bluuebunny/crossref_metadata_2025_split huggingface dataset:
LEONTIASIS OSSEA
Authors: Evans John 
Published: February 2018

1. One hundred and forty-nine cases of leontiasis ossea reported in the literature have been reviewed. 2. The clinical, radiographic and pathological features of the condition are discussed. 3. Four additional personal cases are reported in detail. 4. A new classification of leontiasis ossea is suggested, by which the condition is divided into true leontiasis and false (or symptomatic) leontiasis, True leontiasis is a clinical syndrome caused by two distinct types of disease, whose pathology, however, is related. False leontiasis gives a superficially similar picture but on detailed examination is found to be distinct; it may be caused by a variety of different conditions. 5. Classified in this way, ninety-seven of the total of 153 cases considered were classified as true leontiasis (forty-five Type 1 and fifty-two Type 2); forty were classified as false leontiasis; and sixteen did not fall into either category.
THE ROLE OF CAPSULAR CHANGES IN OSTEOARTHRITIS OF THE HIP JOINT
Authors: Lloyd-Roberts G. C. 
Published: February 2018

1. The synovial membrane and capsule in osteoarthritis of the hip have been studied in twenty-five cases. Dissections have been made on fresh cadavers to establish the normal structure and function of these tissues at different ages. 2. Fragments of bone and cartilage were found beneath the synovial surface in twenty-three cases of the twenty-five cases of osteoarthritis. 3. The source of these fragments is the degenerate articular surfaces. 4. The fibrosis of the synovial membrane and capsule follows the synovial hyperplasia which accompanies the phagocytosis of these fragments. 5. A similar histological picture has been produced by injecting fragmented cartilage into the knee joints of rabbits. The injected fragments are found beneath the surface, and synovial hyperplasia is followed by subsynovial fibrosis. 6. The greatest amount of this joint debris is found in the lowest part of the joint cavity. 7. The joint capsule is particularly sensitive to traction. 8. All parts of the capsule are tight in extension, which is the weight-bearing position. 9. Fibrotic shortening of the capsule in the lowest part of the joint cavity explains many of the symptoms and signs of the disease: pain is caused by an attempt to stretch the capsule; muscle spasm occurs in the muscles supplied by the sensory nerves of this part of the capsule; extension, medial rotation and abduction, which tighten this area, are lost first; progressive shortening causes deformity in the opposite direction, namely flexion, lateral rotation and adduction; the loss of extension causes a more rapid wearing of articular cartilage on weight bearing; subperiosteal new bone is formed on the under-surface of the neck of the femur. 10. The symptomatology is discussed.
THE CHEMOTHERAPY OF ORTHOPAEDIC TUBERCULOSIS
Authors: Stevenson F. Harwood 
Published: February 2018

Streptomycin and the newer antibiotics have already belied the pessimistic agnosticism of 1947. In certain instances, notably in disease of the knee and hip and in some cases with draining sinuses, it appears that they are sufficient to produce a quiescence which may be a cure. For the rest it remains to map out in detail what has in part been explored. In particular it is essential to confirm how far antibiotics enable surgeons to treat tuberculosis upon the basic principles applicable to other infections of bone without fear of secondary infection: where there is diseased bone, to remove it: where there is pus, to relieve the tension and evacuate it. The surgeon fears not so much the infection itself as the inability of the tuberculous soil ordinarily to deal with secondary infection. With the control of the diseased soil the risk should be no greater than that of any other surgery of bone. The early case and the advanced case; age and site of disease; these and other variables must subdivide basic method. What is the best application of the new "combined operation" to a child of three with thoracic Pott's disease and a globular abscess? What is the wisest plan for a man of forty with old disease in his lumbar vertebrae and discharging sinuses? We begin to see what we could do. At the present the question still remains: What should we do?
THE SURGICAL CORRECTION OF MANDIBULAR PROTRUSION AND RETRUSION
Authors: Henry T. Cradock 
Published: February 2018

1. The technique of correction of mandibular protrusion and retrusion by osteotomies through the rami of the mandible is described and illustrated. 2. The best age for the operation, and the factors that might favour or prevent relapse, are discussed. 3. Illustrative cases are described.
THE TRAUMATIC ANATOMY AND TREATMENT OF ACUTE ACROMIO-CLAVICULAR DISLOCATION
Authors: Horn J. S. 
Published: February 2018

