Periprosthetic joint infections in femoral neck fracture patients treated with hemiarthroplasty - should we use antibiotic-loaded bone cement?

BACKGROUND: Hemiarthroplasty is the most common treatment in elderly patients with displaced intra-capsular femoral neck fracture (FNF). Prosthetic joint infection (PJI) is one of the most feared and frequent complications post-surgery because of the frail health status of these patients and the need for fast track surgery. Therefore, priorities should lie in effective preventive strategies to mitigate this burden. AIM: To determine how much the implementation of the routine use of antibiotic-loaded bone cement (ALBC) as a relatively easy-to-apply amendment to the surgical practice reduces the infection rate in our hemiarthroplasty cohort. METHODS: We retrospectively assessed all demographic, health status and treatment-related data of our FNF patients undergoing cemented hemiarthroplasty in the period from 2011 to 2017; 241 patients were further analyzed after exclusion of patients with cancer-related sequelae and those who died before the end of the 1-year observation period. The PJI rate as diagnosed on basis of the Musculoskeletal Infection Society (MSIS) criteria 2011 was determined for each included patient and compared in function of the bone cement used for hip stem fixation. Patients were split into a group receiving a plain bone cement in the period from January 2011 to June 2013 (non-ALBC group) and into a group receiving an ALBC in the period July 2013 to December 2017 (ALBC group). Data analysis was performed with statistical software. We further calculated the cost-efficacy of the implementation of routine use of ALBC in the second group balancing the in-hospital infection related treatment costs with the extra costs of use of ALBC. RESULTS: In total 241 FNF patients who received cemented hemiarthroplasty in the period from January 2011 to January 2017 were eligible for inclusion in this retrospective study. There were 8 PJI cases identified in the ALBC group among n = 94 patients, whereas 28 PJI cases were observed in the non-ALBC group among n = 147 patients. The statistical analysis showed an infection risk reduction of 55.3% (in particular due to the avoidance of chronic delayed infections) in the ALBC group (95%CI: 6.2%-78.7%; P = 0.0025). The cost-evaluation analysis demonstrated a considerable cost saving of 3.500 € per patient, related to the implementation of routine use of ALBC in this group. CONCLUSION: Use of ALBC is a potent infection preventive factor in FNF patients receiving cemented hemiarthroplasties. It was further found to be highly cost-effective.

An Innovative Technique for Intraoperative Radiological Assessment of Pelvic and Spine Fractures in Austere Environment.

INTRODUCTION: Managing pelvic and spine fractures in the austere environment can be challenging even for skilled orthopedic surgeons, largely due to the difficulty of radiological visualization of bone structures. We present a simple alternative to the metallic operating table by placing the patient on a spinal board that will allow for a better radiological assessment of these fractures. MATERIAL AND METHODS: A cross-sectional, descriptive, and retrospective study was carried out in the period between 2015 and 2020. The study population was all patients with pelvic o spine fractures, managed surgically using a spinal board in the Spanish Role 2 or in the Spanish Role 4. RESULTS: Seven patients underwent surgery in total using a spinal board, pelvic fracture being the the main diagnosis (n = 6; 85.71%). The distribution of surgical procedures was as follows: percutaneous pedicle screw fixation (one case), external fixation of the pelvis (two cases), percutaneous screw fixation of the pelvis (two cases), and open reduction and internal fixation of the pelvis (two cases). The mean duration of surgical interventions was 52 minutes, and a successful reduction and synthesis of the fracture was obtained in all the patients, with no complications reported. CONCLUSION: A spinal board can be a useful, simple, and effective device for the orthopedic surgeon in the deployed setting. The described technique is simple, fast, and efficient in getting a complete radiological assessment of complex regions such as the pelvis and the spine, facilitating the surgical management of these injuries.

A Comparative Study Between Two Combat Injury Severity Scores.

INTRODUCTION: In recent years, specific trauma scoring systems have been developed for military casualties. The objective of this study was to examine the discrepancies in severity scores of combat casualties between the Abbreviated Injury Scale 2005-Military (mAIS) and the Military Combat Injury Scale (MCIS) and a review of the current literature on the application of trauma scoring systems in the military setting. METHODS: A cross-sectional, descriptive, and retrospective study was conducted between May 1, 2005, and December 31, 2014. The study population consisted of all combat casualties attended in the Spanish Role 2 deployed in Herat (Afghanistan). We used the New Injury Severity Score (NISS) as reference score. Severity of each injury was calculated according to mAIS and MCIS, respectively. The severity of each casualty was calculated according to the NISS based on the mAIS (Military New Injury Severity Score-mNISS) and MCIS (Military Combat Injury Scale-New Injury Severity Score-MCIS-NISS). Casualty severity were grouped by severity levels (mild-scores: 1-8, moderate-scores: 9-15, severe-scores: 16-24, and critical-scores: 25-75). RESULTS: Nine hundred and eleven casualties were analyzed. Most were male (96.37%) with a median age of 27 years. Afghan patients comprised 71.13%. Air medevac was the main casualty transportation method (80.13). Explosion (64.76%) and gunshot wound (34.68%) mechanisms predominated. Overall mortality was 3.51%. Median mNISS and MCIS-NISS were similar in nonsurvivors (36 [IQR, 25-49] vs. [IQR, 25-48], respectively) but different in survivors, 9 (IQR, 4-17) vs. 5 (IQR, 2-13), respectively (P < .0001). The mNISS and MCIS-NISS were discordant in 34.35% (n = 313). Among cases with discordant severity scores, the median difference between mNISS and MCIS-NISS was 9 (IQR, 4-16); range, 1 to 57. CONCLUSION: Our study findings suggest that discrepancies in injury severity levels may be observed in one in three of the casualties when using mNISS and MCIS-NISS.

