Utility of Intra-articular Hip Injections for Femoroacetabular Impingement
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
BACKGROUND: Femoroacetabular impingement (FAI) is a condition that is becoming increasingly recognized as a common etiology of hip pain in athletes, adolescents, and adults. However, history and clinical examination are often inconclusive in reaching a diagnosis, while imaging often detects asymptomatic abnormalities. Treatment has traditionally been limited to surgery, with the role of conservative management remaining unclear. PURPOSE: To evaluate the utility of the intra-articular hip injection in the diagnosis and management of FAI. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: MEDLINE, EMBASE, and PubMed databases were screened in duplicate for studies published between January 1946 and January 2014. Search terms included femoroacetabular impingement, hip impingement, and intra-articular injection. Quality assessment using the Methodological Index for Non-Randomized Studies (MINORS) scale was completed for all included studies. Data evaluated included study design, study objectives, number of hips, injected product, duration of pain relief, and outcomes measured. RESULTS: Our search yielded 8 studies involving 281 hips. Studies were categorized into diagnostic (4 studies), therapeutic (3 studies), and prognostic (1 study) applications. Patients with FAI and its degenerative sequelae obtained greater relief from diagnostic intra-articular hip injection than those without (P < .05). The diagnostic intra-articular injection performed under ultrasound guidance was better tolerated than injections performed under fluoroscopic guidance (pain rating, 5.6 vs 3.0; P < .1). Intra-articular injection of hyaluronic acid was the most effective at providing pain relief (in 23 patients), with significant improvements of functional outcome measures (Harris Hip Score, visual analog scale) present at 12 months. Pooled results with corticosteroid injection resulted in improvement in only 15% (9/60) of patients at 6 weeks. A negative response to intra-articular hip injection was a strong predictor for poor surgical outcomes. CONCLUSION: The results of this review suggest that (1) pain relief obtained from an intra-articular hip injection supports a diagnosis of FAI, (2) therapeutic relief at 12 months may be achieved, particularly with hyaluronic acid, and (3) a negative response to preoperative injections may predict poor short-term surgical outcomes. Additional large studies are required to build on the small number of studies included in this review, and further delineate the role of intra-articular hip injection in the management of FAI.
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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) | 0.001 | 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 it