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Biomedical subjects

P Lascombes

Publications and source records attributed to P Lascombes.

At least 73 records · Page 4Linked to original sources

[Cubital dimelia. Apropos of a case with review of the literature].

Cubital or ulnar dimelia is a very rare congenital abnormality involving almost perfect duplication of the ulnar with absence of the radius, thumb and polydactyly. An eleven week old child was seen in the Department of Pediatric Surgery for a malformation of the left upper limb including deformity of the forearm with almost doubling of the hand and seven fingers. Radiological investigation revealed duplication of the ulna as well as of the metacarpals and fingers with absence of the radius and thumb. This type of abnormality remains controversial but clinical and radiological examination led to the conclusion of primary ulnar dimelia. We report a new case of this very rare congenital abnormality which was not accompanied by any other malformation.

Hand Deformities, Congenital↗

[Unusual forms of upper femur epiphysiolysis].

Among 56 slipped capital femoral epiphysis (SCFE) treated over 12 years, the authors report 10 particular cases: 3 hypopituitarisms, 1 adrenal hyperplasia, 1 case after radiotherapy, 2 osteochondrodysplasia, 2 cases with major defect of the posterior wall of femoral neck and 1 coxa valga slip. Literature is analysed with special reference to etiological forms representing a predisposition to slippage. Awareness of these conditions under which SCFE can occur is an important factor. Surgical stabilization is classical, but two points are discussed: stabilization may need to be augmented by autologous bone grafting or to be fixed with pins leading to normal growth without dysplasia of the hip.

Adolescent↗

[Comparative study of the Armstrong and Harrington technics in the treatment of idiopathic scolioses].

Between 1982 and 1985, idiopathic scoliosis was treated by instrumentation using Armstrong's technique, segmental spinal instrumentation (Luque's method) being reserved for neuromuscular scoliosis. Of the 29 patients treated by the technique 22 have been followed up for more than 18 months. Results were compared with those in a similar group of 30 patients operated upon using Harrington's original procedure between 1977 and 1982. This retrospective study complements that of Michel et al., and provided the following results: Although the instrumental correction gain was comparable in the two groups after 2 years, the angular loss was less marked by 3.4 degrees in the Armstrong when compared with the Harrington group. In addition, this mounting offers stability of lumbar contra-curvatures of which there is a lack of deterioration. Horizontalization of the lower load-bearing vertebra was better in the Armstrong group and allowed the choice of a load-bearing vertebra above that of the Harrington's group in two-thirds of cases. The changes in vertebral rotation and gibbosity are supplementary advantages of Armstrong's technique. Postoperative contention is still necessary, whatever technique is used, but the use of a second branch placed in distraction in the convexity is recommended, to improve quality of surgical treatment of idiopathic scoliosis.

Adolescent↗

Elastic stable intramedullary pinning of long bone shaft fractures in children.

Stable intramedullary pinning is an excellent method for treating shaft fractures in children when there is an indication for operative management. It is a new biomechanical concept which aims at developing the bridging external callus. This closed pinning uses flexible rods which are introduced into a metaphysial area. Technique, results and indications are described particularly in regard to shaft fractures of the femur and the forearm. This closed surgical procedure can always be performed; complication rates are slight (no sepsis, no delayed union). Early mobilisation is possible, and use of a cast is unnecessary.

Bony Callus↗

[Lengthening osteotomy of the femoral neck with transposition of the greater trochanter in acquired coxa vara].

The main problem in acquired coxa vara is related to shortening of the femoral neck and upward displacement of the greater trochanter. Using the Wagner technique, the authors have performed an intertrochanteric osteotomy in five adolescents with transfer of the greater trochanter to lengthen the femoral neck. The technique is described. The early results are encouraging.

Adolescent↗

[Osteoarthritis in infants. Follow-up and treatment].

For 25 years, 102 hematogenous septic arthritis have been observed in 82 newborns and infants. The hip joint was the most commun site of involvement (63 cases), than the knee (23 cases), the shoulder (7 cases), the elbow (5 cases), the ankle (3 cases) and one wrist. 14 times, two or more joints were involved. When the diagnosis was made early, an aspiration of pus and an irrigation of the joint was done. But in severe and delayed arthritis, an arthrotomy was preferred. In all cases, joints were immobilized in a post-operative cast or with a traction management, and parenteral antibiotics were prescribed. 52 sequellae were noted, two third of these were seen in second hand. Sequellae are detailed joint by joint, and the authors describe different stages from minor dysplasia and abnormal growth of the epiphysis to severe destruction of the bones and persistent dislocation. Treatment of sequellae is proposed: 1. The hip joint. Dysplasia and deformities of the head and/or the neck were corrected with femoral osteotomy. In 2 cases, a pelvic innominate osteotomy was performed. Progressive coxa vara with short neck and greater trochanteric overgrowth were treated with femoral neck lengthening (personal technic). Dislocations needed open reduction of the hip and extensive excision of the acetabular fibro-fatty tissue. In a few cases, a Colonna's procedure was made. In total destructions of the upper femoral extremity, the treatment consisted in trochanteroplasty. In partial epiphysiodesis of a femoral condyle, disepiphysiodesis was obtained with resection of the physeal bone bridge (2 cases) or with free free physeal transplantation with microvascular anastomosis (2 cases).(ABSTRACT TRUNCATED AT 250 WORDS)

Arthritis, Infectious↗

[Congenital anterior dislocation of the hip].

