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C Delaunay

Publications and source records attributed to C Delaunay.

35 records · Page 2Linked to original sources
PubMed1994

[Acetabular screw rings and surface effects: apropos of a continuous series of 115 primary implantations of Karl Zweymüller's acetabular screw rings after a follow-up of an average of 5.8 years]].

INTRODUCTION: The authors review and analyze a series of patients treated by total hip arthroplasty with a Karl Zweymüller threaded cup. METHODS: In a group of 115 consecutive primary total hip arthroplasties with the Karl Zweymüller cementless prosthesis, 100 acetabular screw rings have been retrospectively studied with a 5.8 years average follow-up (range: 40 to 96 months). RESULTS: The clinical results were graded excellent and good in 97 per cent, fair in one and poor in two (2 per cent). Only one single threaded component failed. Radiologically, the majority of bone to implant gaps appeared filled. Four screw rings were not initially stable. One of them was due to a technical error and was revised ten days post surgery. Two migrated three degrees within the two first years but remained stable since with a good clinical result. The fourth never stabilized and represents the single failure of this series. At last follow-up, 99 per cent of components were stable and 96 per cent of bone-implant interfaces showed no radiolucent line. At the 7-8 years interval, the survivorship with radiographic stability cumulative rates were of 98.21 +/- 5.61 per cent (standard deviation) for the current series and of 99.18 +/- 3.18 per cent for the 300 primary arthroplasties having been performed with the Zweymüller screw ring since 1986. DISCUSSION: Once bone integration apparently occurred, the authors have never observed any secondary migration indicating failure of the bone anchorage phenomenon. These mid-term results are a) significantly better than those of all first generation screw rings with no micro-porous surfaces; b) better than those of the PCA acetabular cup, c) slightly better than those of the Charnley cemented sockets for which loosening rates increase with time; and d) with equivalent follow-up, similar to those of the Harris-Galante cup. In the authors opinion, the main reason leading to failure and abandoning of the first generation smooth screw rings is not the screw-in concept of their primary fixation but the lack of any surface micro-porosity providing no support for osteointegration. CONCLUSION: Due to its biomecanical characteristics, excellent primary stability, thinness of its pure titanium micropitted surface and low module of elasticity, the Zweymüller screw ring achieves a quite successful compromise between the different conditions necessary not only to obtain but above all to maintain osteointegration at least at mid term.

Adult↗
PubMed1993

[A rare inferior dislocation of the distal radio-ulnar joint caused by spontaneous post-fracture epiphysiodesis of the radius].

The authors report a case of radial deviated hand following fracture of the distal forearm bones in a seven year old child who was not followed-up after minimal initial treatment. They discuss the mechanism of this deformity due to growth disturbances affecting the extremities of the two bones of the forearm, especially the distal radius which stopped growing at the time of the accident, resulting in relative-shortening of the radius of 25 mm in relation to the ulna and 90 mm in relation to the healthy side. The injured ulna consequently slowed its rate of growth without stopping altogether. Treatment was not designed to restore normal length of the forearm, but to satisfy the patient's desire to straighten the hand without interfering with function. The Kapandji-Sauvé technique allowed correction of this deviation while maintaining stability of the wrist and restored a normal range of hand movement. Apart from global shortening of the forearm, this technique can be considered to have given the patient a normal hand.

Arthrodesis↗
PubMed1991

The prevalence of diabetes mellitus in the adult population of Guadeloupe as estimated by history or fasting hyperglycemia.

A study was conducted between January 1984 and March 1985 to determine the prevalence of diabetes in the adult population of Guadeloupe (18 years of age and over). A two-step sampling frame, using a sampling fraction of 0.46%, where the primary units were composed of districts and where sub-units were households, was used. The household refusal rate was 22%. Subjects were classified as 'diabetic' when they were either already known or when their fasting plasma glucose was above 8.0 mmol/l. The total age and sex standardized prevalence of diabetes among the adult population of Guadeloupe can be estimated at 6.6%. The high prevalence rate appears to be related to obesity (strongly in women), a genetic susceptibility (22.5% of age standardized prevalence among subjects of Asian Indian origin for both sexes), and, possibly, in men of African origin only, to a maternal history of diabetes.

Adult↗
PubMed1991

The frequency of alcoholisation among young people injured in accidents in France.

In a nation-wide epidemiological survey carried out in France in 1982-1983, blood alcohol concentration was systematically measured in 1423 young casualties (aged 15-24 years) on their arrival in the emergency room. Traffic accidents accounted for almost half of the admissions, and they were the most severe, with over 10% requiring hospitalisation with vital risk. A quarter of the admissions was female; on average, their blood alcohol concentration was low and not statistically related to age. Conversely, among young male casualties, 1 out of 5 had a blood alcohol concentration of at least 0.50 g/l (11 mmol/l) and 1 out of 15 was classified as a chronic heavy drinker. It is of note that alcohol was implicated in 43% of the car/truck accidents of the young men and that blood alcohol concentration as well as the proportion of chronic drinkers were strongly related to age. Alcohol consumption may begin as early as 15 years; in the young men 15-24 years, only 7% were chronic drinkers whereas in men over 24, 37% were chronic drinkers. On this basis, it is appropriate to focus education about alcohol consumption on adolescents, particularly men.

