Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jan 1998
Proprioception of the cruciate ligaments: receptor mapping in an animal model.
Ten anterior and posterior cruciate ligaments (ACL and PCL) harvested from adult sheep were investigated under light microscopy for data on the frequency and localisation of neural structures. Serial sections of 25 microns thickness were stained with a modified gold chloride technique. Receptors were classified according to their histological structure. ⋯ The majority of the neural structures were located in the subsynovial sheath or closely associated with endotenon structures. The tibial and femoral insertion areas had a significantly increased receptor density compared with the midpart of the ACL and PCL (P < 0.001), where only 19.3% and 23.7% of the receptors were located. These results emphasise the complex sensory structure of the cruciate ligaments and provide a valid morphological basis for further neurophysiological investigations.
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Arch Orthop Trauma Surg · Jan 1998
Tissue response to bioabsorbable self-reinforced polylevolactide and polyglycolide pins implanted intra-articularly and directly into the bone on different levels. An experimental study on rats.
Self-reinforced poly-L-lactide (SR-PLLA) and self-reinforced polyglycolide (SR-PGA) pins were implanted intra-articularly and directly into the bone of the distal femur of rats at three levels: above, on the same level, and under the surface. For the controls only channels were drilled, or the controls were not operated at all. The follow-up times were 3, 6, and 12 weeks for SR-PGA and 3, 6, 12, and 24 weeks for SR-PLLA. ⋯ In the histologic analysis, the most favorable implantation depth was found to be under the surface where the contact between the implants and bone was best, and the orifice was covered with new trabecular bone at 3 weeks. This was especially seen in intra-articular implantation. In general, the tissue responses were mild, and could also be explained in the statistical analysis by a normal postoperative tissue response and faster biodegradation of PGA.
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Supracondylar process syndrome of the humerus has received little attention in the orthopaedic literature. This case report presents a patient with this condition.
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Multiorgan and tissue donors offer a larger quantity and high quality of bone allograft that cannot be obtained from living donors. The risk of bone contamination must be borne in mind if secondary sterilization is not performed. The bacteriological cultures of 270 bone segments obtained from 53 multiorgan or tissue donors were analysed to study the relationship between previous organ and tissue procurements and bone retrieval contamination. We concluded that no significant differences in bacterial contamination percentage were found for each type of previous organ and tissue procurement, nor in the number of teams per donor.
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Arch Orthop Trauma Surg · Jan 1998
Good and relative indications for elbow arthroscopy. A retrospective study on 103 patients.
The purpose of this study was to present our long-term experience with arthroscopic surgery of the elbow joint with special regard to diagnosis-specific results. Out of 121 patients undergoing elbow arthroscopy 103 were evaluated, with a mean follow-up of 6.2 years. The age of the patients at time of surgery ranged between 3 and 72 years. ⋯ While patients with free joint bodies as well as septic or rheumatoid arthritis obtained a measurable benefit from the arthroscopic procedure, the postoperative improvement for the patients with severe degenerative arthritis was only limited. Patients with unspecific preoperative complaints showed no improvement at all. Thus, while patients with free joint bodies or synovitis without degenerative joint disease are good candidates for elbow arthroscopy, there is only a limited indication for patients with severe degenerative joint disease or patients with a restricted range of motion.