Multi-stage surgery for a multiple-level spondylodiscitis caused by multidrug-resistant Mycobacterium avium complex.

The objective of this article is to report a rare case of atypical mycobacterial spinal spondylodiscitis with multiple-level involvement and the successful treatment by multi-stage surgical intervention. Reports on the surgical management of atypical mycobacterial spondylodiscitis are lacking. A 71-year-old woman with a confirmed diagnosis of multiple-level spondylodiscitis of L2-L3 and L5-S1 caused by Mycobacterium avium complex (MAC). The patient underwent a two-stage surgical treatment (first: posterior instrumentation; second: anterior debridement with anterior lumbar interbody fusion). At 1 year after surgery, the patient suffered a proximal junctional failure secondary to a vertebral fracture that was solved with a proximal extension of the fusion using a percutaneous technique. The patient was successfully discharged with good pain control, satisfactory correction, no neurologic complications and an overall satisfactory outcome. A rare case of antibiotic-resistant multi-level spondylodiscitis due to MAC was treated successfully with multi-stage surgical treatment. Surgery in this patient group remains challenging due to the technical complexities and the difficulty of choosing the instrumentation levels.

Use of Oxygen Tissue Monitoring in Patients With Compartment Syndrome: Two Clinical Cases and Literature Review.

Compartment syndrome is defined as the pathology caused by the increase of pressure within a muscular compartment to the point where the vascular perfusion necessary for the viability of the tissues included therein is reduced. The diagnosis is established by clinical exam and pressure measurement. Measurement of intracompartmental pressure is an invasive method with no option of easy continuous monitoring. Continuous tissue oximetry, using near-infrared light spectroscopy, can estimate soft-tissue oxygenation several centimeters below the sensor placement. This method of monitoring has been used successfully in the diagnosis of compartment syndrome, presenting itself as a non-invasive method of continuous measurement that can be a very useful alternative in complex situations or doubtful cases. We present two clinical cases of patients with acute compartment syndrome, in which the use of near-infrared light spectroscopy was determinant, both for the diagnosis and to verify the surgical treatment performed.

Descriptive analysis of the medical care performed in the Spanish military Role 1 Medical Treatment Facility deployed in Operation 'Inherent Resolve' (Iraq), 2015-2016.

INTRODUCTION: Operation 'Inherent Resolve' was approved by the United Nations in August 2014 with the objective of suppressing the Islamic State in Iraq and the Levant and increasing the region's stability. The mission of the Spanish military forces within this was to direct training missions for the Iraqi Army. The aim of this study is to analyse the medical care provided in the Spanish Role 1 deployed medical treatment facility during Operation 'Apoyo a Irak'. METHODS: A cross-sectional, descriptive and retrospective study was conducted between 15 December 2015 and 18 November 2016. The study population comprised all personnel treated at the Spanish Role 1 medical treatment facility of the 'Gran Capitan' base in Besmaya, Iraq. RESULTS: During the study period, a total of 2208 consultations were performed, 1547 of which were first consultations. The predominant type of medical care was categorised as 'traumatology' (n=438; 19.8%), followed by 'healing of wounds and minor surgical processes' (n=332; 15%), 'acute upper respiratory tract infections' (n=267; 12%), 'dermatology' (n=214; 9.6%) and 'gastroenterology' (n=214; 9.6%). Twenty-eight patients (1.2%) required care in the upper medical echelon of care, three of whom were urgently evacuated. Oral diseases were the main reason for evacuation to the next medical echelon. Four patients were repatriated to the national territory for medical reasons. One death was recorded due to a vehicle accident. CONCLUSIONS: The results of our study reinforce those found in similar recent international missions in which the Spanish Armed Forces and other allied armies have deployed a Role 1 medical treatment facility. Military physicians deploying on operations such as Iraq should have up-to-date training in emergency and primary care medicine, with special emphasis on basic trauma knowledge and performing minor surgical processes.

Fractura de cadera y laceración de arteria glútea inferior en mujer nonagenaria anticoagulada / Hip fracture and inferior gluteal artery laceration in a nonagenarian woman taking anticoagulants

No disponible