Bibliographic record
Abstract
Articular cartilage allows active articulation of diarthrodial joints. This is made possible by a unique set of properties afforded by a very specialized macromolecular organization of an extensive extracellular matrix that is secreted by chondrocytes. Cells within the superficial layer of the cartilage secrete a special lubricant that, together with hyaluronic acid in the synovial fluid, creates an almost frictionless articulation. Articular cartilage is integrated with subchondral bone, the interface of which is partly calcified. Peripherally, cartilage gives way to the synovium, which not only lubricates the joint but also maintains an aseptic environment (cartilage is extremely sensitive to proteolysis induced by contaminant bacteria). With articular cartilage as an interface with subchondral bone, the forces of articulation, consequent upon skeletal movement, are carefully dissipated, thereby protecting the underlying bone from traumatic damage and abnormal excessive loading, which can create pathological changes such as sclerosis. Thus, articular cartilage plays an essential role in joint function. Whenever cartilage is damaged locally or more extensively as a consequence of injury or arthritis, it loses key functional properties, which promotes further pathological changes in surrounding cartilage and neighboring bone. Articulation is altered and opposing articulating surfaces are loaded differently, leading to further pathological changes in surrounding cartilage. During articular cartilage repair, the surgeon should seek to restore these special properties of cartilage while preventing or minimizing the onset of associated pathological changes in the remainder of the joint. Therefore, cartilage repair is not only about restoring functional properties but also about arresting the pathological changes of degenerative arthritis that result from altered loading due to damage to articular cartilage. The purposes of the present report are to better define articular cartilage, to describe its special structure at the macroscopic and molecular levels, to explain the special cellular and molecular processes that create and maintain …
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.008 | 0.014 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.007 |
| Scholarly communication | 0.007 | 0.010 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.007 | 0.005 |
| Insufficient payload (model declined to judge) | 0.011 | 0.009 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".