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Biomedical subjects

M C Harper

Publications and source records attributed to M C Harper.

At least 55 records · Page 3Linked to original sources
PubMed1987

Primary iliopsoas bursography in the diagnosis of disorders of the hip.

The iliopsoas bursa is a well-defined anatomic structure that has been involved in various diseases about the hip, including osteoarthritis, rheumatoid arthritis, pigmented villonodular synovitis, and synovial chondromatosis. Demonstration of the iliopsoas bursa using contrast material has been reported during hip arthrography and inadvertently during angiography, but no direct or primary methods of iliopsoas bursography have been reported. A technique of primary bursography under fluoroscopy is described wherein filling of the bursa with contrast material allowed the observation of movement of the iliopsoas musculotendinous unit across the front of the pelvis during motion of the hip. This technique, which was of significant benefit in determining the etiology of two cases of the snapping hip syndrome of the internal variety, is simple, easily reproducible, and has clinical application.

Adult↗
PubMed1987

Salmonella vertebral osteomyelitis treated with cefotaxime.

The antimicrobial therapy of systemic salmonella infections is presently limited to ampicillin, chloramphenicol, and sulfamethoxazole and trimethoprim. Infrequently, alternative therapy may be necessary. We report the successful treatment of a case of Salmonella vertebral osteomyelitis with cefotaxime sodium.

Adolescent↗
PubMed1986

Localized acquired hypertrichosis associated with fractures of the arm in young females. A report of two cases.

Two cases of transient hypertrichosis of the upper extremity in young females associated with closed fractures are presented in support of the concept of the "regional acceleratory phenomenon" as proposed by Frost wherein trauma evokes increased regional blood flow and increased metabolism on the part of all local soft tissues. This abnormality which was of much concern in terms of cosmesis resolved over approximately six months.

Adult↗
PubMed1985

Ender nailing for peritrochanteric fractures of the femur. An analysis of indications, factors related to mechanical failure, and postoperative results.

Of 100 patients with a peritrochanteric fracture of the femur treated by the Ender technique, we reviewed the cases of seventy-nine after an average follow-up of 11.4 months in order to clarify the indications for the procedure and investigate variables that may affect the results. The variables that correlated with the failure rate appeared to be the quality of the reduction, the number of nails used, the experience of the surgeon with the technique, and the degree of fracture instability. Nail placement in terms of medial-lateral and anterior-posterior positioning within the femoral head, however, did not appear to correlate. The Ender technique seems to be reasonably effective both for the treatment of stable intertrochanteric fractures and, if a good reduction and four or more nails are used, for the treatment of four-part unstable fractures. We do not recommend the technique for fractures with a subtrochanteric component unless mobilization of the patient can be delayed.

Adult↗
PubMed1985

Fractures of the femur treated by open and closed intramedullary nailing using the fluted rod.

Fractures of the shaft of the femur were treated by intramedullary nailing using the fluted rod, and I compared techniques of closed nailing (eighty fractures) with open nailing (thirty-nine fractures). A larger percentage of fractures of the proximal one-third of the femur and of open and severely comminuted fractures were treated open, but no significant difference in the average time of hospitalization of the two groups was noted. Operative morbidity appeared greater for the fractures that were treated open, while intraoperative complications predominated in the fractures that were treated closed. The two groups had a similar incidence of postoperative complications except for rotational malunion, which occurred more frequently in the fractures that were treated closed. The time to full weight-bearing on the extremity, type and rate of callus formation, time to osseous union, and extent of residual disability also appeared similar. Although a closed technique continues to be preferred for the majority of fractures of the femoral shaft, an open technique appeared to have some advantage for the more severely comminuted injuries in terms of enhancement of stability of the fracture.

Adolescent↗
PubMed1984

Ununited fractures of the femur stabilized with the fluted rod.

Sixteen patients with ununited fractures of the femoral shaft were treated by the fluted intramedullary rod. Five cases were considered delayed unions and eleven nonunions. Fourteen fractures were managed by an open technique and two by a closed technique. Three of four cases treated open without a bone graft failed to unite after the initial nailing. These three fractures subsequently united following bone grafting. Two were renailed with a larger rod. Eventually, all 14 fractures united. The fluted rod appears to be an effective device for treating a variety of ununited fractures of the femur. Bone grafting in association with an open technique is advisable and is especially recommended when interposed connective tissue and bone have had to be excised from the fracture site.

