Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add more filters










Database
Language
Publication year range
1.
Skeletal Radiol ; 43(4): 513-22, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24477425

ABSTRACT

OBJECTIVE: To assess the safety and effectiveness of image-guided radiofrequency ablation (RF ablation) in the treatment of chondroblastomas as an alternative to surgery. MATERIALS AND METHODS: Twelve patients with histologically proven chondroblastoma at our institution from 2003 to date. We reviewed the indications, recurrences and complications in patients who underwent RF ablation. RESULTS: Twelve patients were diagnosed with chondroblastoma. Out of these, 8 patients (6 male, 2 female, mean age 17 years) with chondroblastoma (mean size 2.7 cm) underwent RF ablation. Multitine expandable electrodes were used in all patients. The number of probe positions needed varied from 1 to 4 and lesions were ablated at 90 °C for 5 min at each probe position. The tumours were successfully treated and all patients became asymptomatic. There were no recurrences. There were 2 patients with knee complications, 1 with minor asymptomatic infraction of the subchondral bone and a second patient with osteonecrosis/chondrolysis. CONCLUSION: Radiofrequency ablation appears to be a safe and effective alternative to surgical treatment with a low risk of recurrence and complications for most chondroblastomas. RF ablation is probably superior to surgery when chondroblastomas are small (less than 2.5 cm) with an intact bony margin with subchondral bone and in areas of difficult surgical access.


Subject(s)
Bone Neoplasms/surgery , Catheter Ablation/adverse effects , Catheter Ablation/methods , Chondroblastoma/surgery , Neoplasm Recurrence, Local/prevention & control , Osteonecrosis/etiology , Adolescent , Adult , Bone Neoplasms/complications , Bone Neoplasms/diagnosis , Chondroblastoma/complications , Chondroblastoma/diagnosis , Female , Humans , Male , Neoplasm Recurrence, Local/diagnosis , Osteonecrosis/prevention & control , Treatment Outcome , Young Adult
2.
Skeletal Radiol ; 41(12): 1559-66, 2012 Dec.
Article in English | MEDLINE | ID: mdl-22639203

ABSTRACT

PURPOSE: The objective of this study was to establish the prevalence and significance of ossicles of lumbar articular facets (OLAF) in young athletes with backache diagnosed by multi-detector computed tomography (MDCT). MATERIALS AND METHODS: The MDCT examinations of the lumbar spine carried out for suspected spondylolysis on 46 consecutive symptomatic young athletes presenting to a sports injury clinic over a 1-year period were retrospectively reviewed. OLAF study included detailed correlation with the structural and morphological stress features of the posterior neural arches. This was then compared with a control group composed of 39 patients. RESULTS: Twenty-three OLAF were identified in 15 patients. Eleven of the 15 patients with ossicles had posterior element stress changes (PEST)/pars defects. In the control group, two OLAF were identified in two patients, one demonstrating PEST changes. CONCLUSION: The high prevalence of OLAF in young symptomatic athletes compared with the asymptomatic control group is indicative of stress fractures. The non-united articular process fractures should be regarded as part of the spectrum of stress-induced changes in the posterior neural arch in the same way as spondylolysis. MDCT with volumetric acquisition and multi-planar reformation is the most reliable investigation in the diagnosis of OLAF. KEY POINTS: 1) This CT study supports a traumatic aetiology for lumbar articular facets ossicles. 2) OLAF represent part of a spectrum of stress-induced changes in the posterior neural arch. 3) OLAF are associated with typical spondylolysis. 4) OLAF can be overlooked on reverse gantry angle computed tomography (RG-CT). 5) OLAF may account for some of the discrepancy between radionuclide and RG-CT studies.


Subject(s)
Arthrography/methods , Back Pain/diagnosis , Lumbar Vertebrae/abnormalities , Lumbar Vertebrae/diagnostic imaging , Spondylolysis/diagnostic imaging , Tomography, X-Ray Computed/methods , Zygapophyseal Joint/abnormalities , Adolescent , Adult , Back Pain/etiology , Child , Diagnosis, Differential , Female , Humans , Male , Reference Values , Reproducibility of Results , Sensitivity and Specificity , Spondylolysis/complications , Young Adult
SELECTION OF CITATIONS
SEARCH DETAIL
...