bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE MICROVASCULAR PATTERN OF THE ROTATOR CUFF
Authors: Rathbun James B. , Macnab Ian 
Published: February 2018

1. The avascular zone in the tendon of the supraspinatus near its insertion was not seen in the other tendons comprising the rotator cuff, except for the superior portion of the insertion of the infraspinatus which, on occasions, showed a small avascular area. The biceps tendon, however, also showed an avascular zone as it coursed over the head of the humerus. It is suggested that the anatomical disposition of these tendons makes them subject to constant pressure from the head of the humerus, which tends to wring out the blood supply to these tendons when the arm is held in the resting position of adduction and neutral rotation. 2. Although this study did not produce any evidence that the relative avascularity of the tendons over a prolonged period could be indicted as the sole cause of the degenerative changes that so commonly occur, it was noted that the degenerative changes occurred first and that they were always most extensive in the areas of avascularity. It was also observed that the zones of relative avascularity preceded, and were not the result of, the degenerative changes. 3. With the onset of tendon degeneration, secondary vascular phenomena were observed. Firstly, there was a reaction that appeared to be a foreign body inflammatory response with the development of vascular tufts of granulation tissue. It was thought that these vascular changes were secondary to the breakdown in the tendons and were not the cause of the breakdown as previously suggested by Anderson and Moore. it was noted, moreover, that with the progression of degenerative changes in the supraspinatus tendon, the tendon became much attenuated and, as it did so, the zone of relative avascularity appeared to extend. This secondary shut-down of the vascular bed might well be caused by an increased tension in the tendon. In those tendons in which spontaneous rupture had occurred, it was noted that the major part of the tendon proximal to the rupture was avascular and showed evidence of much degenerative change. This study therefore suggests that in the operative repair of such lesions it is necessary to excise the degenerate avascular tendon in order to effect a sound repair. It is also suggested that detachment of the supraspinatus muscle from the supraspinous fossa in order to advance the whole muscle belly is the only technique possible to enable the surgeon to replace healthy tendon directly into bone, as suggested by Debeyre and his colleagues.
PROLONGED EXTERNAL PRESSURE AS A CAUSE OF ISCHAEMIC CONTRACTURE
Authors: Conner Alan N. 
Published: February 2018

1. Six patients are reported in whom ischaemic muscle contractures followed prolonged external pressure. 2. Systemic hypoxaemia may be a predisposing factor in patients with overdoses of central nervous system depressants. 3. If treatment is to be successful, early diagnosis is required, and the most important factor is an awareness of the condition. 4. The treatment of the late case is discussed.
THE TREATMENT OF DUPUYTREN'S FRACTURE-DISLOCATION OF THE ANKLE
Authors: Colton C. L. 
Published: February 2018

1. A retrospective clinical and radiological study has been undertaken of forty-six cases of closed Dupuytren fracture-dislocation of the ankle joint in adults. 2. The final results are analysed with reference to the methods of treatment employed. 3. The problems of this injury are discussed referring both to the results of this investigation and to the past literature.
A STUDY OF FEMORAL TORSION IN CHILDREN
Authors: McSweeny Anthony 
Published: February 2018

1. After exclusion of the well known causes of torsion such as congenital dislocation of the hip, Legg-Perthes' disease, cerebral palsy and congenital talipes equinovarus, examination of 1,320 nearly normal children disclosed an incidence of 13·6 per cent toeing-in or toeing-out. 2. There was a female preponderance of seven to three on presentation decreasing to four to three in uncorrected cases. 3. There was persisting upper femoral torsion of greater than 10 degrees in two-thirds of all cases of toeing-in whether corrected or uncorrected. 4. When correction of toeing-in occurred it took place between four and seven years of age, but mainly at five years. 5. There was a normal angle of anteversion in one-third of children whose toeing-in was not corrected. This suggests the possibility of acetabular maldirection. 6. Uncorrected torsional stresses may play a part in the later development of osteoarthritis.
POLYCENTRIC KNEE ARTHROPLASTY
Authors: Gunston Frank H. 
Published: February 2018

