Hip joint subluxation after selective dorsal rhizotomy for spastic cerebral palsy
Bibliographic record
Abstract
OBJECT: The effects of selective dorsal rhizotomy (SDR) procedures on the hip joints of children with spastic cerebral palsy (CP) are not well described. This study was performed to determine the incidence of hip subluxation in children with CP who underwent SDR at a single institution. METHODS: The study group comprised 82 patients (164 hip joints) with a mean follow up of 3.9 years. Forty-four patients had spastic diplegia (53.6%), 35 had spastic quadriplegia (42.7%), two had spastic triplegia (2.4%), and one had spastic hemiplegia (1.2%). The mean patient age at SDR was 5.2 +/- 2.4 years. Preoperative and postoperative hip radiographs were reviewed and the femoral head center edge (CE) angles were recorded. The mean pre- and postoperative right CE angles were 14.1 and 17.2 degrees, respectively, and those of the left were 13.6 and 15.1 degrees, respectively. Considering a change in CE angle greater than 5 degrees as clinically significant, 72 hips (43.5%) remained unchanged, 63 (38.4%) improved, and 29 (17.7%) worsened. Of a number of preoperative variables, including age at time of surgery, Gross Motor Function Classification System (GMFCS) level, ambulatory status, extent of hip subluxation, preoperative scoliosis, and asymmetry of hip subluxation, only GMFCS level was associated with worsening of hip subluxation. CONCLUSIONS: Selective dorsal rhizotomy is more likely to have a positive effect or no effect on hip joint subluxation rather than to have a negative effect. More severe involvement, as measured using the GMFCS, may predispose to worsening of hip subluxation after SDR.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".