PubMed Health⌕ Search

Biomedical subjects

R L Cruess

Publications and source records attributed to R L Cruess.

At least 55 records · Page 3Linked to original sources
PubMed1978

The management of the foot and ankle in arthrogryposis multiplex congenita.

Sixty-six deformities of the foot and ankle in forty-two patients with arthrogryposis multiplex congenita were reviewd. Pes equinovarus proved particularly difficult to treat as there was a tendency for the deformity to recur because of the thick and rigid capsule. Intracapsular procedures were more successful than those done adjacent to the joint. Wide capsulotomy or talectomy were the best procedures under the age of three years and triple arthordesis was most successful for the older child.

Ankle↗
PubMed1977

Classification of degenerative arthritis.

It is suggested that the former division of degenerative arthritis into idiopathic types and those secondary to some disease process is no longer valid. Recent studies have indicated that abnormal concentrations of force on cartilage lead to the development of this disease. A classification is presented that is based on the assumption that the process is initiated by abnormal concentrations of force on normal cartilage matrix, normal concentrations of force on abnormal cartilage matrix or normal concentrations of force on normal cartilage matrix that is supported by bone of abnormal consistency.

Arthritis↗
PubMed1977

The surgical correction of congenital elevation of the scapula. A review of seventy-seven cases.

Of 77 cases of surgically treated congenital high scapula, the procedure was scapular resection in 36, and scapula relocation in 41. Seventeen had a Woodward-type repair, 14 a Shrock procedure, four cases a Green repair and 6 cases had Petries modification of the Green repair. Follow-up was from two to 14 years with a mean of 11 years. Preoperatively, the mean of shoulder abduction was 90 degrees. Post-operatively, proximal resection increased shoulder abduction to 126 degrees but did not change scapular position. Scapular relocation increased abduction to a mean of 134 degrees and shoulder position was altered from a mean of 1.8 inches of elevation as compared to the normal side, to a mean of 0.5 inches of residual elevation. Significant loss of initial correction occurred in 14 out of 36 cases of proximal resection and 9 of 41 patients with scapular relocation.

Child↗
PubMed1976

Effect of estrogen on the collagenolytic activity of rat bone.

Rats were injected with 17 beta-estradiol benzoate intramuscularly and the collagenolytic activity of the rat bones was assayed by measuring the degradation of purified reconstituted 3H-proline- and 3H-hydroxyproline-labeled collagen. A diminution of the collagenolytic activity which could be recovered from the culture medium of estrogen-treated rat bone was observed. However, the addition of estrogen to the enzyme using the same assay revealed no diminution of collagenolytic activity. These results suggest that the diminution of collagenolytic activity in the culture medium of estrogen-treated rat bone is due to an alteration in the production or activation of collagenolytic activity.

Animals↗
PubMed1976

Steroid-induced avascular necrosis of the head of the humerus. Natural history and management.

Ninety-five patients with steroid-induced avascular necrosis of bone have been personally treated by the author. Of these, eighteen had a lesion of the head of the humerus, on one or both sides. The conditions for which the steroids were given included post-transplantation, lupus erythematosus, glomerulonephritis and asthma. The characteristic lesion began as a subchondral osteolytic area which frequently progressed to collapse. The articular cartilage divided from the subchondral bone, either becoming detached as a free cap or at a later stage reattaching. In some cases the lesion was minimal and the symptoms were slight. Conservative treatment has consisted of pendulum exercises and avoidance of abduction, particularly against resistance. In fourteen patients this led to satisfactory function with only intermittent symptoms. Four patients required replacement of five humeral heads with Neer's prostheses. After one to seven years the results of all five were classified as excellent in terms of absence of symptoms and a free range of movement.

Adolescent↗
PubMed1975

Fracture healing.

The sequence of events occurring after fracture is now relatively well understood. Healing takes place in three phases--inflammatory, reparative and remodelling. In each phase certain cells predominate and specific histologic and biochemical events are characteristic. Factors that influence fracture healing are both local and systemic; the former include particularly the degree of local trauma and bone loss, the type of bone affected, the degree of immobilization and local pathologic conditions; the latter include age, hormones, local stress and electric currents. Natural processes of healing should be allowed to take their usual course and interference should be attempted only when there is demonstrable need or substantial advantages for the patient.

Bone and Bones↗