1. A concept and design of polycentric knee arthroplasty based on the biomechanics of normal knee movement is presented. The diseased articular surfaces of the femoral condyles and tibial plateaus are replaced separately by prosthetic implants secured with cement. The collateral and cruciate ligaments are retained to maintain joint stability. 2. The early results from this arthroplasty in twenty-two knees are assessed. The operation gave relief of pain in twenty-two, a range of movement greater than 90 degrees in thirteen, no lateral instability in sixteen of twenty-two knees and an increased degree of mobility for nineteen of twenty individuals (two bilateral arthroplasties). 3. Operative complications consisted of delayed wound healing in four knees and common peroneal nerve palsy in one. One knee was subsequently arthrodesed for lack of functional improvement.
OSTEOCHONDRAL FRACTURES AND THEIR RELATIONSHIP TO OSTEOCHONDRITIS DISSECANS OF THE KNEE
Authors: Aichroth Paul 
Published: February 2018

1. In sixty mature rabbits osteochondral fractures of various types were made in the medial femoral condyle. 2. The fractures or fragments which remained stable united but those in which movement occurred progressed to non-union. 3. An ununited osteochondral fragment resembled osteochondritis dissecans in the human both radiologically and histologically. 4. Experiments in the cadaveric knee show that the patella articulates with the classical site on the intercondylar aspect of the medial femoral condyle in full flexion of the joint and here an osteochondral fracture could be sustained. 5. It is concluded that the fragment in osteochondritis dissecans follows an osteochondral fracture which remains ununited.
THE EARLY MANAGEMENT OF VARUS FEET IN MYELOMENINGOCELE
Authors: Walker Geoffrey 
Published: February 2018

1. A conservative approach to the varus deformity of anaesthetic feet in infants with myelomeningocele is advocated. Thirty-three of thirty-five varus feet treated by this method, supplemented when necessary by a minor operation to correct equinus, responded satisfactorily in this prospective study of twenty-four infants treated from birth. 2. A rotation flap incision has proved of considerable advantage in the rare instances when an extensive medial release is required.
THE MECHANISM OF TARSO-METATARSAL JOINT INJURIES
Authors: Wiley James J. 
Published: February 2018

1. Twenty cases of tarso-metatarsal joint injury have been studied with regard to the mechanism of injury, and experiments have been done on cadavers to confirm clinical impressions. 2. Injuries of the tarso-metatarsal joints occur by direct and indirect mechanisms, the latter being more common. 3. Indirect injuries occur in at least two ways-namely, acute abduction of the forefoot and plantar-flexion of the forefoot. 4. Most of the indirect injuries occur when the ankle joint is in a plantar-flexed position. 5. Whereas this foot injury once gained prominence on the field of battle amongst cavalrymen, it is currently associated with the motor car, the step ladder, the toboggan, the joy-rider, and commonly the simple misguided step.
THE HEALING OF FRACTURES OF THE LOWER END OF THE RADIUS
Authors: Sevitt S. 
Published: February 2018

1. The processes of repair and union were studied in six fractures of the lower end of the radius, ranging in age from ten days to five and a half months. 2. The major pathway to union is medullary, through the proliferation around the fracture of vascular granulation tissue with osteogenic power. This invades and then bridges the fracture and is followed by the laying down of trabeculae of new bone. 3. Success depends on the growth of new capillaries across the fracture line, some of which mature and re-establish the meduilary circulation. 4. Indriving of the lateral cortex of the proximal fragment into the distal spongy medulla at the time of injury (in Colles's fractures) permits bridging between proximal periosteal and distal meduliary callus. Otherwise periosteal proliferation plays only a subsidiary role in union. 5. Fissure fractures of the lower articular surface were frequent and they also healed by the invasion of granulation tissue proliferating in the medulla nearby.
THE EFFECT OF FROZEN IRRADIATED BONE HOMOGRAFTS ON THE HEALING OF DEFECTS IN THE MANDIBLE AND FEMUR OF THE RAT
Authors: Cleaton-Jones P. E. , Retief D. H. , Maier G. 
Published: February 2018

1. The effects of frozen irradiated homogenous bone grafts on the healing of circumscribed defects in the mandibles and femora of forty albino rats have been studied. 2. The grafts were well tolerated by the host animals and did not appear in any way either to stimulate or to inhibit osteogenesis. The rate of healing of the defects containing the homografts compared favourably with that of the control defects.
BONE GRAFTS AND CHRONIC OSTEOMYELITIS
Authors: de Oliveira José C. 
Published: February 2018

