RESUMEN
Objective:To describe the imaging findings of patients treated with subchondroplasty (SCP) of the ankle and hindfoot. Materials and Methods: Eighteen patients (10 men, 8 women; age mean 43.1 years [range 20.1-67.7 years]) underwent ankle and hindfoot SCP at a single center over a 14-month period. Imaging data were reviewed retrospectively by 2 radiologists by consensus interpretation, including preoperative radiography (18), computed tomography (CT) (11), and magnetic resonance imaging (MRI) (13) and postoperative radiography (10), CT (4), and MRI (6). Follow-up imaging was acquired 1 month to 1.6 years following SCP. Results: Indications for SCP included symptomatic bone marrow lesions (BMLs) secondary to an osteochondral lesion (OCL) (16/18) or stress fracture (2/18). While focal radiodensity related to the SCP procedure was retrospectively identifiable on postoperative radiography in all except 1 case (10/11), postprocedural findings were not described by the interpreting radiologist in 6/11 cases. On CT, the average injected synthetic calcium phosphate (CaP) volume was 1.15 cm3 (SD = 0.33 cm3); mean CT attenuation of the injectate was 1220 HU (range 1058-1465 HU). In all patients who had pre- and postoperative MRI (5/18), BML size decreased on follow-up MRI. Extra-osseous extrusion of CaP was not seen on postoperative radiography, CT, or MRI. Conclusion: Physicians should be aware of the expanding preoperative indications and postoperative imaging findings of SCP, which is being performed with increasing frequency in the ankle and hindfoot.Levels of Evidence: Diagnostic, Level III: Retrospective cohort study.
Asunto(s)
Tobillo/cirugía , Pie/cirugía , Fracturas por Estrés/cirugía , Procedimientos Ortopédicos/métodos , Adulto , Anciano , Tobillo/diagnóstico por imagen , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Tomografía Computarizada Cuatridimensional , Fracturas por Estrés/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto JovenRESUMEN
Retained unexploded ordnance is only one of the numerous potential threats to coalition forces while deployed in the theater of operations. Though rare, these are also very real dangers for personnel involved with patient care and movement. Principles of management include determination of device type with plain film radiography, minimizing rotational and vibratory movement, and strategic isolation of the patient from the hospital facility, hospital personnel, and other patients. Early identification of this threat, as well as early involvement of the Explosive Ordnance Disposal team is paramount to safe and successful management. We present a case of a deceased patient in the expectant triage category with a delayed identification of retained unexploded ordnance during postmortem preparation.