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Biomedical subjects

Nadim Aslam

Publications and source records attributed to Nadim Aslam.

17 recordsLinked to original sources
PubMed2006

Bone remodeling is different in metaphyseal and diaphyseal-fit uncemented hip stems.

Femoral component stability in uncemented total hip arthroplasties depends on periprosthetic bone remodeling. Stem design is an important factor influencing bone remodeling, however the design that promotes the most bone remodeling is unclear. We examined metaphyseal and diaphyseal-fit stems to determine the effect of stem design on bone remodeling and stability. Twenty-three patients who had total hip arthroplasties (28 hips) with metaphyseal-fit stems were matched with 27 patients (32 hips) who had uncemented total hip arthroplasties with diaphyseal-fit stems. We assessed preoperative radiographs for canal fill, canal shape, and bone quality. We then assessed postoperative radiographs for periprosthetic bone remodeling including spot welds, cortical hypertrophy, and pedestal formation. Patients were examined clinically using a modified Harris hip score. Patients with metaphyseal stems had increased cortical hypertrophy 1 year postoperatively. However, there was no functional difference 2 years postoperatively. Both stem designs resulted in bone remodeling by 2 years postoperatively with similar clinical results.

Adult↗
PubMed2006

Total knee arthroplasty: the future.

Few areas in orthopaedics have evolved so dramatically over the past few decades as our knowledge of knee physiology, knee kinematics, and knee replacement surgery. This article addresses major breakthroughs in knee replacement surgery, the thought process behind these concepts, and their impact on clinical practice. It focuses on compartmental arthroplasty, use of minimally invasive surgery, advances in biomaterials, and biological solutions for treating arthritis. Compartmental knee replacements are gaining popularity, especially for medial compartment arthritis. Minimally invasive surgery (i.e., quadriceps sparing arthroplasty) has become very popular in the last few years and is being used routinely for unicompartmental knee replacement and increasingly used for total knee replacement. Computer-assisted surgery has the ability to help the surgeon place the components in the desired position, thereby avoiding component malpositioning, which can cause pain, instability, limited range of movement, excessive polyethylene wear, and subsequent implant loosening. Recent advances in the metallurgy have led to the introduction of tantalum trabecular metal which offers several advantages over other current conventional materials used for implants. Expanding knowledge regarding cartilage biochemistry and the pathogenesis of osteoarthritis has focused the research on slowing the progression of osteoarthritis and promoting cartilage matrix synthesis. Perichondrial transplantation as well as periosteal transplantation have been tried by a few investigators but they have limited and temporary success. Autologous chondrocyte implantation is another technique that is gaining popularity. The chondrocytes harvested from the patient are cultured and reimplanted after 3-4 weeks of culturing. In the future, we are likely to see advances in diagnosis as well as management of osteoarthritis. The treatment modalities will probably evolve at the cellular level and it will not be long before a patient-specific medication can be given to a asymptomatic patient in order to prevent development of osteoarthritis. Patients with end-stage osteoarthritis will be offered a combination of treatments (e.g., partial replacement of one compartment or localized cartilage repair if there is localized cartilage defect in the other compartment).

Arthroplasty, Replacement, Knee↗
PubMed2005

Evaluation of Internet use by paediatric orthopaedic outpatients and the quality of information available.

Parents use the Internet increasingly for information about their children's medical problems. There is no quality control for medical information content. The goals of our study were to assess Internet awareness by families seen in paediatric orthopaedic outpatients departments and the type, quality and reliability of information available, using clubfoot as an example. Parents accompanying children to the outpatient's clinic were surveyed regarding the use of the Internet for medical information. They were asked about their ability to use the Internet, and whether this helped the consultation. To assess the quality of information available, the search phrases 'clubfoot' and 'club foot' were placed in the five most commonly used World Wide Web search engines. Web sites were evaluated for authorship, content and informational value using our own agreed scoring system, ranging from 0-100 points. Sixty-one percent of the questionnaires were completed, the mothers completed 67%. Eighty-four percent reported access to the Internet. Most found their searches useful and 26% were reminded of questions to ask at consultation. When a search for 'clubfoot' was carried out we found 11% of web sites were affiliated to academic institutions. There was a significant difference when the terms 'clubfoot' or 'club foot' were searched. Twenty-eight percent offered conventional information. Thirty-six percent of web sites were not related to congenital talipes equinovarus. The average information value was 26 points (0-98). Parents frequently use the Internet for information about paediatric orthopaedic consultations, prior to consultation. The quality of clubfoot information on the Internet is variable. The development of academic-based websites should be encouraged, as these offer the most useful information.

Adult↗
PubMed2004

A review of tissue glue use in facial lacerations: potential problems with wound selection in accident and emergency.

