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Biomedical subjects

J Lauritzen

Publications and source records attributed to J Lauritzen.

At least 19 recordsLinked to original sources
PubMed1990

[Results after primary suture of rupture of the anterior cruciate ligament. A 4-5 year follow-up].

Forty patients (40 knees) with acute isolated or combined lesions of the anterior cruciate ligament treated by means of primary suture without reinforcement were followed-up 4-5 years postoperatively. In 75% of the patients, follow-up examination revealed clinical instability of the anterior cruciate ligament but only 25% of these had noteworthy subjective complaints (Lysholm knee score less than 83) and no significant difference was observed between the median knee scores for the group of patients with unstable knees and those with stable knees. On the other hand, however, a significant decrease in the level of activity (Tegner activity scale) was observed in patients with unstable knee joints as compared with patients with stable knees. These patients compensated for the defective stability by reducing the level of activity. Primary suture without plastic reinforcement cannot be recommended as the method of treatment of acute lesions of the anterior cruciate ligament because it does not provide long-term stability in the majority of patients.

Adolescent↗
PubMed1989

Arthroscopy in diagnosis and treatment of hip disorders.

Fourteen hip arthroscopies between January 1985 and May 1988 were reviewed. Included were ten women and four men with an age ranging from 12 to 76 years. Indications were avascular necrosis; loose bodies; osteoarthrosis, arthritis, or pain; and snapping hip. The diagnosis was verified in five cases, including arthroscopic removal of a loose body in one and resection of a plica bridging the space between the femoral head and acetabular roof in two patients. The diagnosis was rejected in three cases. In five cases, no pathologic changes were found. One arthroscopy was inconclusive because of a narrow field of vision in a dysplastic hip. No serious complications occurred. Hip arthroscopy is useful in diagnostics and surgical treatment of selected hip disorders. The rehabilitation time is short. Hip arthroscopy is, however, a technically demanding procedure.

Adolescent↗
PubMed1987

Treatment of clavicular fractures. Figure-of-eight bandage versus a simple sling.

Seventy-nine out-patients with midclavicular fractures were included in a prospective, randomized trial comparing treatment with a figure-of-eight bandage and a simple sling. Sixty-one patients completed the study and were reevaluated clinically and radiographically after 3 months. We found that treatment with a simple sling caused less discomfort and perhaps fewer complications than with the figure-of-eight bandage. The functional and cosmetic results of the two methods of treatment were identical and alignment of the healed fractures was unchanged from the initial displacement.

Adolescent↗
PubMed1987

Arthroscopic determination of patellofemoral malalignment.

Patellofemoral alignment was determinant by arthroscopy according to the degree of knee flexion at which the lateral facet, the patellar ridge, and the medial facet of the patella gained contact with the femur. The intraarticular pressure was 75 mm Hg. In 17 patients with a normal patellofemoral joint, the lateral facet aligned at a mean knee flexion of 20 degrees, the patellar ridge at 35 degrees, and the medial facet at 50 degrees. Twelve patients with patellar subluxation showed no difference in the alignment of the lateral facet, but differed significantly with regard to alignment of both the ridge and the medial facet with contact at a mean flexion of 55 degrees and 85 degrees, respectively. The median measurements in 20 patients with idiopathic anterior knee pain did not deviate significantly from the normal material. However, the dispersion was increased significantly, with eight patients having increased measurements consistent with malalignment and three having decreased measurements below the lower limit of normal alignment. Patients with idiopathic anterior knee pain apparently can be reclassified according to the arthroscopically determined alignment, which may prove important in the treatment of these patients.

Adolescent↗
PubMed1986

Arthroscopy in acute knee injuries.

