Peroperační periprotetické zlomeniny u TEP kyčelního kloubu v letech 1995-2009
Notice bibliographique
Résumé
PURPOSE OF THE STUDYThe aim of this prospective study was to investigate whether female gender and revision surgery were significant risk factors for intra-operative periprosthetic fractures during total hip arthroplasty (THA).MATERIAL AND METHODSThe group investigated comprised the patients who, in the period 1995-2009, sustained an intra-operative periprosthetic fracture during primary or revision THA. The patients were treated by a therapeutic procedure based on the Vancouver system. The results were related to the total number of patients undergoing THA in that period, Statistical analysis was performed using Pearson's χ2 test at the 5% significance level.RESULTSIntra-operative periprosthetic fractures occurred in 110 patients (89 women, 21 men). The average age of the patients was 69 years (70 in women and 62 in men). The women significantly outnumbered the men (p < 0.001).In the period under study, 2936 primary and 791 revision THAs were performed; the incidence of all intra-operative fractures was 3%. Intra-operative fractures during primary THA were recorded in 95 patients (3.2%; range in individual years, 0.4 to 5.9%); fractures during revision THA were found in 15 patients (1.9%; range, 0 to 8.0%). This difference was slightly above the set significance level (p = 0.057).The majority of intra-operative fractures were minimal Vancouver type-A fractures in the greater trochanter region. They were recorded in 95 of the 110 patients (86%) with either primary or revision THA. Of the 15 type-B fractures, eight were shown by a detailed evaluation to occur during revision THA. An independent analysis of type-B fractures in relation to all replacements showed that their occurrence was significantly higher in revision than in primary THA (p = 0.006).DISCUSSIONIntra-operative periprosthetic fractures have primarily been studied in terms of their frequency and the cause of their occurrence. Revision surgery and female gender are regarded as risk and predisposing factors. Our results, in accordance with other relevant data, confirmed that serious intra-operative type-B fracture occurred more frequently during revision THA than during primary surgery. It further showed a significantly higher number of periprosthetic fractures in women than in men. However, this finding is affected by the fact that women in general undergo more THAs than men and that the female median life span is longer.The authors consider a careful pre-operative planning and thorough evaluation of all risk factors related to surgery as basic preventive measures.CONCLUSIONSThis continuous 15-year study on patients with intra-operative periprosthetic fractures of the hip has allowed us to conclude that these fractures occur more frequently in women than in men, and that more serious fractures (Vancouver type-B) are significantly more frequent during revision than primary THA. The higher incidence in women is, to a great part, accounted for by osteoporosis of the skeleton in elderly people. In revision THA, poor bone quality plays a role as well as osteolysis due to polyethylene granuloma which may be present.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».