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Biomedical subjects

A H Green

Publications and source records attributed to A H Green.

14 recordsLinked to original sources

Calcaneal osteotomy for retrocalcaneal exostosis.

In cases in which radiographic and clinical criteria warrant surgical management of Haglund's deformity, calcaneal osteotomy should be considered. Although postoperative recuperation is extended with this procedure as compared with simple exostectomy, the long-term results have proved more successful. Because of the relative technical difficulty in performing the procedure, perioperative planning and anatomic considerations are essential.

Calcaneus

Identifying correlates of reabuse in maltreating parents.

Forty-five abusive parents (40 mothers, 5 fathers) in treatment at a large, urban medical center's child abuse program were compared on 22 parent, child, and treatment variables posited to bear on reabuse. While no one variable by itself was strongly associated with reabuse, the data indicated that interactions involving several variables (e.g., income source, marital status, and the abuser's personal abuse history) significantly differentiated between reabusers and nonreabusers. Implications of the findings for research and clinical intervention are discussed.

Adult

Child maltreatment and its victims. A comparison of physical and sexual abuse.

Although physical and sexual abuse are separate and distinct types of victimization, their impact on children is quite similar. Both of these forms of maltreatment involve the exploitation or misuse of a child by a parent or caretaker in the context of a pathologic family system. Physical and sexual abuse constitute an acute traumatic event for the child, generating phobic responses and anxiety-related symptoms including post-traumatic stress disorder. The long-term traumatic elements stemming from the chronic stigmatization and scapegoating contribute to problems of depression and low self-esteem and distortions in character formation. Betrayal by a primary caretaker leads to mistrust of others and difficulties with object relationships. Perhaps the most striking similarity between physical and sexual abuse of children is the tendency of the children to re-enact and recreate their victimization with others, leading to a transmission of violence in the next generation. Like their parents who were frequently victimized during childhood, they repeat and perpetuate an "aggressor-victim" interaction in their subsequent relationships. Both physical and sexual abuse are embedded in a deviant family structure, which adds to the psychopathology of the children. The contrast between physical and sexual abuse can be demonstrated by their specific impact on aggression and sexuality, respectively. The physically abused child has difficulty in experiencing and modulating aggressive impulses, whereas the victim of incest is often impaired in his ability to experience and integrate sexual feelings. The physically abused child is also at greater risk for cognitive and CNS impairment. Intervention with the abusing parents is the first step in protecting the children from further damage, but treatment of the child victims is necessary not only to diminish their psychopathology and emotional distress, but to prevent the cycle of violence in the next generation.

Adolescent

Biochemistry of protein-isocyanate interactions: a comparison of the effects of aryl vs. alkyl isocyanates.

In addition to their use in the polyurethane and pesticide industries, isocyanates have proven to be useful probes for the exploration of protein structure. This paper focuses on three aspects of isocyanates: their broad reactivity, their reversible interaction with cholinesterases, and the relative hydrolysis rates of alkyl and aryl isocyanates. The broad reactivity of isocyanates as well as the demonstrated affinity labeling of serine and sulfhydryl esterases are discussed. Extension of the affinity labeling studies to include the analysis of the inhibition of cholinesterases by methyl isocyanate shows that methyl isocyanate is not an effective inhibitor of any of the cholinesterases. The inhibition of cholinesterases by alkyl isocyanates shows a pattern of decreased specificity with decreased alkyl chain length. The inhibition of cholinesterases by isocyanates is shown to be reversible, with a maximum rate of reversal seen at physiological pH. This reversal is characteristic of the reaction of an isocyanate with a sulfhydryl group. Finally, the affinity labeling of proteins must compete successfully with the hydrolysis of isocyanates in aqueous solution. The hydrolysis of alkyl isocyanates is shown to be significantly slower than that of the aryl isocyanates.

Affinity Labels

Expanding psychiatry's role in child abuse treatment.

Child abuse, a problem that has plagued societies for centuries, has been largely ignored by psychiatrists, the author asserts. He traces the relatively recent interest in the problem of other medical specialists such as pediatricians and radiologists and maintains that it is time for psychiatrists to become more involved. He explains how problems of confidentiality, the patient's lack of motivation for treatment, and other factors have discouraged many psychiatrists from treating child abusers. He demonstrates ways psychiatrists can treat both the abused child and his family if they are willing to use non-traditional services such as home intervention.

Adult

Self-destructive behavior in battered children.

Fifty-nine physically abused children demonstrated a significantly higher incidence of self-destructive behavior than two control groups of nonabused children, one neglected and one normal. The self-destructive behavior, including suicide attempts and self-mutilation, was potentiated by interrelated variables operating in the abused child and his environment. Often enhanced by the ego deficits and impaired impulse control of the abused children, this behavior seemed to represent a learned pattern originating in early traumatic experiences with hostile primary objects.

Adolescent

Akin osteotomy of the hallux proximal phalanx utilizing Richards mini staple fixation.

The purpose of this manuscript is to describe an effective alternative form of internal fixation after Akin-type osteotomies of the first proximal phalanx, when surgically correcting hallux valgus in patients who exhibit a structural deformity. Intraoperative technique, postoperative management, potential complications, and a review of alternative fixation modalities are described.

Adolescent