Adult↗
PubMed1983

Isobutyl 2-cyanoacrylate as an osseous adhesive in the repair of osteochondral fractures.

An in vivo evaluation of isobutyl 2-cyanoacrylate as an osseous adhesive was done in an effort to answer two questions: Used in limited amounts, can this monomer maintain the reduction of an unstable intra-articular osteochondral fracture while allowing for fracture healing around the sites of adhesive placement? Used in limited amounts, in this monomer toxic to adjacent viable bone? Osteochondral fractures were created in 32 dog knees. In 16 knees, the fracture reduction was secured with three small drops of adhesive placed around the periphery of the fracture surface. In 16 control knees no adhesive was used. Eighty-one percent of the fractures in the adhesive-treated group united compared to 56% of the control group. Although the difference in number of fractures that healed in the two groups is not definitely statistically significant and no conclusion was drawn as to effectiveness of the adhesive, osseous healing was noted to proceed around the sites of adhesive placement and the monomer appeared nontoxic to adjacent bone.

Animals↗
PubMed1983

Proximal femoral osteotomy: a trigonometric analysis of effect on leg length.

A trigonometric analysis of the effect of a proximal femoral osteotomy, either dome or cuneiform, on leg length was done to aid the preoperative planning for this surgery. Change in leg length may be determined for a dome osteotomy by multiplying the length of the head-neck segment by the difference between the cosines of the preoperative and postoperative neck-shaft angles as measured from the vertical. A series of determinations are tabulated for a variety of head-neck lengths and angulation changes. When a cuneiform osteotomy is being done, the effect of the wedge can be determined and should be considered. Also to be considered are a tendency for spontaneous correction and growth stimulation from the osteotomy.

Adolescent↗
PubMed1983

Accidental drill bit scoring of a total hip arthroplasty femoral component with subsequent fatigue fracture.

In the case of a 59-year-old man, failure of a total hip arthroplasty was associated with a latent fatigue fracture of the femoral component. The fatigue fracture was initiated by a drill bit score that created a significant stress concentration in the midlateral section of the femoral implant. The score occurred when wiring was used to reattach the greater trochanter after the femoral component was cemented. In any procedure requiring reattachment of the greater trochanter in the presence of an already cemented femoral component, the wiring should be extramedullary.

Biomechanical Phenomena↗
PubMed1982

The treatment of unstable intertrochanteric fractures using a sliding screw-medial displacement technique.

A consecutive series of 61 unstable intertrochanteric fractures internally stabilized with a compression hip screw utilizing a medial displacement technique at a teaching institution is reviewed. Of the 50 fractures with adequate followup, osseous union occurred in 48. There were two cases of mechanical failure and two deep wound infections. Average limb shortening was 1.8 cm. The 6-week mortality rate was 6%. This experience suggests that this approach carries a low incidence of mechanical failure, acceptable morbidity and mortality rates, and no excessive shortening.

Adult↗
PubMed1982

Storage of an autogenous cortical bone graft in a subcutaneous pouch with subsequent transplantation.

A 31-year-old motorcyclist presented with an open contaminated comminuted fracture of the shaft of the femur. The extruded diaphyseal segments were stored in a subcutaneous pouch in the thigh and subsequently replaced in the fracture site as a composite graft with iliac bone. The interval of in vito storage provided time for evaluation of infection and apparently allowed the bone to possess a limited degree of viability and function as a fresh autogenous graft.

Adult↗
PubMed1982

Angulation osteotomy. A trigonometric analysis.

An analysis of an angular deformity of a long bone and a corrective osteotomy is presented to demonstrate that the effective length of a long bone is significantly shortened by an angular deformity, and that this amount of shortening can be easily calculated. A comparison of proximal versus distal sites for corrective osteotomy is made to demonstrate that a proximal site is generally advantageous. A method of precisely calculating the length of the base of the appropriate corrective wedge is defined. It is shown that a closing wedge osteotomy can result in a significant increase in the effective length of an angulated bone.

Child↗