An apparently congenital antero-superior hip dislocation is identified during surgery. With reference to this case, three possible clinical courses for congenital hip dislocations are outlined: As a rule full recovery is most frequent. However, a posterior dislocation which is persistent tends to become postero-superior upon weight-bearing. Anterior dislocations as well as antero-superior subluxation appear to be rather common. Both pathology and the CAT scan attest to this fact. Extension, which is a true dislocating position for a retracted hip in adduction anc rotated externally, is probably responsible for such an evolution. Anterior dislocation and especially antero-superior subluxation are frequent findings which can be explained anatomically. The eventual complications of the antero-superior wall of the acetabulum resulting from these, will be the objective of most of the usual treatments for residual hip dysplasia.

Female↗

[Legg-Perthes-Calvé disease. Plea for an original ambulatory orthosis].

Legg-Perthes-Calvé disease is a local disease which should be treated by non-iatrogenic means. The authors have designed a new ambulatory orthosis allowing containment in abduction, flexion and medial rotation, with relief of weight-bearing on the femoral head. It was tested in thirty six hips. In only eight of them a surgical procedure had to be performed during the evolution of the disease (femoral or pelvic osteotomy) because of secondary exenteration of the hip.

Child↗

[Prognosis of fractures of the femur neck in children].

Fractures of the hip in children have always had a reserved prognostic resulting from their numerous complications. A retrospective study of hip fractures treated at Sainte-Justine Hospital Montreal, has permitted a better understanding of these fractures in regard with appropriate therapeutic measures. 28 fractures of the femoral neck were retained for this study. Fractures were classified along the Delbet classification, treatment was generally surgical in displaced fractures, and results were based on the Ratliff evaluation. Of the 3 traumatic epiphyseal injuries, 2 showed slight displacement in young children and the result is good, while the third case showed avascular necrosis. Only 53% of the 17 transcervical fractures have a good result. Of the 13 displaced fractures, 6 showed signs of avascular necrosis. In these cases, the prognosis is unpredictable and unrelated with the age of the patients. 7 of the 8 basicervical fractures have a good result (88%). A better comprehension of these fractures and of the vascularisation gives better knowledge of the significant difference of prognosis in type II and type III fractures.

Adolescent↗

Systemization of the vascularization of the ulnar nerve in its upper arm.

Vascularized free nerve grafts make possible the repair of extensive defects of large nerve trunks. Since the original observations of Taylor and Ham in 1976 many cases have been published. The ulnar nerve in the upper arm in most cases has a simple arteriovenous pedicle the anatomy of which has been precisely defined by cadaver dissections and intravascular injections. The arterial supply, 47 times out of 50, is the proximal ulnar collateral and 2 times the distal collateral ulnar artery. It takes its origin from the medial side of the brachial artery in the upper or middle third of the arm. Its external diameter is on the average 1.8 mm at its origin. The accompanying vein enters a brachial vein 2 to 3 cm below the origin of the artery. The removal of the graft is done through a straight incision on the inner aspect of the arm. The brachial artery is dissected from above downward and its medial branches noted. The nerve and its arteriovenous pedicle are separated in a block along with adjacent cellular tissue by dissection from below upwards. The average length of the pedicle thus produced is 13 cm, but a much longer section of the nerve can certainly be taken. A case report illustrates the procedure.

Adult↗

[Vascularization of the ulnar nerve of the arm].

A review of 53 dissections associated with injections and radiographs was performed (by the authors) to specify the arteriovenous vascularization of the ulnar nerve of the arm. An arteriovenous pedicle is constantly to be found. The artery "collateralis ulnaris superior" arises from the inferior border of the "pectoralis major" at an average distance of 6,7 cm. The arterial depending vein most often directly rejoins the "vena brachialis" lower than "vena basilica" does, but usually more distally than the arterial emergence level. Thus constituted, the pedicle can be anastomosed, measuring generally more than 1 mm in diameter. The arterial distribution originates from an arcade parallel to the nerve from which arise some extremely fine ladderlike vessels. Finally, this pedicle vascularizes the whole brachial part of the nerve (roughly 23,6 cm).

Arm↗

Treatment of congenital pseudarthrosis of the tibia by the Ilizarov method.

Three cases of congenital pseudarthrosis were treated by the Ilizarov method. Consolidation was obtained by 3.5 months in three patients who had undergone several previous surgical procedures. Although the length of follow-up was short (maximum 3.5 years), consolidation occurred more quickly than by traditional methods. This technique also permitted both simultaneous correction of axial malalignment and leg lengthening. We think that this method has a place as a salvage procedure except where the distal fragment is very thin or dystrophic.

Bone Lengthening↗

Reduction and fixation of displaced radial neck fractures by closed intramedullary pinning.

Radial neck fractures in children are serious injuries with frequent sequelae when the tilt exceeds 60 degrees. Conservative treatment is often inadequate in such cases and open reduction may produce iatrogenic complications. We report our experience with an original technique. An intramedullary wire introduced from below and projected upward allows reduction of the displacement and maintenance of the correction without infringing the joint. The operative technique is described. This method was used in 31 fractures with between 30 degrees and 80 degrees of tilt and in 16 fractures with > 80 degrees of tilt. Excellent and good functional results were obtained in 30 cases in the first group and in 11 cases in the second group.

Adolescent↗