Accidents↗
PubMed1987

Hemiresurfacing for femoral head osteonecrosis.

A modified THARIES femoral resurfacing component was used as a hemiarthroplasty in 11 young adult patients (12 hips) with osteonecrosis. The mean follow-up period was 39 months (range, 24-62 months). In all of the hips, the necrosis had advanced to the stage of subchondral femoral head fracture and segmental depression, but there was a relatively normal acetabulum. Ten hips have maintained satisfactory improvement of UCLA pain, walking, and function hip scores. One hip was revised to an uncemented total replacement, and one has some residual pain. No case failed because of component loosening. The modified femoral THARIES component was used as a preferable alternative to unipolar or bipolar hemiarthroplasty, and the results appear to be comparable in this difficult group of patients. Hemiresurfacing was conceived not as a definitive procedure but rather as a time-buying measure to improve symptoms and function and to allow the performance of a technically uncompromised total hip arthroplasty at a future date.

Acetabulum↗
PubMed1986

[Nontraumatic aseptic osteonecrosis of the femoral head. Etiopathogenic, developmental and therapeutic considerations: review of the literature].

Aseptic non-traumatic necrosis of the femoral head occurs in patients with very unusual general state of health. Despite the fact that the metabolic abnormalities are better known today, many problems with regard to prognosis and treatment remain. According to the author's experience and, review of the literature, the authors consider that the production of tissue repair with hypervascularity is an aggravating factor. Disturbance of lipoproteins plays a major aetiological role. Decompressive forage should be reserved for the early stages. Secondary degenerative arthritis is almost constant after conservative surgery in cases that have been assessed. The authors obtained good results after Luck's adjusted cups and they consider that this is a reliable procedure. They have observed a high level of septic complications after total prosthesis. It is thought that this is related to the general condition of the patient.

Arthroplasty↗
PubMed1986

[Pubic osteoarthropathy caused by symphyseal instability or chronic painful symphysiolysis: treatment by symphysiodesis. Apropos of a case and review of the literature].

The authors describe a case of pubic pain in a 42 year old woman engaged in leisure sporting activity. She had had, 17 years earlier, a difficult delivery. Standard X-Ray showed narrowing of the symphysis pubis. Radiographs when bearing weight on one leg showed instability of the symphysis pubis. Conservative treatment was unsuccessful and grafting and plating was performed. The result was most satisfactory. A review of the literature shows ten similar cases. The obstetrical consequences are discussed.

Adult↗
PubMedDate not supplied

[Lichenoid cutaneous reaction to imatinib].

INTRODUCTION: Imatinib (Glivec) is a new therapeutic molecule used for the treatment of chronic myeloid leukemia. Cutaneous side effects with this treatment are common but lichenoid drug eruption is exceptional. We report the first case with profuse cutaneous lichen. CASE REPORT: A 52 year-old woman presented with a 5-year history of chronic myeloid leukemia. The different chemotherapies had failed (persisting polyadenopathies and splenomegalia). She was treated with imatinib (400 mg/day). Two months after the beginning of this treatment a disseminated cutaneous eruption appeared on the trunk, legs, arms and face without mucosal involvement and composed of dark purple, prurigenous, papules suggestive of lichen planus. The cutaneous biopsy confirmed the diagnosis of lichen planus. Suspension of the drug led to the complete regression of the eruption, without any other local treatment, within 2 months. Reintroduction of the drug led to the recurrence of the lesions. DISCUSSION: Cutaneous reactions to imatinib are common and occur in 11 to 67 p. 100 of patients depending on the series. More severe cutaneous reactions have been described: exfoliating dermatites, generalized pustulosis, epidermal necrolysis. The aspect of profuse lichenoid eruption of the skin and the correlation with cutaneous lesions clinically and histologically evocative of lichen planus has not been described other than an isolated buccal involvement in a 72 year-old woman. In our patient, study of the imputability criteria is in favor of imatinib's responsibility.

Antineoplastic Agents↗
PubMedDate not supplied

[Six to ten year results of use of the alloclassic hip prosthesis--a multicentre survival analysis].

AIM: This prospective study describes This retrospective multicenter study was undertaken to calculate mid- and long-term survival rates of the cementless Zweymüller/Alloclassic total hip prosthesis. MATERIAL AND METHODS: The rectangular titanium stem and threaded cup have been in use since 1986. The ball head is made of alumina ceramic, the inlay of UHMW polyethylene. Five hospitals in Austria, France and Germany cooperated in the follow-up of 848 patients operated between October 1986 and September 1990 (mean age 62.2 years, 62% women, 38% men, mean patient weight 73.8 kg, body mass index 26.8). 468 patients were followed clinically, 320 patients interviewed on the phone, 29 sent a letter. No information was available concerning the remaining 31 patients. Probabilities of implant survival were estimated with the Kaplan-Meier method. RESULTS: 98 patients (11.5%) had died at a median follow-up time of 81.1 months. The probability of survival at 81.1 months was 98.6% looking at stem and cup. There was no significant association of survival of the prosthesis and patient weight, gender or body mass index. CONCLUSION: Our results are in accordance with previously published data of smaller series using the Zweymüller/Alloclassic( total hip. The survival rate of this cementless rectangular titanium prosthesis for the reported follow-up time compares favorably with contemporary cemented hip prostheses.

Adult↗