The Extensor Digiti Quinty (EDQ) Opponensplasty—Revisited
Bibliographic record
Abstract
Introduction: The extensor digiti quinty (EDQ) opponensplasty, although previously described, is not widely used by hand surgeons. This tendon transfer was used selectively in cases of combined median-ulnar nerve palsies at our center over the last 4 years, with the primary goal to preserve the extensor indices proprius (EIP) for pinch plasty. We present our technique and the series of 8 patients that underwent EDQ opponensplasty here. Materials and Methods: A retrospective chart review identified patients with combined median-ulnar nerve palsies that underwent EDQ opponensplasty between 2015 and 2019 at our institution by a single surgeon. Primary outcome measures collected were pinch, grip, disabilities of the arm, shoulder, and hand (DASH) scores, thumb position, palmar abduction angle, and thumb span. Secondary outcomes included donor site morbidity and complications. Results: Eight patients (9 hands) ages 21 to 53 underwent EDQ opponensplasty, with an average follow-up of 8 months. Postoperative pinch and grip on the affected side improved from preoperative values. All 9 transfers were functional with the thumb positioned in the palmar plane of the hand. Palmar abduction ranged from 45 to 70 degrees. Motor reeducation was achieved without any difficulty in all patients. No patients had evidence of donor site morbidity. Discussion: The EDQ opponensplasty is satisfactory in achieving thumb opposition in the setting of combined median-ulnar neuropathy, without evidence of donor site morbidity. The EDQ is expendable, has adequate length, an optimal line of pull, minimal donor site morbidity, and leaves the extensor indices proprius available for pinch plasty.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".