The diagnostic value of arthroscopy was evaluated in 148 patients with acute hemarthrosis and/or instability of the knee. The treatment planned after clinical examination was compared with the treatment given after arthroscopy. Seventy-nine per cent of the patients had ligamentous injuries; 59 per cent of tears were combined with other injuries, and 71 per cent were complete ruptures. Stability testing under anesthesia was most inaccurate for the anterior cruciate ligament, with 13 per cent false positive and 30 per cent false negative results. The planned treatment was altered as a consequence of arthroscopy in 31 per cent of cases. Without arthroscopy, the preoperative diagnoses would have been seriously wrong in 15 per cent of the patients. Twenty per cent of total anterior cruciate ligament ruptures would have been overlooked.

Adolescent↗
PubMed1985

Glued periosteal grafts in the knee.

Periosteal grafting was performed in 4 patients with osteochondritis dissecans of the medial femoral condyle and 1 patient with osteonecrosis of the lateral femoral condyle following prednisone therapy. The lesions were drilled out deep into the cancellous bone. The periosteal graft was taken from the medial facet of the tibia and fixed to the excavated bony defect by the tissue glue Fibrinkleber Human Immuno (Tisseel). The patients were followed clinically, by arthroscopic examination and by radiography at 3, 6, and 12 months. After 1 year the borderline between the new and surrounding cartilage was hardly visible.

Adolescent↗
PubMed1984

The accuracy of clinical examination of injury of the knee joint.

This study is an analysis of the clinical examination of 118 consecutive patients with severe, acute injury of the knee joint, that is, with intra-articular effusion or with clinical suspicion of ligamentous instability. Both the clinical examination and the examination under anaesthesia for ligamentous instability involve a large number of falsely positive and falsely negative diagnoses. The greatest uncertainty is attached to the examination of the anterior cruciate ligament and menisci. The diagnostic specificity and the diagnostic sensitivity of the clinical examination of the anterior cruciate ligament are 0.75 and 0.62 respectively. The corresponding values for examinations under anaesthesia are 0.86 and 0.76 respectively. Two-thirds of the patients without intra-articular effusion, whose clinical examination gives rise to suspicion of ligamentous instability, however, have subclinical intra-articular haemorrhage and have as many cruciate and combined lesions as the whole series, viz. respectively 63 and 47 per cent. On the basis of this we conclude that arthroscopy should be carried out in all patients with a traumatic haemarthrosis or indication of ligamentous instability.

Adolescent↗
PubMed1982

A review of the morphology of Perthes' disease.

There are differences of opinion about the pathogenesis of Perthes' disease. All are agreed that it is due to ischaemia, but the cause of this and the size and number of infarctions are in dispute. Through the generosity of the contributors six whole femoral heads and core biopsies of five other cases have been studied radiographically and histologically. The findings ranged from an ischaemic arrest of ossification in the capital articular cartilage without infarction to multiple complete infarctions of the epiphysial bone. The ensuing reparative process contributes to the pathology, which is of a range to warrant grading or grouping.

Cartilage, Articular↗
PubMed1982

Dislocated femoral neck fractures. A follow-up study of 98 cases treated by multiple AO (ASIF) cancellous bone screws.

A series of 98 dislocated femoral neck fractures were treated by closed reduction and osteosynthesis with multiple AO (ASIF) cancellous bone screws. The patients were followed up for 2 years (or until death). The degree of dislocation did not have a statistically significant influence on the failure rate, which was, however, significantly correlated with poor reduction. Thirty-nine percent of the fractures were complicated by non-union or late segmental collapse. Forty-three of the patients participated in the 2 year follow-up examination. Of these patients, 38 had achieved excellent or good hip function. It was concluded that the reduction was the most important single factor in treatment of these factors.

Adult↗
PubMed1981

A new thermoplastic casting material. A comparison between plaster of Paris and Hexelite.

Plaster of Paris and Hexelite, a new thermoplastic bandage, were compared in the treatment of 183 patients with malleolar fractures, Colles' fractures or distortions of the finger joints. There were no statistically significant differences between the two types of bandages taking into account the strength of the bandage, the amount of skin damage and the patient's opinion of the bandage. Hexelite is seven times more expensive than plaster of Paris, and, in addition, is more difficult to handle. Hence its use has been discontinued.

Adult↗