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GNRI and Rectus Femoris Muscle Thickness in Older Patients Undergoing Hip Fracture Surgery

6 agosto 2026 aggiornato da: Oznur Demiroluk, Fatih Sultan Mehmet Training and Research Hospital

Prognostic Value of the Geriatric Nutritional Risk Index and Ultrasonographic Rectus Femoris Muscle Thickness in Older Patients Undergoing Hip Fracture Surgery: A Prospective Observational Study

This prospective observational study will evaluate whether nutritional risk and reduced muscle mass are associated with postoperative outcomes in adults aged 65 years or older undergoing surgery for hip fracture.

Nutritional risk will be assessed using the Geriatric Nutritional Risk Index (GNRI), which is calculated from routine preoperative serum albumin, body weight, and ideal body weight. Rectus femoris muscle thickness will be measured before surgery using a brief, noninvasive ultrasound examination of the non-fractured thigh.

Participants will receive routine clinical care, and no treatment or anesthesia method will be assigned by the study. Clinical information will be collected from hospital records, including postoperative length of hospital stay, surgical site infection, and mortality. Survival status will be evaluated at 30 and 90 days after surgery using hospital records and/or telephone follow-up.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

This is a single-center, prospective observational cohort study involving consecutive patients aged 65 years or older who are scheduled to undergo surgical treatment for hip fracture at Fatih Sultan Mehmet Training and Research Hospital. The study will investigate the prognostic value of the Geriatric Nutritional Risk Index (GNRI) and ultrasonographic rectus femoris muscle thickness (RF-MT) for postoperative clinical outcomes.

After informed consent is obtained, demographic and preoperative clinical data will be recorded, including age, sex, height, weight, body mass index, comorbidities, American Society of Anesthesiologists physical status, fracture type, serum albumin, hemoglobin, C-reactive protein, and creatinine.

The GNRI will be calculated using the following formula:

GNRI = [1.489 × serum albumin (g/L)] + [41.7 × current body weight/ideal body weight].

When the ratio of current body weight to ideal body weight is greater than 1, the ratio will be set to 1. Participants will be classified according to the original GNRI categories: no nutritional risk (GNRI greater than 98), low nutritional risk (GNRI 92 to 98), and moderate or severe nutritional risk (GNRI less than 92).

Rectus femoris muscle thickness will be measured preoperatively on the non-fractured side using a high-frequency linear ultrasound probe. The measurement will be performed with the participant in the supine position at the midpoint between the anterior superior iliac spine and the upper border of the patella. Minimal probe pressure will be applied to avoid muscle compression. After the rectus femoris muscle is visualized in the transverse plane, muscle thickness will be measured as the greatest vertical distance between the superficial and deep fascia. Three measurements will be obtained, and their mean value will be used for analysis. All measurements will be performed by the same investigator experienced in ultrasonography.

Perioperative and postoperative data will include surgical procedure, anesthesia technique, duration of surgery, estimated blood loss, blood transfusion, intensive care unit admission, postoperative hospital length of stay, surgical site infection, and all-cause mortality at 30 and 90 days.

Postoperative hospital length of stay will be calculated as the number of days between surgery and hospital discharge. Prolonged postoperative hospital stay will be defined as a stay exceeding the 75th percentile of postoperative length of stay in the completed study cohort. Surgical site infections will be evaluated according to the Centers for Disease Control and Prevention criteria. Mortality status will be determined from hospital records and/or telephone follow-up.

No study-specific medication, anesthesia technique, surgical treatment, or additional blood sampling will be administered. The only study-specific procedure will be the noninvasive preoperative ultrasound measurement. Associations between GNRI, RF-MT, and postoperative outcomes will be evaluated using multivariable regression and receiver operating characteristic curve analyses.

