Asif Saifuddin

STUDY DESIGN: The location of pedicle screws in relation to adjacent superior segment facet joints in 106 patients after lumbar spinal fusion was assessed using computed tomography and plain radiographs.

OBJECTIVES: To document the incidence of adjacent superior segment facet joint violation following transpedicular instrumentation in the lumbar spine.

SUMMARY OF BACKGROUND DATA: Review of the literature failed to show any documented study examining this incidence.

METHODS: A total of ...

The availability of lumbar interbody cages has fuelled renewed interest in interbody fusion. Despite this, there is no consensus regarding the best non-invasive method for evaluation of interbody fusion, especially where cages have been used. The purpose of this study was to determine whether high-quality thin-slice (1- to 3-mm) computed tomography (CT) scans allow proper evaluation of interbody fusion through titanium cages. Patients undergoing lumbar interbody fusion were prospectively ...

STUDY DESIGN: A consecutive case retrospective chart and radiographic review.

OBJECTIVES: To determine the incidence of nine radiographic dystrophic features acquired during the process of modulation, and to analyze the statistical correlation of these acquired dystrophic features with clinical progression of a spinal deformity.

SUMMARY OF BACKGROUND DATA: In patients with neurofibromatosis, spinal deformities with seemingly few initial dystrophic features have shown a tendency to ...

AIMS: To identify the relationship between depth and size of soft-tissue mass lesions relative to histological diagnosis in a range of malignant neoplastic, benign neoplastic, and non-neoplastic conditions on magnetic resonance imaging (MRI).

METHOD: The MRI findings of 571 consecutive patients referred to a supra-regional orthopaedic oncology unit with a suspected soft-tissue neoplasm were reviewed and included in the study. The patient age, histological diagnosis, lesion size, ...

STUDY DESIGN: Retrospective review of magnetic resonance imaging and discography in patients investigated for low back pain before spinal fusion.

OBJECTIVE: To determine the sensitivity of magnetic resonance imaging in the detection of painful anular tears manifested by the high-intensity zone.

SUMMARY OF BACKGROUND DATA: Two studies have produced results showing that magnetic resonance imaging has a high specificity for the detection of painful anular tears manifested by a ...

STUDY DESIGN: Sequential study of magnetic resonance images of the lumbar spine.

OBJECTIVES: To determine the variation in position of the conus medullaris in a living adult population without spinal deformity.

SUMMARY OF BACKGROUND DATA: Cadaveric studies have shown that the position of the conus medullaris in the adult most commonly is located at L1-L2. There have been several studies documenting the changing level of the conus throughout infancy and childhood, but there is no detailed ...

Abstract The vertebral end-plate has been identified as a possible source of discogenic low back pain. MRI demonstrates end-plate (Modic) changes in 20–50% of patients with low back pain. The aim of this study was to investigate the association between Modic changes on MRI and discogenic back pain on lumbar discography. The MRI studies and discograms of 58 patients with a clinical diagnosis of discogenic back pain were reviewed and the presence of a Modic change was correlated with pain ...

ObjectivesTo identify magnetic resonance imaging (MRI) features which differentiate low-grade chondral lesions (atypical cartilaginous tumours/grade 1 chondrosarcoma) from high-grade chondrosarcomas (grade 2, grade 3 and dedifferentiated chondrosarcoma) of the major long bones.MethodsWe identified all patients treated for central atypical cartilaginous tumours and central chondrosarcoma of major long bones (humerus, femur, tibia) over a 13-year period. The MRI studies were assessed for ...

BACKGROUND: Different treatment strategies for low-grade chondrosarcomas are reported in the literature with variable outcomes. The aim of this study was to assess the oncological and functional outcomes associated with intralesional curettage and cementation of the lesion as a treatment strategy.

PATIENTS AND METHODS: We performed a retrospective review of 39 consecutive patients with intramedullary low-grade chondrosarcoma of long bones treated by intralesional curettage and ...

The commonest site of osseous tuberculosis is the spine. Most vertebral lesions are contiguous. Current research indicates the incidence of multiple level noncontiguous vertebral tuberculosis is 1.1% to 16%. The aim of this study was to identify the incidence of multiple level noncontiguous vertebral tuberculosis using whole spine magnetic resonance imaging (MRI). A retrospective review was undertaken of case notes and whole spine MRI studies of all acute spinal infection cases that ...

STUDY DESIGN: A retrospective study of 44 museum cases of spinal osteoid osteoma or osteoblastoma and a meta-analysis using 421 additional cases from a review of the literature.

OBJECTIVES: To identify the factors that are associated with the development of scoliosis in these patients.

SUMMARY OF BACKGROUND DATA: Painful scoliosis is a well recognized presentation of spinal osteoid osteoma and osteoblastoma and is considered to be secondary to pain-provoked muscle spasm on the side of ...

Injuries of the posterior cruciate ligament (PCL) and posterolateral corner (PLC) of the knee are less common than those of the anterior cruciate ligament (ACL) and their significance is often under-appreciated in the acute setting. Even when recognised, knowledge of the natural history and outcome of treatment has lagged behind that of the ACL and has led to confusion over the indications for operative treatment. Recent developments in the understanding of the anatomy and biomechanics ...

ObjectiveTo determine the prevalence and diagnostic significance of fluid-fluid levels (FFLs) in focal bone lesions.Design and patientsClinical and radiological details of 738 consecutive patients referred with focal lesions of bone and who had undergone MRI were reviewed. FFLs were identified in 83 (11.2%). The proportion of the lesion occupied by FFLs was estimated, based on imaging in all available planes, as <1/3, 1/3–2/3, >2/3 but not the entire lesion, and complete. The degree of ...

Study Design. The location of pedicle screws in relation to adjacent superior segment facet joints in 106 patients after lumbar spinal fusion was assessed using computed tomography and plain radiographs. Objectives. To document the incidence of adjacent superior segment facet joint violation following transpedicular instrumentation in the lumbar spine. Summary of Background Data. Review of the literature failed to show any documented study examining this incidence. Methods. A total of ...

ObjectiveTo compare whole-body MRI (WB-MRI) at 1.5/3T and bone scintigraphy in the skeletal staging of Ewing sarcoma (ES) of bone.MethodsAll patients with a histological diagnosis of ES of bone between 2007 and 2018 were retrospectively reviewed. The analysis included gender, mean age, skeletal distribution, and prevalence of skeletal metastases on WB-MRI and bone scintigraphy.ResultsThe study group comprised 182 patients with a mean age of 18.0 years (range 2–56 years), 126 males and 56 ...