1. In the treatment of chronic osteomyelitis the most troublesome factor is the infected bone cavity. This is seldom obliterated spontaneously by bone regeneration. The number of procedures designed to fill the cavity, since the beginning of the century, show how much it troubles the surgeon. 2. The use of bone grafts in the treatment of chronic osteomyelitis has been studied. One hundred and twenty cases are reviewed (the largest series in the literature), the follow-up being between two and ten years. The most common lesion was a bone cavity, with or without a sequestrum. 3. Treatment must include the removal of infected soft tissues as well as sclerosed bone, and must be done under appropriate antibiotic control. The value of cancellous bone grafts in filling infected cavities in the metaphysio-epiphysial regions is especially emphasised. 4. The results were gratifying, only four relapses occurring in 120 cases.
THE PATTERN OF BONE AND CARTILAGE DAMAGE IN THE RHEUMATOID KNEE
Authors: Chaplin D. M. 
Published: February 2018

1. Fifty knees affected by rheumatoid arthritis were studied in detail at synovectomy. 2. The destructive lesions found were relatively constant and are described in detail. 3. Cartilage lesions were much more common than was expected radiologically. 4. The pattern described suggests that articular cartilage is destroyed by contact with diseased synovial membrane but protected by contact with another cartilaginous surface.
ARTICULAR CARTILAGE: A REVIEW AND SCANNING ELECTRON MICROSCOPE STUDY
Authors: Clarke Ian C. 
Published: February 2018

1. The fibrillar networks of adult human articular cartilage, taken from femoral and acetabular specimens, have been systematically examined by scanning electron microscopy. The internal structures revealed by rupturing the tissue were compared with published findings from transmission electron microscope studies. 2. Though this technique demonstrated the internal fibrillar appearance of cartilage to a remarkable degree, it had several attendant limitations. On final drying, specimens generally exhibited shrinkage which varied within wide limits; this could have altered the internal architecture to some extent. In addition, the rupturing technique, which at the time of this investigation was the only satisfactory method of revealing the fibrillar cartilage structure, may well have had a great influence on the fibril orientations. 3. The fibrils revealed no characteristic collagen periodicity and were considerably thicker than those observed by transmission electron microscopy. It is suggested that a coating of mucin on the collagen fibrils might account for this. 4. At low magnifications the torn layers in the fractured surfaces extended radially from the calcified zone and turned obliquely at or near the articular surface to merge with the distinctly layered superficial zone, thus forming arcade-like structures. That these were not artefacts produced by the fracturing technique was shown by their similarity to the classical arcade pattern of light microscopy. However, the factor which governed the direction of these planes of weakness, be it collagen, mucopolysaccharides or cells, could not be satisfactorily determined. 5. At higher magnifications only three regions of distinct fibrillar organisation could be identified: 1) a surface layer consisting of a random fibrillar network; 2) a superficial zone composed of layers of fibrillar network, intersecting and overlapping in planes parallel to the surface; and 3) elsewhere below the superficial zone a network of virtually random fibrils which extended to the calcified region with apparently little variation in thickness or density. There was little variation from this pattern even in aged fibrillated specimens. 6. At the lower magnification range the scanning electron microscope has revealed the arcade pattern described by light microscopy, while at the higher magnifications the fibrillar organisation as seen by scanning electron microscopy correlated well with the concepts developed by transmission electron microscopy, that is, a random network of fibrils overlaid at the articular surface by a membrane-like system of bundled fibrils. 7. A possible role in the transmission of joint forces is outlined for the above fibrillar organisation.
THE SEMITENDINOSUS TENODESIS FOR RECURRENT DISLOCATION OF THE PATELLA
Authors: Baker R. H. , Carroll N. , Dewar F. P. , Hall J. E. 
Published: February 2018

