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Biomedical subjects

R Beluzzi

Publications and source records attributed to R Beluzzi.

8 recordsLinked to original sources
PubMed1999

Lumbar pain and fin swimming.

BACKGROUND: It was hypothesised that fin swimming have unique physiopathologic features in particular concerning low back involvement. METHODS: Retrospective study. SETTING: elite competitive fin swimmers. PARTICIPANTS: 17 males and 14 females aged from 16 to 23 years. INTERVENTION: piroxicam, sport interruption for a week, proper warming-up and wearing suggestions during out-of-water exercises in the symptomatic group. Absence of intervention in the asymptomatic one. MEASURES: anthropometric measures (weight, height, legs length discrepancy), isokinetic measures (trunk flexor/extensor ratio) and conventional radiological investigation were taken for all subjects. RESULTS: Low back pain was present in 14 subjects during off season but only 7 referred discomfort in competitive season. 78.5% of symptomatic subjects showed radiological abnormalities while imaging changes were present in 52.9% of the asymptomatic group. Flexor/extensor ratio isokinetically evaluated was less than one in 6 athletes complaining back discomfort. Non steroid medication, physiotherapy, training and wearing cares was suggested. Authors report a pain free return to competition in 57% and a partial resolution in 28% of those symptomatic cases who were not used to training cares (in particular proper "out-of-water" warming up) and wearing precautions (complete wiping and suitable thermic clothing after swimming). CONCLUSIONS: In fin swimming low back pain can be related to the existence of environmental and intrinsic factors. In our series no significant difference in imaging changes was pointed out among asymptomatic or painful athletes. Therefore a cyclic load on the column, in absence of training precautions can make spine abnormalities (in particular schisis, facet derangement and pars lesion) symptomatic.

Adolescent↗
PubMedDate not supplied

The use of bioabsorbable polymers in reconstruction of the anterior cruciate ligament. A preliminary experiment conducted on bioabsorbable interference screws: bovine model vs. ovine model.

The use of interference screws in the reconstruction of the anterior cruciate ligament has increased over the years. Despite doubtless advantages there are some problems, too, some involving method of fixation, others the metallic nature of the screws. With the purpose of overcoming the latter, the authors evaluated the possibility of using interference screws made of bioabsorbable material. This preliminary study was conducted on two animal models (bovine and ovine); as a comparison parameter the torsional pair of screw insertion was used. A substantial similarity in the results thus obtained was observed that, together with the minor difficulties observed in the surgical field, contributes to the indication of the ovine model as preferential, based also on successive tests of functional validation conducted in vivo.

Absorbable Implants↗
PubMedDate not supplied

Fracture of the patella in children and adolescents.

Fractures of the patella in childhood and adolescence are a rare occurrence, and they are differentiated from those occurring the adult. Between 1975 and 1995, 76 cases of fracture of the patella in patients aged under 15 years were treated at our institute. A mean clinical-radiographic follow-up of 2 years was available for all of the patients; 18 patients were followed-up after a considerable amount of time (mean 18 years). After analyzing the specific features that distinguish there fractures when they affect a subject who is still growing, the authors report the results obtained and the short and long-term complications observed.

Adolescent↗
PubMedDate not supplied

Changes in growth of the ilium after sopraacetabular osteotomy. Long-term evaluation.

It is commonly known that in acetabuloplasty according to the Pemberton-Zanoli method the insertion of the graft produces an immediate increase in the height of the iliac wing which in successive months could become hypergrowth caused by the hyperactivity of the underlying Y cartilage. A total of 40 cases of insufficiency of the acetabular roof treated by this method were examined based on measurements on follow-up radiograms and an evaluation of the spino-malleolar distance until puberty. The clinical evaluation showed that in 82.5% of cases there is dysmetria that is less than or equal to 0.5 cm. An evaluation of radiograms at the end of growth of the ilium [correction of ileum] did not reveal significant variations between the hemipelvis submitted to surgery and the contralateral one either in cases treated by acetabuloplasty alone or in those in which intertrochanteric osteotomy was associated. Acetabuloplasty according to the Pemberton-Zanoli method is thus effective in the treatment of acetabular dysplasia at a young age, obtaining long-lasting effects and ones that do not cause dysmetria in the adult.

Acetabulum↗
PubMedDate not supplied

Out-patient arthroscopy.

The results and complications of knee arthroscopy performed using local (982) and truncular anesthesia (523) at the out-patient arthroscopy clinic of the Rizzoli Orthopaedic Institute between 1982 and 1994 were analyzed. Furthermore, the literature on technique and surgical indications for the use of out-patient arthroscopy with a 3 in 1 block was reviewed.

Ambulatory Surgical Procedures↗
PubMedDate not supplied

Chondromalacia of the patella. Natural progression.

A total of 42 cases of patellar pain in subjects aged an average of 17.2 years submitted to arthroscopy are analyzed. Femoropatellar balance, where indicated, led to resolution of disorders with full resumption of sports activity. In the remaining cases chondromalacia showed the features of an affection with a spontaneously favorable course, confirming the common orientation towards conservative treatment. Arthroscopy is effective for a correct classification of cartilaginous lesions, and it is a good instrument to use when attempting to achieve recovery of patellofemoral joint when disorders are caused by a lack of equilibrium.

Adolescent↗