1. The lesions chiefly responsible for persistent pain and weakness after acromio-clavicular dislocations are tears of the trapezius and deltoid muscles. 2. These tears cannot be adequately treated except by open operation. 3. There are often physical barriers making closed manipulative reduction impossible. 4. Open reduction and repair of torn ligaments and muscle is advocated for manual workers.
A RADICULAR SYNDROME FROM DEVELOPMENTAL NARROWING OF THE LUMBAR VERTEBRAL CANAL
Authors: Verbiest H. 
Published: February 2018

1. A clinical condition is described in which there are symptoms of compression of the caudal nerve roots on standing or walking, but not at rest. Seven cases are reported. 2. Myelography showed a block in the lumbar region in every case. 3. At operation narrowing of the spinal canal in part of its lumbar course was found. 4. The nature of the abnormality is discussed. It is suggested that the narrowing is due to encroachment on the spinal canal by the articular processes.
FRACTURE-DISLOCATION OF THE TROCHLEA
Authors: Potter C. M. C. 
Published: February 2018

1. Two cases of fracture-dislocation of the trochlea are described. One case was complicated by complete ulnar nerve palsy. 2. The injury is caused by direct force applied to the point of the elbow, or it may be associated with posterior dislocation of the joint. 3. Open reduction is recommended, the fragment being held in position by soft-tissue sutures alone. 4. Four other cases mentioned in the literature are reviewed.
AN EXPERIMENTAL STUDY OF MUSCLE GROWTH IN THE RABBIT
Authors: Crawford G. N. C. 
Published: February 2018

1. In young rabbits the muscle belly of the tibialis anterior was marked at intervals, either on its surface with indian ink, or in its substance by wires. The intervals between ink marks were measured directly, and those between wires by radiography. After four to seven months the measurements were repeated and the amount and site of longitudinal growth determined. The experiments showed that it occurred fairly evenly throughout the length of the muscle belly. 2. By transfer of the tibialis anterior in front of the crural ligament in young rabbits its course was reduced and the extent of contraction necessary to dorsiflex the foot was increased. The rabbits were killed when fully grown and the lengths of the tendons and muscle bellies of the tibialis anterior of the normal and experimental legs were compared. It was found that in every case the tendon of the experimental muscle was shortened and its belly lengthened in comparison with the normal. It is suggested that the increased length of the muscle belly was determined by the increased distance which it had to contract in order to dorsiflex the foot.
RANGE OF MOVEMENT OF THE GREAT TOE IN MEN
Authors: Joseph J. 
Published: February 2018

1. The range of variation in the movements at the metatarso-phalangeal and interphalangeal joints of the big toe in fifty males has been investigated by means of lateral radiographs. 2. In the "neutral" position the proximal phalanx is dorsiflexed on the metatarsal and the distal phalanx dorsiflexed on the proximal. Sometimes the distal phalanx is plantar flexed on the proximal but this is not associated with any obvious abnormality of function. 3. There is a wide variation between individuals in the amount of movement found at these joints. 4. At the metatarso-phalangeal joint dorsiflexion is much more free than plantar flexion. The opposite is the case at the interphalangeal joint. 5. There is no significant difference between the right and left sides. Only in plantar flexion at both joints are there significant reductions in the range of movement in older age groups. These reductions are not functionally important. 6. There is an inverse relationship between active and passive dorsiflexion: the greater the range of active dorsiflexion, the less is the range of additional passive dorsiflexion. 7. In lateral radiographs the head of the metatarsal is always rounded.
THE NATURE OF THE BONE CHANGES ASSOCIATED WITH NERVE INJURIES AND DISUSE
Authors: Gillespie J. A. 
Published: February 2018