1. Semitendinosus tenodesis with adequate lateral release for recurrent dislocation of the patella has a high success rate and a low complication rate. 2. The technique of operation is simple. 3. Its particular application is in the young patient before epiphysial closure, although it can give good results in the older patient.
ARTHROGRAPHY OF THE KNEE BEFORE AND AFTER SYNOVECTOMY FOR RHEUMATOID ARTHRITIS
Authors: Taylor A. R. , Ansell B. M. 
Published: February 2018

1. In twenty-five patients with rheumatoid arthritis of the knee examined by contrast arthrography certain typical features were encountered. These consisted of enlargement of the suprapatellar pouch and loss of the normally smooth outline of the joint cavity because of nodular filling defects. In some cases less definite filling defects were seen, due to loose fibrinous deposits, particularly in popliteal cysts. 2. This method of assessment of the results of synovectomy of the knee correlated well with the clinical findings. The more satisfactory the clinical result the more normal the arthrograph. Patients who had recurrence of pain, swelling and tenderness in the knee showed arthrographic findings similar to those before operation.
CRYPTOGENIC METASTASES IN UGANDA AFRICANS
Authors: Templeton A. C. , Hutt M. S. R. , Dodge O. G. 
Published: February 2018

1. Secondary tumours in bone are common in Uganda. 2. Of the five tumours which often give rise to bone metastases in Europe—breast, bronchus, thyroid, prostate and kidney—only the kidney is an unimportant site in Uganda, its place being taken by hepatocellular carcinoma. 3. Most primary bone tumours occur around the knee whereas tumours ofthe skull, vertebrae and head of femur are very likely to be secondary. The thyroid was the most likely primary site for secondary tumours in women. In men the liver, bronchus and prostate were common primary sites.
WEIGHT-BEARING AREAS IN THE HUMAN HIP JOINT
Authors: Greenwald A. S. , Haynes D. W. 
Published: February 2018

1. A specially designed loading apparatus and dyeing technique have been used to demonstrate the weight-bearing areas in fifty-one normal adult hip joints. 2. Under loads and positions typical of the stance phase of walking the entire articular surface of the acetabulum is involved in weight-bearing. This contact area is reproduced on the femoral head, and its position determined by the attitude of the femur to the acetabulum. 3. With loads typical of the swing phase, the dome of the acetabulum and corresponding areas on the femoral head are not involved in weight-bearing. 4. The results are compared with the conclusions of previous investigators and their possible significance with regard to joint degeneration is discussed.
HOMOCYSTINURIA AND MARFAN'S SYNDROME
Authors: Brenton D. P. , Dow C. J. , James J. I. P. , Hay R. L. , Wynne-Davies Ruth 
Published: February 2018

1. Skeletal and other clinical features in twenty-three patients with homocystinuria have been compared with those in sixteen patients with Marfan's syndrome. 2. The two diseases are clinically similar but florid arachnodactyly and scoliosis are commoner in Marfan's syndrome, whereas widening of epiphyses and metaphyses of long bones is a distinctive feature of homocystinuria. 3. Patients with homocystinuria frequently have osteoporosis at a young age with a high incidence of vertebral involvement including biconcavity and flattening. Patients with Marfan's syndrome do not have osteoporosis and may have excessively tall vertebrae. 4. Mental retardation and thrombosis are common in homocystinuria and uncommon in Marfan's syndrome. 5. Homocystinuria is most probably inherited as an autosomal recessive and Marfan's syndrome as an autosomal dominant. 6. The two diseases should be differentiated because of the thrombotic risk in homocystinuria, and also because in this disease there is a possibility of treating the biochemical defect. 7. Although patients with homocystinuria may present to the orthopaedic surgeon with osteoporosis, severe genu valgum or scoliosis, the disease is an uncommon cause of these defects.
THE ROLE OF ARTHROSCOPY IN THE MANAGEMENT OF DISORDERS OF THE KNEE
Authors: Jackson Robert W. , Abe Isao 
Published: February 2018

1. A critical analysis of the findings in 200 knees examined by arthroscopy at least one year previously has been carried out to assess its value in the management of a wide variety of disorders. 2. Arthroscopy is a practical and valuable procedure with minimal associated morbidity or complications. 3. The increased accuracy of diagnosis helps to avoid unnecessary operations and to base methods of treatment on a better knowledge of the pathology.
HIP INSTABILITY IN PATIENTS WITH MYELOMENINGOCELE
Authors: Rueda J. , Carroll N. C. 
Published: February 2018

