MRI study of bioabsorbable poly-L-lactic acid devices used for fixation of fracture and osteotomies.

BACKGROUND: The overall clinical results of bioabsorbable fixation devices made of poly-L-lactic acid (PLLA) used for fixation of fractures, bone grafting, and osteotomies have been favorable. However, clinical studies demonstrated no sign of normal bony architecture restored after surgery, although implant channels had been filled with fibrous tissue. The purpose of the present retrospective study was to examine the extent of structural changes in PLLA devices (PLLA-Ds) for fixation of rotational acetabular osteotomies and displaced malleolar ankle fractures using magnetic resonance imaging (MRI). METHODS: Altogether, 14 patients with osteoarthritis of hip joints and 15 with displaced malleolar ankle fractures were operated on using PLLA-D (NEOFIX). Of these patients, 22 were finally enrolled in the study, and the period from operation to the time of the study ranged from 17 to 78 months. The postoperative radiographic findings were evaluated for union, and changes around the implant holes were classified as sclerosis, resorption, or no change. MRI was carried out to estimate changes in the PLLA-Ds. RESULTS: Bone union was obtained in all cases; clinical complications such as infection, joint effusion, soft tissue irritation due to PLLA-D deviation, and motion pain in the joints were not observed. The MRI study suggested that water content in PLLA-D increased mainly due to biodegradation and that implants were not replaced by bony tissue. CONCLUSIONS: The PLLA-Ds were degraded but were not replaced by bony tissue during the observation period. Considering these findings and the assumption that in bony tissues mechanical strength of PLLA-D decreases with time, attention should be paid to mechanical insufficiency, which may occur when the cross-sectional area of a PLLA-D extends beyond the cross-sectional area of the osteosynthesis site.

[Ways to make cooperation between hospital nurse and home visiting nurse in treating a final stage cancer patient at home].

Due to a payment system based on Comprehensive Medical Evaluation has been adopted, both a shorter hospitalization and the use of home nursing care have been increasing. A good cooperation between hospital and home visiting nurses is desired in order to transfer continued nursing. Regarding a home nursing care service for the most terminal cancer patients, we conducted a survey of 459 home visiting nurses with twelve questions in five categories: (1) Before transferring to home care, (2) Right after the transfer to home care, (3) Patient in a stable period, (4) Time of near death and (5) Other (Requests to hospital nurses). The following issues became clearer in terms of how hospital and home visiting nurses should be cooperating with the handling of last stage terminal cancer patients: (1) A home visiting nurse should have a coordinating role with a hospital nurse when the patient is discharged from the hospital. (2) A participation of home visiting nurses on the coordination guidance at the time of a patient discharge is influenced by a manpower of the nursing station. (3) Even though home visiting nurses found a discrepancy between the hospital information and what patients and their families were getting from the hospital, home visiting nurses have learned through the job to clarify what patient and family needs were, and they responded accordingly. (4) A coordination between hospital and home visiting nurses was needed quite often when the patient's time has come to die at home.

[Questionnaire survey for doctors in the area of cooporation efforts when a terminal cancer is transformed to home medical care].

In order to smoothly transform a terminal cancer patient from hospital to home medical care, we surveyed based on questionnaires to examine doctor's roles of each primary and regional hospitals and its cooperation among the hospitals. We established two types of questionnaires for two groups, a primary doctor group and a regional doctor group, and distributed and collected them. A total of 123 doctors (35 primary doctors and 88 regional doctors) responded out of 185 doctors, and the collection rate was 66.5%. The survey result indicated that there were significant differences among the primary and regional doctors in evaluating patient's family members for understanding of the patients disease at the time of discharge, how to give a treatment to the patient, alleviating patient's disease conditions and a mental support given by doctor to family members from the hospital. Meanwhile, about 70% of regional doctors answered that family members had some sort of anxieties during a night and at the time of emergency to care the patient. It also revealed that about 70% of regional doctors had experienced troubles in coordinating with a primary hospital. On the other hand, 62% of primary doctors answered that they always provided necessary care to the patient at the time of emergency. In providing a safe and a high degree of QOL in home medical care settings, it is important to have specific common purposes among the two groups of doctors and patients. Furthermore, the primary and regional doctors have to be cooperative, specify duty roles when the patient is transformed to home medical care, and to have ways to accomplish mutual common goals for patients.