Search PubMed⌕ Search

Biomedical subjects

Y Allieu

Publications and source records attributed to Y Allieu.

At least 109 records · Page 6Linked to original sources
PubMed1984

[Radioulnocarpal and mediocarpal articulations. Anatomic organization and biomechanical bases].

Based on their personal work and a general review of the literature, the authors have studied the anatomy and the physiology of the carpal bones and the radioulnocarpal joint. The wrist complex includes 33 ligaments which may be divided into three groups: intra-articular, intracapsular and extracapsular. The biomechanic behavior of each carpal bone, joint and ligamentous structure was considered.

Biomechanical Phenomena↗
PubMed1984

[Carpal instability--ligamentous instabilities and intracarpal malalignments--explication of the concept of carpal instability].

Normally, intracarpal stability is due to the carpal ligaments as well as to the "spatial coherence" of the carpal bones. "Destabilization" may be due to ligamentous attenuation when sprains and dislocations occur. This will lead to "dynamic instability" in extreme movements of the wrist or to malalignments in the case of long-standing dislocations. The scapholunar, triquetral or midcarpal ligamentous structures may be involved. The loss of spatial coherence by modifications in the form or in the volume of the carpal bones may lead to "compensatory carpal re- or malalignments".

Humans↗
PubMed1984

[Compensatory carpal malalignments].

This new nosological chapter deals with carpal malalignments due to osseous disorders which are secondary to alterations of the spatial coherence of the carpus with respect to variations in the form or in the volume of the carpal complex. The authors have included as well, the compensatory realignments which are secondary to modifications of the radial buttress. The malalignments secondary to disorders of the lunate (excision of the lunate, Kienböck's disease, lunar implants), scaphoid (excision of the scaphoid, nonunion, implants) as well as those due to proximally located malunions of the lower extremity of the radius, are studied. The therapeutic rationale which may be concluded from this study is exposed.

Bone Transplantation↗
PubMed1984

[Carpal instability. General therapeutic principles].

Ligamentous injuries must be looked for and repaired on an emergency basis. Correct alignment may be achieved by pinning through a posterior approach. Secondary repair is hazardous. When dealing with compensatory carpal malalignments, intracarpal surgery should strive not only to correct the one bone involved but the entire carpal complex and, in particular, to correct the horizontally tilted scaphoid which may otherwise lead to arthrosis.

Carpal Bones↗
PubMed1984

Swanson trapezial implant in the treatment of peritrapezial arthrosis. A study of eighty cases.

Eighty cases of peritrapezial arthritis of the thumb treated by Swanson's trapezial implant have been reviewed by the authors. They advocate a slightly modified technique and emphasize the importance of "varisation" of the implant and of correct resection of the greater multangular bone. Follow-up was at least one year in all cases, maximum 10 years, the mean being 3 1/2 years. Results were judged as very good in 75% of the cases, fair in 20% and poor in 5%. This study emphasized the cases of failure by implant instability and its causes. In 8 cases, abnormal wear of the implant or of the scaphoid bone raises the question of long-term tolerance of silicone implants.

Arthritis↗
PubMed1984

The surgical treatment of the rheumatoid wrist. Current perspectives.

The authors stress the prevalence and severity of wrist involvement in rheumatoid disease. Improved knowledge of aetiopathogenesis and deformities had led to identification of the importance of the distal consequences on the digital joints of decentralization of the wrist. Synovectomy retains an important place at the onset of the disease. This may be completed by stabilization procedures (tendon transfer and partial arthrodesis). At the advanced stage of the disease, arthroplasty is currently overtaking arthrodesis. Interposition arthroplasty, with its rare indications, is now well developed. Although the solution of the future, arthroplasties lack sufficient follow up in terms of their results. The Swanson implant offers limited mobility but ensures freedom from pain and a good wrist axis. The ideal treatment of the rheumatoid wrist is oriented towards early conservative surgery and later, at an advanced stage, towards arthroplasty, the ideal technique of which remains to be discovered.

Arthritis, Rheumatoid↗
PubMed1983

Rupture of the flexor tendons of the little finger in fractures of the hook of the hamate bone. Report of two cases.

