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At least 775 records · Page 43Linked to original sources
PubMed1998

[Investigating methods for age estimation (1). Height of the apex of the medullary cavity of the humerus].

The relationship between age and the height of the proximal apex of the medullary cavity of humerus was investigated on 13 male bodies (29-62 years) and 12 female bodies (22-80 years) and a provisional criterion for age estimation was obtained. When the apex is (1) at a height of the surgical neck, the estimated age is under 50 years in both sexes, (2) at the epiphyseal line, over 50 years in males, and from 50 to 75 years in females. In a few cases, however, the apex reaches the line even in the very young age group (20-30 years). (3) When a cavity or rough structure is present above the line in addition to phase (2), the estimated age is over 75 years in females, but unknown in males. We also discuss the validity of Koshinaga's criterion (1951).

Adult↗
PubMed1976

[Partial replacement of the humerus].

Based on twelve cases, this paper reviews the possibilities of partial replacement of the humerus. In 6 cases an interpolation was successfully performed replacing a resected part of the humeral shaft while maintaining the shoulder and elbow joint. The interpolated material is polyethylene, centrally reinforced by metal. A resection of up to 17 cm was performed. The longest period of observation is more than 2 years. This operative procedure is preferred to the methods so far used in cases of extensive destruction of the humeral shaft. Primarily, osteolyses are an indication for this type of operation.

Adult↗
PubMed1999

A visual method of determining the sex of skeletal remains using the distal humerus.

This study introduces a new method of determining sex based on four morphological features of the posterior, distal humerus. The technique was developed on a 20th century anatomy series, the University of Toronto Grant Skeletal Collection, and was tested on 35 known individuals from the University of New Mexico Documented Collection and 93 individuals from the William M. Bass Donated Skeletal Collection. Four statistically significant characteristics relating to the carrying angle of the arm are identified (p < 0.05). Together, they are capable of determining sex with 92% accuracy.

Female↗
PubMed1997

Polycaprolactone/glass bioabsorbable implant in a rabbit humerus fracture model.

Research in improved materials and methods for internal fixation has centered on internal fixators made of bioabsorbable materials such as polylactic acid, polyglycolic acid, and polyparadioxanone. These materials have two problems: the first is a postoperative complication related to a delayed inflammatory response; and the second is low strength characteristics. An alternative material developed to alleviate these problems is a composite of phosphate glass fibers embedded in the polymer polycaprolactone, referred to as PCL. In this study, intramedullary pins made of PCL were compared to stainless steel pins in a rabbit humerus osteotomy model. Specimens were harvested at 0, 6, and 12 weeks postoperatively, radiographs and mechanical testing to failure were performed at each time interval, and tissue was examined microscopically at 6 and 12 weeks. Histologic results showed PCL pins to be well tolerated with minimal inflammation around the pin. Mechanical testing revealed the PCL fixation to be weaker initially than the stainless steel fixation. There was significant stress shielding of stainless-steel-healed rabbit humeri when compared to the PCL/bone humeri. All osteotomies immobilized with PCL healed with abundant periosteal callus production.

Absorption↗
PubMed2003

Primary non-Hodgkin lymphoma of the humerus following traumatic injury: case report.

A case of primary non-Hodgkin lymphoma of the right humerus which occurred in a 21-year-old male patient after an impact to the right shoulder in a car accident in July 1983 is described. Seventeen years after the injury, due to a civil lawsuit, the biopsy material was revised. Immunohistochemical analysis showed CD20 and CD79a positivity on large pleomorphic cells, while small reactive lymphocytes were CD3, Bcl-2 and CD20 positive. Molecular analysis carried out with PCR revealed a monoclonal B-lymphocyte population. The diagnosis of diffuse large peripheral B cell lymphoma of the bone was confirmed. The present case concurs with the literature on primary bone lymphoma, in which the diagnostic problem, trauma-related presentation and an excellent prognosis of malignant tumour are emphasized.

Accidents, Traffic↗
PubMed1994

Comminuted intra-articular fractures of the distal humerus.

Seventy-five intra-articular fractures of the distal humerus were treated from 1980 to 1991 in our hospital by open reduction and internal fixation with AO small and mini-fragment instrumentation. Müller's classification into C1, C2 and C3 types was used and the results graded by Burri and Lob's criteria after a minimum follow up of 1.6 years to a maximum of 12 years. Results were satisfactory in 77%, fair in 16% and poor in 7%. The correct indications are important together with anatomical reduction and postoperative physiotherapy. These results are encouraging compared with others previously reported.

Adolescent↗
PubMed1991

Delayed open reduction for supracondylar fractures of the humerus.

Twenty children with grade IV supracondylar fractures of the humerus had an open reduction 11 to 17 days after injury. The delay was due to swelling and blisters. Most patients recovered a useful range of movement and there were no complications. A posterior approach with V-Y plasty of the triceps makes it easy to align the fragments and reduces the incidence of cubitus varus. Apprehension about the risk of increasing the extent of myositis ossificans is unfounded.

Child↗
PubMed1985

Posterior dislocation of the shoulder with a large anteromedial defect of the head of the humerus. A case report.

A new surgical technique for treating a posterior dislocation of the shoulder with a large anteromedial defect of the humeral head is described; it can be applied to those very severe dislocations that might otherwise be considered to need replacement or arthrodesis. A transverse osteotomy below the surgical neck of the humerus with lateral rotation of the head into anteversion limits medial rotation and this prevents the edge of the defect impinging on the posterior edge of the glenoid to cause redislocation.

