Analysis of Radial Head Implant Length with Use of Contralateral Elbow Radiographs
Bibliographic record
Abstract
INTRODUCTION: This article describes a technique in which measurements are obtained from radiographs of the contralateral, normal elbow to predict the magnitude of overlengthening resulting from use of a metallic radial head prosthesis. STEP 1 OBTAIN BILATERAL ELBOW RADIOGRAPHS: Obtain bilateral digital anteroposterior radiographs of the elbows that are orthogonal to the forearm in 45° of flexion and neutral forearm rotation. STEP 2 PERFORM RADIOGRAPHIC MEASUREMENTS OF THE CONTRALATERAL NORMAL ELBOW: Draw the angle on the radiograph of the normal elbow. STEP 3 PERFORM RADIOGRAPHIC MEASUREMENTS OF THE RADIAL HEAD IMPLANT: Draw the same lines and angle and perform the same measurements on the implant radiograph. STEP 4 CALCULATE RADIAL HEAD IMPLANT LENGTH: ) = overlengthening. RESULTS: The radiographic measurement technique was validated in a cadaveric study. WHAT TO WATCH FOR: IndicationsContraindicationsPitfalls & Challenges.
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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 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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".