Tipo di studio

Osservativo

Iscrizione (Stimato)

120

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

      • Istanbul, Turchia (Türkiye), 34000
        • University of Health Sciences, Fatih Sultan Mehmet Training and Research Hospital
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto più anziano

Accetta volontari sani

No

Metodo di campionamento

Campione non probabilistico

Popolazione di studio

The study population will consist of consecutive patients aged 65 years or older who are admitted to Fatih Sultan Mehmet Training and Research Hospital with a hip fracture and are scheduled to undergo surgical treatment. Eligible participants of both sexes will be enrolled after informed consent is obtained. Participants will receive routine perioperative clinical care without any treatment allocation by the study.

Descrizione

Inclusion Criteria:

  • Age 65 years or older
  • Scheduled to undergo surgical treatment for hip fracture
  • Provision of informed consent by the participant or, when applicable, a legally authorized representative

Exclusion Criteria:

  • Pathological fracture or fracture related to malignancy
  • Advanced neuromuscular disease
  • Active infection
  • Planned revision surgery
  • Lower limb amputation or severe deformity preventing rectus femoris muscle thickness measurement
  • Inability to obtain informed consent from the participant or a legally authorized representative

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

Coorti e interventi

Gruppo / Coorte
Intervento / Trattamento
Geriatric Hip Fracture Cohort
Patients aged 65 years or older undergoing surgical treatment for hip fracture. Preoperative nutritional risk will be assessed using the Geriatric Nutritional Risk Index, and rectus femoris muscle thickness will be measured by ultrasound on the non-fractured side. Participants will receive routine clinical care, and no treatment, anesthesia technique, or surgical intervention will be assigned by the study.
Preoperative nutritional risk will be assessed using the Geriatric Nutritional Risk Index (GNRI), calculated from routine serum albumin, current body weight, and ideal body weight. Participants will be categorized as having no nutritional risk (GNRI greater than 98), low nutritional risk (GNRI 92 to 98), or moderate/severe nutritional risk (GNRI less than 92). The assessment will not alter routine clinical care.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of Participants With Prolonged Postoperative Hospital Stay
Lasso di tempo: From the date of surgery through discharge from the index hospitalization, assessed up to 30 days after surgery.
Postoperative hospital length of stay will be calculated as the number of days from the date of surgery to the date of discharge. Prolonged postoperative hospital stay will be defined as a length of stay exceeding the 75th percentile of the postoperative length-of-stay distribution in the completed study cohort. The outcome will be reported as the number and percentage of participants meeting this criterion.
From the date of surgery through discharge from the index hospitalization, assessed up to 30 days after surgery.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of Participants With Surgical Site Infection
Lasso di tempo: From the date of surgery through 90 days after surgery
Surgical site infection will be assessed according to the Centers for Disease Control and Prevention criteria. Superficial and deep incisional infections will be identified using clinical findings, microbiological culture results, radiological findings, and/or a clinical diagnosis made by an infectious diseases or orthopedic specialist. The outcome will be reported as the number and percentage of participants with a surgical site infection.
From the date of surgery through 90 days after surgery
Number of Participants With 30-Day All-Cause Mortality
Lasso di tempo: within 30 days after surgery
Vital status will be determined using hospital records and/or telephone follow-up. The outcome will be reported as the number and percentage of participants who die from any cause within 30 days after surgery.
within 30 days after surgery
Number of Participants With 90-Day All-Cause Mortality
Lasso di tempo: Within 90 days after surgery
Vital status will be determined using hospital records and/or telephone follow-up. The outcome will be reported as the number and percentage of participants who die from any cause within 90 days after surgery.
Within 90 days after surgery

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 agosto 2026

Completamento primario (Stimato)

1 maggio 2027

Completamento dello studio (Stimato)

1 giugno 2027

Date di iscrizione allo studio

Primo inviato

3 agosto 2026

Primo inviato che soddisfa i criteri di controllo qualità

6 agosto 2026

Primo Inserito (Effettivo)

7 agosto 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

7 agosto 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

6 agosto 2026

Ultimo verificato

1 agosto 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • FSMTRH-GNRI
  • 2026/07-41 (Altro identificatore: University of Health Sciences, Fatih Sultan Mehmet Training and Research Hospital Scientific Research Ethics Committee)

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .