The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform

T. Ohta - One of the best experts on this subject based on the ideXlab platform.

  • one year change in the Second Metacarpal Bone mass associated with menopause nutrition and physical activity
    Journal of Nutrition Health & Aging, 2009
    Co-Authors: K. Yasaku, N. Koitaya, K. Yoshimoto, Kazuko Ishikawatakata, T. Ohta
    Abstract:

    Objectives To clarify the annual changes and effects of nutrition and physical activity on Bone mass at the Second Metacarpal using computed X-ray densitometry.

  • One-year change in the Second Metacarpal Bone mass associated with menopause nutrition and physical activity
    JNHA - The Journal of Nutrition Health and Aging, 2009
    Co-Authors: K. Yasaku, K. Ishikawa-takata, N. Koitaya, K. Yoshimoto, T. Ohta
    Abstract:

    Objectives To clarify the annual changes and effects of nutrition and physical activity on Bone mass at the Second Metacarpal using computed X-ray densitometry. Design Population-based prospective follow-up study. Measurements Bone mass measurements and assessments of nutritional intake, exercise habits, and health status were conducted twice with a one-year interval. Participant 269 Japanese women aged 40 — to −80 — years old. Results The annual change rate among subjects who started menopause during the observation period was −4.2±4.9%. Bone mass subsequently continued to decrease 3% annually until 6 years after menopause. Subjects who consumed high levels of milk or calcium in the first year showed no substantial decrease in Bone mass among the post-menopausal subjects. Premenopausal subjects who began or continued exercise evidenced increased Bone mass, and peri-menopausal subjects who continued exercise or a high level of daily physical activity showed inhibited Bone loss. Conclusion Second Metacarpal Bone changed by menopause, nutrition and physical activity similar with other Bone site presented in the previous studies.

H Hoflehner - One of the best experts on this subject based on the ideXlab platform.

  • the vascular blood supply of the Second Metacarpal Bone anatomic basis for a new vascularized Bone graft in hand surgery
    Surgical and Radiologic Anatomy, 1992
    Co-Authors: G Pierer, J Steffen, H Hoflehner
    Abstract:

    After traumatic loss of the index finger the Second Metacarpal Bone is often used as a free graft to reconstruct bony defects of the thumb. Since clinical experience has shown numerous advantages of using a blood supplied Bone graft, an anatomical study was performed in 104 cadaveric hands to investigate the vascularization supply of this Bone. After dye injections into the arterial system the vascular situation of the Second Metacarpal was studied and a classification was made. Six variations in arterial vascularization were found. The nutrient vessels to the Bone originate from the radial artery or from the deep palmar arch and correspond to variable Metacarpal arteries. Selective injection studies via the respective pedicles showed sufficient perfusion and complete dye distribution in the Bone. Further dissections could demonstrate the feasibility of raising a pedicled Bone graft only partially with preservation of the index finger. The Second Metacarpal as a vascularized graft may be harvested entirely in serious injuries with destruction of the index finger in emergency cases of skeletal thumb reconstruction or partially as an elective procedure. All type have a useful are of rotation and their pedicles allow transpositions within the radial side of the hand, especially for applications in the thumb and carpus. The clinical application of these procedures could be shown in five cases. The results of this study therefore provide the anatomical basis for transposition or free microvascular transplantation of the Second Metacarpal as a vascularized Bone graft for a variety of indications in hand surgery.

  • The vascular blood supply of the Second Metacarpal Bone: anatomic basis for a new vascularized Bone graft in hand surgery
    Surgical and Radiologic Anatomy, 1992
    Co-Authors: G Pierer, J Steffen, H Hoflehner
    Abstract:

