Ingår i: Scandinavian Journal of Plastic and Reconstructive Surgery. - 0036-5556. ; 17:2, s. 25-119
-
Tidskriftsartikel (refereegranskat)abstract
- An experimental model is presented for studying nerve regeneration over gaps of various lengths between the both ends of a severed nerve. After transferring left and right sciatic nerves of rat to the back, the gap between the two nerve ends could be bridged by a preformed, tube-shaped mesothelial chamber of a desired length. When the gap length was 10 mm or less, a well developed nerve structure was generated in the chamber between the nerve ends, and axons from the left sciatic nerve reinnervated muscles in the right limb via the right sciatic nerve. When the gap length was extended to 15 mm or more no such regeneration occurred. When no distal nerve end was introduced into the chamber, there was a limited growth into this chamber over only 5-6 mm. This "limited growth phenomenon" is discussed with respect to a lack of "trophic" or cellular support from a distal nerve segment. It is also proposed that the termination of growth, seen under these circumstances, may suggest a new principle for avoiding the development of neuromas after nerve transections.
|
|
| 2. |
- Petersson, Claes J, et al.
(författare)
-
Joint space in normal gleno-humeral radiographs
- 1983
-
Ingår i: Acta Orthopaedica Scandinavica. - : Medical Journals Sweden AB. - 0001-6470. ; 54:2, s. 274-276
-
Tidskriftsartikel (refereegranskat)abstract
- The gleno-humeral joint space in standard antero-posterior images of 175 normal subjects was measured at three different sites. The average of the three measurements, the integral joint space, was calculated and was found to be between 4 and 5 mm. The value does not change with age, except in women, in whom it increases slightly. A narrow joint space in an elderly patient should not be expected simply because the patient is old. The measuring technique described is useful in population studies. In individual cases a simple measurement with a ruler serves the same purpose.
|
|
| 3. |
- Petersson, Claes J, et al.
(författare)
-
The subacromial space in normal shoulder radiographs
- 1984
-
Ingår i: Acta Orthopaedica Scandinavica. - : Medical Journals Sweden AB. - 0001-6470. ; 55:1, s. 57-58
-
Tidskriftsartikel (refereegranskat)abstract
- The subacromial space in standard anteroposterior radiographs of 175 normal shoulders was between 9 and 10 mm. The space was significantly greater in men, with a slight reduction with age. In middle age, a subacromial space less than 6 mm is pathological, possibly indicating supraspinatus tendon rupture.
|
|
| 4. |
- de Luca, S., et al.
(författare)
-
Proteoglycans from chick limb bud chondrocyte cultures. Keratan sulfate and oligosaccharides which contain mannose and sialic acid
- 1980
-
Ingår i: Journal of Biological Chemistry. - 0021-9258. ; 255:13, s. 6077-6083
-
Tidskriftsartikel (refereegranskat)abstract
- The precursors, [ 35S]sulfate and [2- 3H]mannose, were used to study the biosynthesis of keratan sulfate and other oligosaccharides on proteoglycans isolated from Day 8 cultures of chick limb bud chondrocytes. After alkaline borohydride treatment, three fractions with sialic acid were separated by molecular sieve chromatography. The first contained keratan sulfate which was purified by digestion with chondroitinase to remove chondroitin sulfate, followed by molecular sieve and ion exchange chromatography. The purified keratan sulfate contained about 8% of the 35S activity originally in monomer. The chains had an average length of about 40 monosaccharides and contained only trace amounts of mannose (less than 1 residue/three to four chains). The second fraction contained the majority of the [ 3H]mannose originally in monomer, but no 35S activity. This fraction appears to contain oligosaccharide-peptides of the asparagine-N-glycosylamine type because there were no reduced sugars present and the alkaline borohydride treatment extensively degraded the core protein. The composition of the oligosaccharides, with high proportions of mannose, N-acetylglucosamine, galactose, and sialic acid, was consistent with this suggestion. The third fraction consisted of a series of oligosaccharides with sizes between three to six saccharides. They contained N-acetylgalactosaminitol, indicating that they were attached to the core protein by O-glycoside bonds between N-acetylgalactosamine and hydroxyl groups on serine and threonine. Thus, proteoglycans contain two classes of oligosaccharides, a mannose-rich class characteristic of glycoproteins and an O-glycoside class characteristic of mucins, in addition to the chondroitin sulfate and keratan sulfate chains.
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
- Mogensen, Brynjolfur, et al.
(författare)
-
Surface replacement of the hip in juvenile chronic arthritis
- 1981
-
Ingår i: Scandinavian Journal of Rheumatology. - : Informa UK Limited. - 0300-9742 .- 1502-7732. ; 10:4, s. 269-272
-
Tidskriftsartikel (refereegranskat)abstract
- Seventeen resurfacing arthroplasties undertaken in 13 patients with severe hip arthritis are described. The youngest patient was 14 years and the mean age 23 years. The average follow-up time is 2 years. In one patient, pain-free for 7 months, the femoral cup slipped and revision into total hip replacement was easily performed. The remaining patients are pain-free, have increased motion, a better walking capacity and can enjoy sex life. The tremendous improvement in quality of life for these young patients justifies operation even if all may have to be converted into total hip replacement within a couple of years, although there is nothing to indicate that in this early follow-up.
|
|
