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Biomedical subjects

F S Haddad

Publications and source records attributed to F S Haddad.

At least 91 records · Page 5Linked to original sources

Arteriovenous fistula after fibular osteotomy leading to recurrent haemarthroses in a total knee replacement.

We present a patient with an arteriovenous fistula of the peroneal artery acquired after a left dome tibial osteotomy with midshaft fibular osteotomy. He had subsequently had a total knee replacement on that side. The arteriovenous malformation was only diagnosed when he represented with symptoms and signs of venous hypertension with sterile recurrent haemarthroses in the left knee. Percutaneous obliteration of the fistula, by a combination of coil embolisation and balloon occlusion, cured the symptoms.

Angiography, Digital Subtraction↗

Hypersensitivity in aseptic loosening of total hip replacements. The role of constituents of bone cement.

Aseptic loosening is seen in a significant proportion of cemented total hip replacements (THR). In a small subgroup of patients who suffer early loosening polyethylene debris is unlikely to be responsible. We recently reported one case of allergic contact dermatitis to N,N-dimethylparatoluidine (DMT), an accelerator used in bone cement. We have therefore investigated this using skin-patch tests to a variety of substances including metals, polyethylene and the separated individual components of Simplex cement. We studied 70 patients, 15 with aseptic loosening less than two years after THR, 25 with satisfactory long-term cemented fixation, five with infected loosening of cemented THRs and 25 awaiting hip arthroplasty. We found seven positive reactions to DMT, all of them in patients with the rapid onset of aseptic loosening. Allergy to DMT is recognized in the dental profession in respect of the 'denture sore mouth' syndrome, and could also be an occupational hazard since some industrial glues contain DMT. Our results suggest the need for awareness of possible previous dental or occupational exposure of the constituents of bone cement. We recommend the use of skin-patch testing in high-risk cases.

Aged↗

Acute calcific tendinitis of the rectus femoris.

We report six caucasian patients who had acute pain in the hip and marked limitation of all movement of the joint. Plain radiographs and CT of the pelvis showed calcification within the reflected head of rectus femoris. All six responded to accurate CT-controlled injections of corticosteroid and local anaesthetic with dramatic and prolonged pain relief, although one required a second injection for recurrence of symptoms after two months.

Acute Disease↗

Value of intraoperative image intensifier prints in trauma surgery.

We have studied the use of image intensification in a trauma theatre over a period of 6 months with particular reference to the acquisition of intraoperative image intensifier thermal prints instead of formal radiographs. The quality of the prints and the savings generated have been assessed. During the study period, 476 patients underwent orthopaedic trauma procedures. The image intensifier was used for intraoperative screening in 280 patients. In 278 of these a thermal print was obtained. This was used, instead of formal check radiographs, to plan further management in 210 patients (75%). In 68 patients, the printout was insufficient in its coverage of the operated area, and a check radiograph was also obtained. In no case did the clarity of the thermal image hinder accurate interpretation. We believe that thermal images are a useful substitute for formal postoperative radiographs in many trauma cases, and that, with notable exceptions, their use could decrease costs, reduce patient discomfort and radiation dose and spare overloaded radiology services.

Bone and Bones↗

Forearm fractures in children: avoiding redisplacement.

We reviewed eighty-six children with closed extra-articular distal forearm fractures to determine the factors responsible for early redisplacement. The most important favourable prognostic factor was a perfect anatomical reduction on the immediate post-reduction radiograph. This was far more likely when the manipulation was performed by an experienced surgeon.

Adolescent↗

Epidermoid tumors of the fourth ventricle.

BACKGROUND: Epidermoids of the brain are rare tumors. Their fourth ventricle localization is about the rarest localization. No series of such tumors has been reported. Their manifestations and management are therefore not well understood. METHODS: Four epidermoid tumors of the fourth ventricle were collected over a period of 39 years from the neurosurgical units of the American University of Beirut Medical Center and the Orient Hospital. These were retrospectively studied and the medical literature reviewed. RESULTS: Epidermoids of the brain form 1% of all brain tumors, and those located in the fourth ventricle are 16.7% of the epidermoids. They rarely present symptoms of increased intracranial pressure. They commonly present in adults with only cerebellar signs. The duration of symptoms may be short, medium, or long. The diagnosis, when clinically suspected, should be confirmed by magnetic resonance imaging. An early diagnosis is the key for a good outcome. CONCLUSION: Although a rare condition, these tumors can be lethal if not treated. Total excision should be attempted. Because this tumor is very slow-growing, a near-total excision is acceptable in cases where complete removal may endanger function or life.

Adult↗

Spinal cord missile injuries during the Lebanese civil war.

BACKGROUND: Spinal cord injuries due to penetrating wounds are not uncommon. The management of these injuries remains controversial especially with regard to the effect of laminectomy on the neurological outcome. METHODS: Between 1980 and 1989, 64 patients injured by bullets and shell fragments to the spinal cord were reviewed. There were 58 males and 6 females: 24 injuries (37.5%) involved the cervical spine, 37 (57.8%) the dorsal spine, and 3 (4.7%) the lumbar spine. One group (group I) consisted of 47 patients (73.4%) who had immediate and complete sensorimotor loss of function. Another group (group II) contained 13 patients (20.3%) who presented with incomplete and non-progressive spinal cord deficit. One patient (1.6%) (group III) had progressive spinal cord deficit. Three patients (4.7%) (group IV) had injuries to the cauda equina. RESULTS: The results were analyzed using a chi-squared test when possible. In group I, 20 patients (42.5%) underwent laminectomy with no recovery, and 27 (57.5%) were treated conservatively, with 1 patient (3.7%) achieving marked improvement (p > 0.05). In group II, 3 patients (23.1%) underwent laminectomy with the 3 (100%) improved, and 10 patients (76.9%) were treated conservatively, with 8 (80%) recovering (p > 0.05). CONCLUSIONS: Our data in groups I and II agree with previously published literature that shows no significant advantage of performing laminectomies following penetrating spinal cord injuries. Moreover, group I patients had a poor prognosis whether laminectomy was done or not, and group II patients had a good prognosis whether laminectomy was done or not.

Adolescent↗

An audit of orthopaedic training.

The changing face of clinical practice in general, and of junior doctors' expectations in particular, will inevitably alter the length and nature of higher training. Greater awareness and tighter control of this will therefore be necessary. This analysis of the curricula vitae of 50 orthopaedic surgeons-in-training who were appointed to senior registrar posts at The Royal National Orthopaedic Hospital, has allowed identification of the 'normal' pattern of educational achievement against which individuals may now be assessed. This has potential wide-ranging educational and financial implications.

Adult↗

Femoral nerve block in extracapsular femoral neck fractures.

We randomised 50 patients with extracapsular fractures of the femoral neck to receive either a bupivacaine femoral nerve block or systemic analgesia alone. A femoral nerve block was found to be an easy and effective procedure which significantly reduced perioperative analgesic requirements and postoperative morbidity.

Aged↗