    Après une perte de substance osseuse post traumatique du pouce associée à une perte de l'index, un greffon osseux vascularisé est souvent utilisé pour reconstruire le pouce à partir du deuxième métacarpien. Un transfer osseux présente des avantages quand il est vascularisé. Pour cette raison les auteurs ont étudié, sur 104 mains prelevées sur des cadavres, les bases anatomiques et les possibilités d'une transposition du métacarpe II avec un pédicule vasculaire. Après l'injection intraartérielle, la vascularisation du 2eme métacarpien II a été étudiée et une classification a été faite. Les auteurs ont trouvé six variantes différentes. Les artères nourricières proviennent de l'a. radiale ou de l'arcade palmaire profonde et forment les aa. métacarpiennes de situation variable. Des injections sélectives avec bleu de méthylène dans les artères ont prouvé les bonnes conditions de perfusion avec une diffusion du la substance colorante dans l'os entier. La longueur des pédicules vasculaires permet une rotation correcte de ce transfert osseux sur le versant radial de la main dans chaque variante, plus particulièrement dans le cas des applications au pouce et à la racine de main. Les résultats de ces recherches constituent la base anatomique pour une nouvelle méthode reconstructive dans la chirurgie de la main. After traumatic loss of the index finger the Second Metacarpal Bone is often used as a free graft to reconstruct bony defects of the thumb. Since clinical experience has shown numerous advantages of using a blood supplied Bone graft, an anatomical study was performed in 104 cadaveric hands to investigate the vascularization supply of this Bone. After dye injections into the arterial system the vascular situation of the Second Metacarpal was studied and a classification was made. Six variations in arterial vascularization were found. The nutrient vessels to the Bone originate from the radial artery or from the deep palmar arch and correspond to variable Metacarpal arteries. Selective injection studies via the respective pedicles showed sufficient perfusion and complete dye distribution in the Bone. Further dissections could demonstrate the feasibility of raising a pedicled Bone graft only partially with preservation of the index finger. The Second Metacarpal as a vascularized graft may be harvested entirely in serious injuries with destruction of the index finger in emergency cases of skeletal thumb reconstruction or partially as an elective procedure. All type have a useful are of rotation and their pedicles allow transpositions within the radial side of the hand, especially for applications in the thumb and carpus. The clinical application of these procedures could be shown in five cases. The results of this study therefore provide the anatomical basis for transposition or free microvascular transplantation of the Second Metacarpal as a vascularized Bone graft for a variety of indications in hand surgery.

  • the vascular blood supply of the Second Metacarpal Bone anatomic basis for a new vascularized Bone graft in hand surgery an anatomical study in cadavers
    Surgical and Radiologic Anatomy, 1992
    Co-Authors: G Pierer, J Steffen, H Hoflehner
    Abstract:

    : After traumatic loss of the index finger the Second Metacarpal Bone is often used as a free graft to reconstruct bony defects of the thumb. Since clinical experience has shown numerous advantages of using a blood supplied Bone graft, an anatomical study was performed in 104 cadaveric hands to investigate the vascularization supply of this Bone. After dye injections into the arterial system the vascular situation of the Second Metacarpal was studied and a classification was made. Six variations in arterial vascularization were found. The nutrient vessels to the Bone originate from the radial artery or from the deep palmar arch and correspond to variable Metacarpal arteries. Selective injection studies via the respective pedicles showed sufficient perfusion and complete dye distribution in the Bone. Further dissections could demonstrate the feasibility of raising a pedicled Bone graft only partially with preservation of the index finger. The Second Metacarpal as a vascularized graft may be harvested entirely in serious injuries with destruction of the index finger in emergency cases of skeletal thumb reconstruction or partially as an elective procedure. All types have a useful arc of rotation and their pedicles allow transpositions within the radial side of the hand, especially for applications in the thumb and carpus. The clinical application of these procedures could be shown in five cases. The results of this study therefore provide the anatomical basis for transposition or free microvascular transplantation of the Second Metacarpal as a vascularized Bone graft for a variety of indications in hand surgery.

Kohei Inami - One of the best experts on this subject based on the ideXlab platform.

  • vascularized Second Metacarpal Bone graft for the treatment of idiopathic osteonecrosis of the capitate
    Hand, 2020
    Co-Authors: Satoshi Usami, Sanshiro Kawahara, Kohei Inami
    Abstract:

    BACKGROUND: Idiopathic osteonecrosis of the capitate is rare condition with few reports of treatment using vascularized Bone graft. METHODS: A case of a 45-year-old woman with idiopathic necrosis of the capitate who underwent surgical treatment with a vascularized Bone graft from the base of the Second Metacarpal Bone is reported. RESULTS: At 14 months postoperatively, the range of motion of her wrist was maintained, and localized wrist pain was relieved. CONCLUSIONS: This Bone graft, which has a reliable pedicle with few anomalies, offers sufficient cancellous Bone for the capitate, and can be harvested in the same operative field, is desirable for the treatment of osteonecrosis of the capitate.