OBJECTIVES: The purpose of this study was to review the types of facial lacerations for which tissue glue was used as a closure method and assess whether current evidence was being followed. METHODS: A retrospective analysis of facial lacerations presenting to an adult Accident and Emergency Department was made over a 6-month period. RESULTS: Out of 200 facial lacerations, 45 were closed using tissue glue. The mean length of the wounds was 2.05 cm, with a range of 0.5-6 cm; 42 were linear and three were non-linear. Senior house officers closed 16 wounds, middle grade doctors closed 19, emergency nurse practitioners closed seven, and consultants closed three. Six cases were closed against current evidence (13%). This included three lacerations that were non-linear and three lacerations greater than 4 cm in length. Four out of six of these cases were closed by senior house officer grades (80%). CONCLUSION: The lack of clarity over the use of tissue glue for facial wounds may be attributable to a lack of awareness and training, and the misinterpretation of randomized trials. Greater awareness is needed of the role of tissue glue, especially among senior house officers.

Accidents↗
PubMed2004

Microscooter injuries in the paediatric population.

OBJECTIVES: To illustrate the types of injuries seen by the accident and emergency department as a result of the use of non-motorized 'microscooters' in children, and to increase awareness of scooter-related triplane fractures of the ankle. STUDY DESIGN: A retrospective study conducted in an accident and emergency department of a district general hospital on all children who had a scooter-related limb injury over a 6-month period and were referred for orthopaedic review. METHODS: The analysis involved a case note review. Information recorded included the injury sustained, protective equipment worn at the time of the accident and management by the orthopaedic team. RESULTS: Scooter injuries accounted for 10 fractures in this period. There were three 'triplanar' injuries, which required operative fixation, and three injuries requiring manipulation under anaesthesia. No protective gear was worn by any of the patients. CONCLUSION: The popularity of microscooters seems to represent a significant risk of bony injury in the paediatric population. Medical personnel who manage acute paediatric trauma should be aware of scooter-related triplanar ankle injuries.

Adolescent↗
PubMed2004

Femoral neck stress fracture in a sanitary worker.

Stress fractures of the femoral neck are uncommon, it is important to have a high index of suspicion in young active people who perform repetitive vigorous activity or have recently had an increase in frequency of such activity. We report a case of femoral neck stress fracture in a sanitary worker which was treated successfully with a dynamic hip screw.

Adult↗
PubMed2004

Functional outcome following internal fixation of intraarticular fractures of the distal humerus (AO type C).

The aim of this study was to evaluate the functional outcome following internal fixation of intraarticular fractures of the distal humerus (AO Type C) with a minimum follow-up of two years. A retrospective evaluation with prospective clinical review was carried out. Twenty-six consecutive patients with fractures of the distal humerus were treated over a 31-month period. Their mean age was 56 years (range, 18-82). Six patients were not available for final clinical review. Analysis of the results were based on the medical records, pre-operative and postoperative radiographs of all 26 patients and clinical review of 20 patients at a mean follow-up of 35 months (range, 24-48 months). Twenty-six fractures were fixed using the AO double column plating techniques. Radiographic evaluation of the quality of reduction was carried out using a grading system. Clinical outcome was assessed using the Broberg and Morrey functional rating index. Fourteen patients (70%) had an excellent or good outcome, five patients (25%) a fair outcome and one patient (5%) had a poor result. Three patients (15%) underwent a second procedure for hardware removal. The mean arc of flexion was 112 degrees (range, 85 to 122). Mean pronation was 75 degrees (range, 60-82) and supination was 76 degrees (range, 60-80). No patients had achieved normal grip strength; the mean grip strength was 82% (range, 46-90%) compared to the uninjured side. Fifteen patients (75%) were able to return to their pre-injury level of occupation and activity. Seventeen patients (85%) were satisfied with the final outcome. We conclude that internal fixation of intraarticular fractures of the distal humerus is an effective procedure with an excellent or good functional outcome in most patient age groups. Patients have a high level of satisfaction and the majority return to their previous level of activity.

Adolescent↗
PubMed2004

The floating shoulder.

Ipsilateral fracture of the clavicle and scapula is considered to be a relatively rare injury. It is perceived as an unstable injury and is at times called floating shoulder. Understanding of the role played by the bony and ligament stability is important to identify true floating shoulder injury and to offer an appropriate treatment. Both conservative and surgical treatment modalities are described in the literature. Recent literature has shown the important role played by the ligaments in providing stability in ipsilateral fracture of the clavicle and scapula. In a true floating shoulder injury, it seems important to stabilise the injury by fixation of the scapular fracture. This article reviews the literature to identify the injury pattern of true floating shoulder and to look at the current evidence for the treatment of such an injury.

Clavicle↗
PubMed2004

Reliability of preoperative templating in total knee arthroplasty.

The purpose of this study was to determine the reliability of preoperative templating in primary total knee arthroplasty and the influence of the seniority of the surgeon on templating. A retrospective study of 25 randomly selected total knee replacements was undertaken, with templating of preoperative radiographs by four surgical staff members. These included a consultant, a specialist registrar and two senior house officers. Reliability for an exact match between template size and implant actually used was 49% for the femoral component and 67% for the tibial component. The statistical agreement between templated size and actual implant size was classed as only fair to moderate. There was no statistical difference in templating reliability between junior and senior surgical staff. These results indicate that the current system of templating for total knee arthoplasties is prone to error and can only be used as an approximate guide.

Aged↗