Adult↗
PubMed1983

[Closed intramedullary nailing of fractures of the shaft of the humerus].

Fifty seven fractures of the shaft of the humerus were treated by closed intramedullary nailing without reaming of the proximal part of the bone. Fifty three of the fifty seven fractures healed promptly with an average time to union of 52 days. The technique of operation is described and the authors compare the results of their management with other methods of treatment. The indications for the use of closed nailing are discussed and its role in the treatment of pathological fractures and ununited fractures indicated.

Adolescent↗
PubMed1988

The Neer classification of fractures of the proximal humerus. An assessment of interobserver variation.

The reliability of the Neer classification of proximal fractures of humerus was examined by determining the agreement between pairs of observers using weighted kappa statistics. Anteroposterior and lateral radiographs of 100 surgical neck fractures were grouped independently by four observers. A low degree of agreement was found, especially between the most inexperienced observer and the rest. Considering the therapeutic consequences of a correct classification, these fractures should be assessed by experienced orthopedic surgeons or radiologists.

Humans↗
PubMed1979

[The supracondylar fracture of the humerus in children (author's transl)].

To find out the cause of posttraumatic varus and valgus deformity of the elbow a long-term follow-up examination of 183 dislocated and 20 undislocated supracondylar extension-fractures of the humerus was done. There were different methods of treatment: In most of the cases closed reduction was performed and fixation in acute angle-plaster or by percutaneous radial or radial and ulnar wires. 75% showed radiologically and 55% clinically an alteration of the carrying angle. The clear reason for this deformity was a rotation displacement, which leads in oblique fractures directly, in transverse fractures--caused by an instability--indirectly seldom to a valgus, in most of the cases to a varus deformity of the elbow. A special quotient to judge the rotation displacement is presented: the rotation failure quotient (rfq). There is no influence of lateral compression to the carrying angle. Lateral tilting is in any case a result of rotation displacement. Growth disturbance after supracondylar fractures is possible without lesion of the epiphysial plate: but as growth disturbances are seldom and their extent small, they are of no significant clinical importance. Extension displacement of the distal fragment will be spontaneously corrected in ca. 80% of all cases during the further growth. The clinical importance of posttraumatic deformities and the primary management to avoid them is discussed. The crossed percutaneous rotation-stable wire osteosynthesis is recommended as the best way of treatment. For all kinds of treatment the challenge is asked to avoid the ventral spur as a sign of rotation till consolidation of the fracture. By correct reposition in all other planes complicated measurements and reflections, as for instance the alpha-angle by Baumann, oblique or transverse fracture, pro- or supination of the forearm during fixation a.o. are unnecessary.

Adolescent↗
PubMed1982

Intercondylar T-fractures of the humerus in adults.

The intercondylar T-fractures of the distal humerus in adult are difficult fractures to manage and various recommendations for treatment have been presented. Thirty-nine patients with these fractures were treated as in-patients at the Departments of Orthopaedic Surgery in Gothenburg 1973-1977. Twenty-eight fractures were treated surgically and eleven conservatively. Best results were seen in patients treated with exact anatomical reduction and stable internal fixation. From this study we concluded that: A perfect reduction which is necessary for good final result is difficult to achieve with closed methods and most of these fractures should be treated by open reduction and stable internal fixation.

Adolescent↗
PubMed1996

Late vascular complication after fracture of the proximal humerus.

A case of late vascular complication after a fracture of the proximal humerus is presented. The main clinical feature was neurological loss of the brachial plexus, while angiography showed no rupture or false aneurysm. The long delay before surgical intervention caused irreversible damage to the nerves. Early diagnosis and surgical intervention are emphasized.

Angiography, Digital Subtraction↗
PubMed1986

Comminuted fractures of the proximal humerus treated with hook plate.

Good results were obtained using a hook plate to fix bone in 18 cases of fracture of the proximal humerus in which the bone was greatly comminuted or dislocated. The hook plate protects the fixed area against rotation, shear stress and flexion much better than other fixation methods.

Adolescent↗
PubMed1986

Entrapment of the median nerve and brachial artery after supracondylar fractures of the humerus in children.

Four patients, all children, with dislocation and entrapment of the median nerve and brachial artery following supracondylar fractures of the humerus are described. Circulation and neural function were restored in all cases by operation. Exploration of the neurovascular structures is recommended if dislocation and entrapment of the median nerve and brachial artery are suspected.

Brachial Artery↗
PubMed1988

A special technique of compound osteosynthesis of the distal humerus. A case report about extramedullary blast crisis in chronic myelogenous leukemia.

In a rare case of chronic myelogenous leukemia, extramedullary myeloblast crisis occurred in the distal humerus after 27 years. The pathological fracture was stabilized with double-plate compound osteosynthesis. The small distal fragment was stabilized without restriction of the range of movement of the elbow joint. The osteosynthesis remained stable until the patient died.

Blast Crisis↗
PubMed1989

Refixation of muscular insertions after endoprosthetic replacement of the proximal humerus.

We describe the refixation of muscle insertions after resection of the proximal humerus in tumor patients. The prosthesis specially designed for this purpose carries large drill holes in the places corresponding to the anatomical sites of the muscle insertions. The muscles are attached to the prosthesis by means of tendon strips from the fascia lata. This can be expected to produce better functional results and to prevent subluxation.

Biomechanical Phenomena↗