K. Yasaku - One of the best experts on this subject based on the ideXlab platform.

  • one year change in the Second Metacarpal Bone mass associated with menopause nutrition and physical activity
    Journal of Nutrition Health & Aging, 2009
    Co-Authors: K. Yasaku, N. Koitaya, K. Yoshimoto, Kazuko Ishikawatakata, T. Ohta
    Abstract:

    Objectives To clarify the annual changes and effects of nutrition and physical activity on Bone mass at the Second Metacarpal using computed X-ray densitometry.

  • One-year change in the Second Metacarpal Bone mass associated with menopause nutrition and physical activity
    JNHA - The Journal of Nutrition Health and Aging, 2009
    Co-Authors: K. Yasaku, K. Ishikawa-takata, N. Koitaya, K. Yoshimoto, T. Ohta
    Abstract:

    Objectives To clarify the annual changes and effects of nutrition and physical activity on Bone mass at the Second Metacarpal using computed X-ray densitometry. Design Population-based prospective follow-up study. Measurements Bone mass measurements and assessments of nutritional intake, exercise habits, and health status were conducted twice with a one-year interval. Participant 269 Japanese women aged 40 — to −80 — years old. Results The annual change rate among subjects who started menopause during the observation period was −4.2±4.9%. Bone mass subsequently continued to decrease 3% annually until 6 years after menopause. Subjects who consumed high levels of milk or calcium in the first year showed no substantial decrease in Bone mass among the post-menopausal subjects. Premenopausal subjects who began or continued exercise evidenced increased Bone mass, and peri-menopausal subjects who continued exercise or a high level of daily physical activity showed inhibited Bone loss. Conclusion Second Metacarpal Bone changed by menopause, nutrition and physical activity similar with other Bone site presented in the previous studies.

Tetsuo Inoue - One of the best experts on this subject based on the ideXlab platform.

  • Prevalence of vertebral fractures in a population-based sample in Japan.
    Journal of Bone and Mineral Metabolism, 2001
    Co-Authors: Akira Kitazawa, Kazuhiro Kushida, Kaoru Yamazaki, Tetsuo Inoue
    Abstract:

    In order to compare the prevalence of vertebral fractures in caucasian American and Japanese women, we examined the occurrence of vertebral fractures in a population of 1092 female residents of Yamanashi prefecture who participated in a screening program for osteoporosis. The relationship between vertebral fractures and Bone mineral density (BMD) of the Second Metacarpal Bone was also studied. Our findings regarding the prevalence of vertebral fractures in Yamanashi agreed strongly with the findings of previous reports in Japan. The prevalence of vertebral fractures was equal or lower among women in Japan compared with caucasians in Minnesota aged from 50 to 60 years. A comparison of the fracture and non-fracture groups revealed significant differences in age, height, and Metacarpal BMD. However, after correction for age, no significant difference was found between the two groups.

  • Reduction of Bone mineral density in rheumatoid arthritis: A longitudinal study
    Journal of Bone and Mineral Metabolism, 1997
    Co-Authors: Shigehito Miyamoto, Yasunori Kageyama, Takao Ozeki, Motohiro Suzuki, Tetsuo Inoue
    Abstract:

    In the last decade, more accurate quantitative methods to assess Bone mass in vivo have become available. We have applied these techniques to assess periodic changes of Bone loss in rheumatoid arthritis (RA) patients. In this longitudinal study, 132 female RA patients were divided into two groups. The first group of 90 patients were postmenopausal, with a mean age of 60.2 years (PM group), whereas the Second group of 42 patients were premenopausal, with a mean age of 42.7 years (M group). The clinical courses of these patients were followed for an average of 3 years. Bone mineral density (BMD) in the lumbar spine (L2–L4), and the femoral neck were measured by dual-energy X-ray absorptiometry (DXA), and Second Metacarpal Bone mineral density was measured by using densitometric techniques periodically. Reduction of BMD in the lumbar spine was significant in both groups ( P