1. Paralysis caused by anterior nerve root section, or by peripheral nerve section, leads to marked changes in the bones and muscles of the affected limb in experimental animals. Vascular changes are not the cause of the bone atrophy in a paralysed limb. 2. The altered properties of the bones of a paralysed limb are due almost entirely to a loss in the quantity of bone; bone quality is only slightly altered. 3. The bone changes that follow paralysis are due to the secondary loss of muscular activity. No evidence could be obtained that nerves exert any specific, trophic influence on bone.
BONE ANOMALIES OF THE TARSUS IN RELATION TO "PERONEAL SPASTIC FLAT FOOT"
Authors: Jack E. A. 
Published: February 2018

1. Twenty-three cases of tarsal anomalyâtalo-calcaneal bridge or calcaneo-navicular barâoccurring among thirty cases of "peroneal spastic flat foot" have been studied. 2. The correlation between the clinical features and the mechanical defect is discussed.
TRAUMATIC DISLOCATION OF THE HIP IN CHILDHOOD
Authors: Mason Mark L. 
Published: February 2018

1. The literature of dislocation of the hip in childhood from 1922 to 1954 is reviewed. A total of eighty-eight cases have been recorded. 2. A further case, in a child of one year and eleven months, is described. 3. Nine of the children whose cases have been recorded developed Perthes' disease of the hip after the dislocation, an incidence of 10 per cent. A similar incidence of avascular necrosis of the femoral head has been reported after dislocation of the hip in adults.
TUBERCULOSIS OF THE GREATER TROCHANTER
Authors: McNeur J. C. , Pritchard A. E. 
Published: February 2018

1. Thirty-eight cases of tuberculosis of the greater trochanter have been reviewed. 2. Classification into bursal and osseous infections is discussed, and reasons have been given for our belief that either lesion may be the primary one. 3. An attempt has been made to assess available methods of treatment. In general, conservative measures are recommended for primary lesions, and surgery for recurrences. We have the impression that chemotherapy is of definite value. 4. The incidence of spread of tuberculosis to the hip joint is discussed. In this connection, reasons have been given for condemning excision of the trochanter.
THE VASCULAR PATTERN AS AN AID TO THE DIAGNOSIS OF BONE TUMOURS
Authors: Begg A. C. 
Published: February 2018

1. Direct injection of contrast material into bone indicates its extreme vascularity, particularly near an epiphysis, and emphasises the extraordinary capacity of the minute periosteal vessels. The nutrient artery of a long bone appears to play little part in its nourishment and may be regarded as a vestigeal structure. 2. The vascular pattern of bone tumours may be investigated by injection of the appropriate artery, and sometimes, if a haemangioma is suspected, by direct injection into the lesion. 3. The examination is easily and quickly carried out by direct arterial puncture under local anaesthesia and injection of 35 per cent diodone. A tourniquet applied distally at the appropriate level is often helpful. 4. A study of the vascular pattern of suspected bone tumours has provided useful information in a positive and negative way, assisting both the diagnosis and the planning of treatment. The pathological diagnosis of some tumours, notably osteosarcomas and haemangiomas, may be made with such assurance that possible dissemination of the tumour by biopsy may be avoided.
FRACTURES OF THE TIBIAL CONDYLES
Authors: Slee Gerald C. 
Published: February 2018

1. Sixty fractures of the tibial condyles have been reviewed. Fifty were treated by conservative measures and ten by operative reduction. The fractures are classified and the etiology, age incidence, mechanism of injury, methods of treatment, and results are discussed. 2. The indications for operative reduction are described. 3. The combined split and compression types of fracture give the least satisfactory results. 4. Age is no contra-indication to immobilisation in the treatment of these fractures. 5. Emphasis is laid upon the necessity for immobilisation in the treatment of the associated ligamentous injuries. 6. It is considered that the results justify the policy of treatment described.
METHODS OF MEASUREMENT OF MUSCLE AND JOINT FUNCTION
Authors: Salter Nancy 
Published: February 2018

