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Biomedical subjects

C Chambers

Publications and source records attributed to C Chambers.

62 records · Page 4Linked to original sources
PubMedDate not supplied

Adductor transfers in cerebral palsy: long-term results studied by gait analysis.

Thirty-three ambulatory patients with spastic cerebral palsy underwent evaluation and gait analysis an average of 9.6 years after bilateral posterior adductor transfers to the ischium. All patients showed functional improvement postoperatively, which was maintained at long-term follow-up in 94%. Gait analysis, however, documented pelvic obliquity in 85% of this group of patients. Associated with pelvic obliquity was a 36% incidence of unilateral hip subluxation. These complications of posterior adductor transfers have been difficult to treat and have resulted in the abandonment of this procedure at our institution.

Cerebral Palsy↗
PubMedDate not supplied

Vulpius and Z-lengthening.

An evaluation of ankle function in gait after 22 Vulpius lengthenings of the gastrocnemius fascia and 27 Z-lengthenings of the Achilles tendon was performed in 33 ambulatory cerebral palsy patients. Simultaneous hip or knee surgeries or both were performed in most instances. Gait analysis including ankle motion, moment, and power data was obtained before surgery and approximately 1 year after. The ankle moments were improved and approached normal in the majority of cases in each group. There were no significant differences between the Vulpius and Z-lengthening groups at follow-up in any of the parameters. There were significant differences between the initial and follow-up measurements of each group. The Vulpius group showed a notable presence of abnormal midstance work initially and had a significant decrease at follow-up. The Z-lengthening group showed a notable presence of equinus and a notable lack of push-off work initially and had a significant decrease in equinus and a significant increase in push-off work at follow-up. Each procedure appears to give satisfactory results because the follow-up results were similar.

Achilles Tendon↗
PubMedDate not supplied

Knee motion following multiple soft-tissue releases in ambulatory patients with cerebral palsy.

Multiple soft-tissue releases (MSTRs) in cerebral palsy have been advocated to improve knee motion during gait. Forty-five extremities underwent MSTRs as recommended by preoperative gait analysis. Pre- and postoperative analyses were evaluated in relation to knee motion and foot progression angle. Maximum knee flexion during swing and the foot progression angle showed no significant change postoperatively. The total knee ROM and minimum knee flexion in stance improved significantly towards normal. The timing of maximum knee flexion and slope of the knee flexion curve at toe off improved with respect to age and number of previous surgeries. MSTRs increased knee ROM and improved the sequential timing and event progression during gait.

Adolescent↗
PubMedDate not supplied

A comparison of different methods for assessing the 'intensity' of tinnitus.

Questions are raised about the technical and psychological interpretation of loudness match measures in the assessment of tinnitus "intensity". The effect of hearing threshold on loudness matches expressed in sensation level (SL) was investigated by selecting subjects with different degrees of hearing loss. The loudness match expressed in SL was found to be a function of threshold. Correlations were then determined between psychological scales of tinnitus complaint (reported loudness, distress, intrusiveness, and others) and loudness match expressed in HL, SL, sones, or personal loudness units (PLUs). Only matches expressed in PLUs were significantly correlated with reported loudness or other psychological scales. The PLU transformation, derived from an individually determined loudness function, produces values that are generally independent of other audiometric measures. It is therefore recommended for assessing tinnitus "intensity".

Adolescent↗
PubMedDate not supplied

Physicians' responses to diagnostic test guidelines.

Internists (IM), subspecialty internists (SS), and family practitioners (FP) were surveyed regarding their opinions of ten of the Blue Cross Blue Shield Association/American College of Physicians diagnostic test use guidelines applied to the asymptomatic periodic health exam. The majority of 390 respondents agreed with the guidelines (59% of all responses). There was at least 40% disagreement with seven of ten guidelines. Board certification was associated with agreement. Internists and family practitioners were more likely to agree than subspecialty internists. The number of years in practice had a negative correlation with agreement for five guidelines. HMO physicians tended to agree with guidelines that discouraged test ordering. Results indicate that these guidelines for test use, based on research data and developed cooperatively by physicians, are a starting point for guidelines to testing during the periodic health examination.

Attitude of Health Personnel↗