1. The problem of paralytic hip instability has been studied in a series of twenty-one patients brought to a spina bifida clinic. 2. Thirty iliopsoas tendon transfers were done in an attempt to reduce deformity and improve hip stability. 3. At the time of review, ten of these hips were stable and twenty were unstable. Ten hips were improved by operation, and one hip was worse. The other nineteen remained the same. 4. All of the children except one were capable of walking with an orthotic device. 5. Some of the complexities of the problem of paralytic hip instability in the patient with myelomeningocele are discussed.
SCREW FIXATION IN THE MANAGEMENT OF THE FRACTURED CARPAL SCAPHOID
Authors: Maudsley Roy H. , Chen S. C. 
Published: February 2018

1. A modification of the McLaughlin technique of lag screw fixation of the fractured scaphoid is described. 2. Fifty-six patients operated upon between 1956 and 1966 have been reviewed and their fractures classified under the headings recent, delayed union and non-union. 3. Plaster casts were avoided and early return to work encouraged; 95 per cent did so within two months. 4. Of twenty-two recent fractures, including three perilunar trans-scaphoid dislocations, nineteen united; of fifteen showing delayed union, eight united: and of nineteen cases of non-union, only two united. 5. The function of the wrist in the seventeen cases of persistent non-union stabilised by lag-screw was surprisingly good; only one patient has required arthrodesis to date. 6. The indications and contra-indications for the operation are discussed.
RADIAL TUNNEL SYNDROME
Authors: Roles N. C. , Maudsley R. H. 
Published: February 2018

1. Resistant cases of tennis elbow are explained on the basis of an entrapment neuropathy of the radial nerve and its branches. 2. An operation is described to explore these nerves through an anterior muscle-splitting incision. 3. Thirty-eight elbows in thirty-six patients have been operated on with improvement in all.
REDUCTION OF ACUTELY SLIPPED UPPER FEMORAL EPIPHYSIS
Authors: Casey Brian H. , Hamilton Henry W. , Bobechko Walter P. 
Published: February 2018

1. The results of thirty-five acutely slipped upper femoral epiphyses, treated from 1950 to 1969, are presented. Avascular necrosis of the femoral head occurred in five cases. 2. Skin traction with medial rotation, followed in three to four days by internal fixation, without further manipulation, is recommended so that this iatrogenic complication may be avoided.
CYSTIC ANGIOMATOSIS OF BONE
Authors: Boyle W. J. 
Published: February 2018

1. Three cases of cystic angiomatosis of bone are presented and the literature is reviewed. 2. The typical radiological appearances are described and illustrated. 3. The diagnosis must be confirmed by biopsy, and it is essential that the bone removed should be from an involved rib. 4. The prognosis is dependent upon extraskeletal visceral involvement and is not influenced by radiotherapy or chemotherapy. Splenectomy may improve the chance of survival when the spleen is the only viscus involved.
INJURIES OF THE TARSO-METATARSAL JOINTS
Authors: Wilson D. W. 
Published: February 2018

1. Twenty-two feet injured at the tarso-metatarsal level are reviewed. 2. Experiments with eleven cadaveric feet are reported. 3. The injuries are caused by forced plantar-flexion combined with rotation in most cases. Crushing of the foot alone often does not produce dislocation. 4. A classification is suggested. 5. The results of various treatments in this small series are presented. It is concluded that anatomical reduction is important, achieved if necessary by operation and internal fixation.
ISOLATED TRABECULAR FATIGUE FRACTURES IN THE FEMORAL HEAD
Authors: Todd R. C. , Freeman M. A. R. , Pirie C. J. 
Published: February 2018

1. The femoral head has been examined in specimens taken from cadavers, patients suffering subcapital fracture of the femoral neck and patients undergoing total replacement arthroplasty for osteoarthrosis and rheumatoid arthritis. 2. Lesions have been seen, some of which appear to be uniting fatigue fractures of individual trabeculae. 3. It is suggested that excessive cyclical loading, sometimes leading to fatigue fractures, may represent a fundamental pathological process of general importance in the evolution of certain skeletal and articular diseases.