1. The importance of accurate methods of measuring the strength of muscles and the amplitude of joint movements in man, both in clinical fields and as criteria of normal function, is discussed. 2. The advantages and disadvantages of subjective and objective methods are reviewed. 3. The main types of apparatus used for the assessment of muscle strength in both normal and clinical conditions are described. A dynamometer of the strain-gauge type is recommended. 4. Methods of measuring the amplitude of movements in man are also described. The protractor type arthrometer is thought to be the most suitable for routine clinical work, but for research purposes a radiographic method may be preferable. 5. The following factors, which must be considered if the measurements taken are to be of greatest use, are discussed: posture, test procedure, standards for comparison, nomenclature and normal variability.
FURTHER EXPERIENCES ON THE PATHOLOGICAL INFLUENCE OF A DEVELOPMENTAL NARROWNESS OF THE BONY LUMBAR VERTEBRAL CANAL
Authors: Verbiest H. 
Published: February 2018

1. A measuring instrument is described which enables the surgeon to determine the anteroposterior diameter of the vertebral canal during operation. 2. Developmental narrowness of the lumbar vertebral canal is shown to exist and to be caused by an abnormally short antero-posterior diameter. 3. In patients with a narrow, although not abnormally narrow, lumbar vertebral canal, slight deformities such as posterior spur formation or small disc protrusions may produce particular symptoms, which are interesting from a clinical as well as from a medico-legal point of view.
TRANSPLANTATION OF EPIPHYSIAL CARTILAGE
Authors: Ring P. A. 
Published: February 2018

1. An experimental technique for the transplantation of epiphysial cartilage in the rabbit is described. 2. Autogenous transposition of the distal epiphysial cartilage of the ulna was followed by normal growth in five of eighteen animals. 3. Homogenous transplantation was unsuccessful in all the animals studied. 4. Homogenous grafting gives rise to an immunity reaction confined to the reserve Zone of the cartilage. 5. It is suggested that the difference between the fate of homogenous grafts of epiphysial and non-epiphysial cartilage lies in the vascularity of the former.
FATIGUE INFRACTION OF THE MIDDLE OF THE TIBIA IN BALLET DANCERS
Authors: Burrows H. Jackson 
Published: February 2018

1. A defect of the middle of one tibial crest is described in young healthy ballet dancers. 2. The clinical and radiological characteristics have been studied in four cases, and the histological appearances in two. 3. The defect is concluded to be an incomplete fatigue fractureâa fatigue infraction. 4. A fifth, uncertain, case has been added tentatively, as presenting a possible serious complication, namely acute fracture from muscle action. 5. The diagnosis, treatment and prognosis are mentioned, with emphasis on the importance of adequate clinical and radiological examination in cases of obscure mid-tibial pain, tenderness or swelling.
PRIMARY RUPTURE OF BRACHIAL ARTERY AND MEDIAN NERVE IN SUPRACONDYLAR FRACTURE OF THE HUMERUS
Authors: Smyth E. H.J. 
Published: February 2018

1. A case, believed to be the fifth on record, of supracondylar fracture with rupture of the brachial artery is described. 2. The relative immunity of the median nerve in these injuries is discussed, with brief reference to a recent case of complete rupture. Only a single previous report of this complication could be found. 3. It is suggested that these injuries are less uncommon than the number reported would indicate. 4. The anatomy of severe displacement is discussed, with special reference to the role of the brachialis. 5. The danger of closed reduction when the relationship of the upper fragment to the neurovascular bundle is in doubt is stressed. 6. The indications for open reduction are given.
ELECTROLYSIS AND STAINLESS STEELS IN BONE
Authors: Wright J. K. , Axon H. J. 
Published: February 2018

1. The factors producing electrolytic corrosion of stainless steels are reviewed, and it is shown how several factors operating together can accentuate corrosion in certain positions in the plated fracture. 2. These factors can be minimised by good metallurgy and good engineering on the part of the manufacturers. 3. When and if materials become metallurgically satisfactory, or a truly inert substitute for metal is discovered, it will be possible to assess the true contribution of infection, faulty operative technique and mechanical factors to the failures of internal fixation. Such a critical assessment of these probably more important factors is at present bedevilled by uncertainty as to the purely physical condition of the materials as supplied to the surgeon.
THE ARTERIAL SUPPLY TO THE ADULT CERVICAL VERTEBRAL BODIES
Authors: Harris R. S. , Jones D. M. 
Published: February 2018

