Is the third trochanter of the femur a developmental anomaly, a functional marker, or an evolutionary adaptation?
Bibliographic record
Abstract
The third trochanter (TT) is a proximal femoral accessory tubercle at the upper border of the gluteal tuberosity that is unusually encountered on the posterior aspect. However, detailed knowledge about the TT remains limited. For this reason, TT was investigated in all its aspects. To give an overview about the TT, a review was conducted in databases until November 2021. Out of 4981 articles, only 53 articles could be included, most of which were studies conducted on dry femurs. The TT can be a result of the developmental process of gluteus maximus due to posture and bipedal locomotor activity. Another explanation of the formation of TT is the inactivation, deficiency, or mutation of specific genes that cause alterations in the proximal femoral end. The current review leads to the assumption that TT, considered for all mammalians, can be an evolutionary adaptation and may be a result of altered muscle activity, increased mechanical force, and reduced stress on the femoral shaft. Therefore, TT should be used in genomic studies related to the evolution of mammalians. An improvement in study design, the scale of the study, methodology, and the selection of mammalian species may permit more comprehensive analysis and reduce study heterogeneity.
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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 | 0.002 | 0.009 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
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".