Two cases of rupture of the flexor tendons of the little finger associated with a fracture of the hook of the hamate bone are presented. The preoperative diagnosis had not been made. Excision of the fractured hook and repair of the tendons by a short graft from the palmaris longus in one case and by the transfer of the superficial flexor of the ring finger in the other case gave a good final result. The authors remark on the rarity of reports of this fracture in the literature, the frequent occurrence of nonunion and the two complications which are exceptional; rupture of the flexor tendons and compression of the deep branch of the ulnar nerve. The fracture is mainly encountered in sports that require the grasping of a handle (tennis, golf, hockey, squash). The diagnosis is often missed at the onset because of not using the correct X-ray positioning: special incidence for the carpal tunnel view and a 3/4 view with the wrist in 45 degrees of supination and forced radial deviation.

Adult↗
PubMed1983

Simple arthrolysis for flexor rigidity of the proximal interphalangeal joint.

The authors report 19 cases of simple arthrolysis of the proximal interphalangeal joint for flexion rigidity. Their cases were limited to isolated lesions of the joint without any flexor or extensor tendon involvement. The technique is described, and the importance of postoperative physical therapy is stressed. The results in these cases, in contrast with those in complicated cases of rigidity, are very satisfactory. The etiology is primarily sprains and dislocations of the proximal interphalangeal articulation, immobilized for too long a time in flexion (in the so-called "functional position").

Combined Modality Therapy↗
PubMed1983

Two-step reconstruction of the flexor tendons (Hunter's technique) in the treatment of fingers "en crochet".

The authors used Hunter's technique to treat 16 cases of fixed-flexion deformity of the finger (with irreducible flexion of the joint greater then 70 degrees), secondary to lesions of the flexor tendons. The flexion deformity was corrected in 11 of the 16 cases, and active movement greater than 70 degrees was obtained in only 7 cases. Technical difficulties (particularly cutaneous problems), frequent complications, prolonged reeducation are the reasons that the indications for its use are exceptional, and why there is need for excellent cooperation by the patient.

Amputation, Surgical↗
PubMed1983

[Peri-trapezial arthrotic lesions].

The usual concept of arthrosis of the base of the thumb as a carpometacarpal arthrosis has been replaced by the concept of its being a pantrapezial arthrosis involving all of the peritrapezial joint spaces. In the pathogenesis of pantrapezial arthrosis, the static role of the shaft of the thumb, and the strains from pinching movements between the thumb and fingers are of predominant importance. The lack of satisfactory radiographic technique up to now has made the evaluation of this joint difficult, but the possibility of trapezometacarpal dysplasias favoring arthrosis should be considered. The treatment of an arthrosis of the basal joint of the thumb is surgical when medical treatment has not been successful. The various techniques, which currently are numerous, are given in detail. Carpo-metacarpal arthrodesis has still some precise indications. Arthroplasties have superseded the usual trapezectomy which, nevertheless, seemed to give satisfactory results. The various techniques of arthroplasty and their respective indications according to individual patients, and the anatomic type of the arthrosis of the base of the thumb are discussed.

Arthrodesis↗
PubMed1983

[Biological behavior of a vascularized cortical bone graft. Experimental study of the rabbit fibula].

The study of the biological course of a vascularized osseous graft was performed on 64 fibulae in rabbits. Using radiography, standard histology, tetracyclines markage and study of 47-calcium incorporation as means of control. The time-limits of control are fixed at the 5th, 10th, 15th and 21st day and at the 1st, 2nd, 3rd and 5th month. The results show that if they are vascularized or not, the osseous grafts are not subjected to the rule: everything or nothing: "everything is not living in a vascularized osseous graft and everything is not dying in a conventional osseous graft". As for the good quality of the recipient bed, there is no significant difference between the healing time of those two types of grafts.

Animals↗
PubMed1983

[Carpal tunnel syndrome in chronic hemodialysis patients. An etiopathogenetic approach. Apropos of 31 surgically-treated cases].

Thirty-one carpal tunnel syndromes were seen in 20 patients treated by haemodialysis for renal failure. At the time of operation, the duration of the haemodialysis was an average of 9 years. On 24 occasions, the syndrome existed in the limb of the arterio venous fistula but on 7 occasions it only appeared in the opposite limb. The syndrome is characterised by the development of, or the worsening of paraesthesiae during haemodialysis sessions. The degree and duration of the numbness in the fingers in the morning was particularly striking. At surgery, the nerve was always obviously narrowed. It was noted in 21 cases that there were greyish granulation in the synovium and sometimes intra tendinous nodules. All the operated cases improved. The pathogenesis is discussed in relation to amyloid deposits. The haemodynamic role of the fistula seems to be to make the development of the lesion more likely. Microscopic examination and biochemical studies give rise to the conclusion that this is an AL type of amyloidosis.

Adult↗