1. The spinal branches of the vertebral artery were injected with a suspension of barium sulphate and the blood supply of the vertebral bodies of the lower four or five cervical vertebrae investigated radiologically. 2. Beneath the posterior longitudinal ligament there is a free dorsal arterial plexus from which a large branch arises to enter the back of the vertebral body. This vessel terminates abruptly at the centre of the body where numerous, much smaller, branches radiate towards the upper and lower surfaces. 3. The possible significance of the form of the intravertebral arteries is considered in relation to embolic lesion in vertebral bodies.
THE BLOOD SUPPLY OF DEVELOPING LONG BONES WITH SPECIAL REFERENCE TO THE METAPHYSES
Authors: Lewis O. J. 
Published: February 2018

1. Periosteal bone is supplied by periosteal vessels and endochondral bone by the nutrient artery. 2. In the earliest stages of development the metaphysis is supplied by vessels derived only from the nutrient artery. Later, metaphysial arteries derived from the periosteum take over the supply of its peripheral part, the extent of their area of supply progressively increasing. 3. In injected specimens the blood vessels approaching the epiphysial cartilaginous plate end in saccular dilations. Histological sections show these dilations to be blood-filled cartilage lacunae, with no endothelial lining and into which open the blood vessels approaching the epiphysial plate.
THE PROSTHETIC MANAGEMENT OF CONGENITAL DEFORMITIES OF THE EXTREMITIES
Authors: McKenzie D. S. 
Published: February 2018

1. Congenital defects of the extremities are described. Although the detailed anatomy is infinitely variable, a broad classification in relation to prosthetic management has been suggested. 2. Most patients with these deformities can be fitted with a prosthesis without major surgical intervention. With this they will have at least as good function as they would have after amputation. A plea is made for a conservative attitude in this respect. It is suggested that recourse to amputation should be confined to cases in which prosthetic equipment falls short of functional and cosmetic requirements, and that, when possible, it should be deferred until the child is old enough to share in the decision. 3. The prostheses applicable to the various types of deformity are briefly described. 4. The application of similar techniques to cases of acquired shortening is mentioned. 5. The incorporation of certain features of artificial arms in flail arm splints is discussed.
SUBLUXATION OF THE INFERIOR RADIO-ULNAR JOINT COMPLICATING FRACTURE OF THE RADIAL HEAD
Authors: McDougall A. , White J. 
Published: February 2018

1. Dislocation or sublaxation of the inferior radio-ulnar joint in association with fractures of the head of radius is discussed. 2. The incidence of the complication is greater than is generally supposed, and figures are given to support this finding. 3. The subluxation is not always associated with symptoms, and the degree of displacement may not be sufficient to be recognised clinically. 4. The anatomy and mechanism of the displacement have been investigated experimentally, and the results of the experiments are described.
FRACTURE-DISLOCATION OF HIP WITH DISPLACEMENT OF BONE FRAGMENT INTO ACETABULUM DURING CLOSED REDUCTION
Authors: Jeffery C. C. 
Published: February 2018

A case of posterior fracture-dislocation of the hip complicated by displacement of a segment of the acetabular rim into the joint at the time of closed reduction is reported. In treatment, it is stressed that the posterior approach to the hip should be used to minimise further damage to the soft tissues about the joint.
INTRAVASCULAR OSTEOCLASTS
Authors: Sladden R. A. 
Published: February 2018

1. In five out of eleven cases of osteoclastoma it was found that osteoclasts were present inside clearly defined blood vessels either within the tumours or in the tissues immediately surrounding the tumours. In two further cases it was found that osteoclasts protruded into the vessels although they were not lying free within the vessels. 2. The possible modes of entry of these cells into the blood stream are discussed. Although accidental dissemination of osteoclasts into damaged blood vessels could not be excluded, it was felt that the process was equally likely to be related to some inherent property of the osteoclasts. From further observations it is suggested that osteoclasts are capable of local destruction of the connective tissues of the vessel walls, probably by enzyme action. Such an action might be analogous to the processes by which, in the opinion of many, osteoclasts bring about the resorption of bone. 3. There did not seem to be any relationship between the finding of intravascular osteoclasts and the malignancy of the tumour, assessing the latter either on histological or clinical grounds. The finding of intravascular osteoclasts does not therefore appear to be of any prognostic significance.