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A comparative study of variable angle volar plate and bridging external fixator with K-wire augmentation in comminuted distal radius fractures

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Chinese Journal of Traumatology 2021年第5期24卷 301-305页

作者： ratish kumar mishra Bhagwati Prasad Sharma Amit kumar Rohit Sherawat Orthopedic Department Sir Gangaram HospitalNew Delhi 11006India Central Institute of Orthopedics Vardhman Mahavir Medical College and Safdarjung HospitalNew Delhi 110029India Orthopedic Department All India Institute of Medical SciencesRae Bareli 229405India Central Institute of Orthopaedics Vardhman Mahavir Medical College and Safdarjung HospitalNew Delhi 110029India

Purpose:Comminuted intraarticular distal radial fractures are difficult to treat conservatively and require operative treatment.This study compared the functional outcomes between variable angle volar plating and external fixator with K-wire augmentation in open reduction and internal fixation.Methods:A total of 62 adult patients with comminuted intraarticular distal radius fracture were randomized into 2 groups:volar plate group and external fixator group.These patients aged between 18 and 60 years had unilateral fractures,and agreed to be included in the study.Patients with a history of fracture,bilateral fracture,associated other injuries,delayed injury for more than 2 weeks,open fracture,pre-existing arthrosis or disability,psychiatric illness and pathological fracture were excluded.Patients were followed up at 6 weeks,3 months,6 months and 1 year.The assessment of pain,functional activity,range of motion and grip strength was done at each stage of follow-up.The pain and functional activities were assessed by patient rated wrist evaluation(PRWE)score and disabilities of the arm,shoulder and hand(DASH)score.Results:Patients in volar plate group had superior PRWE score and DASH score at each stage of followup.At 1 year follow-up,the mean PRWE score were 7.48 for volar plate group and 7.35 for external fixator group;while the mean DASH score was 4.65 for volar plate group and 5.61 for external fixator group.They had better flexion and extension range of movement.They also had better pronation and supination range of motion at initial follow-up,however the difference get attenuated by 1 year.Volar plate group had significantly better grip strength than external fixator group.Complication rates were higher in external fixation group.Conclusion:Fixation with variable angle volar plate results in early wrist mobilization,better range of movement,less pain and disability and early return of function.

关键词： Comminuted Distal radius fracture Intraarticular Volar plate External fixator

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Treatment of Posterior Malleolus Fracture through Posterolateral Approach

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Open Journal of Orthopedics 2019年第4期9卷 67-80页

作者： Sah Ganesh kumar Jun Lu Singh ratish Sinkemani Arjun Karki Sundar Jiming Liang Department of Orthopedic Surgery Zhongda Hospital Affiliated to Southeast University Nanjing China

Posterior malleolus fractures are quite common and usually result from rotational ankle injuries. For the management of posterior malleolus fractures, more studies are still required, though it is already well-recognized for medial and lateral structure. Therefore, fracture of posterior malleolus is striking subject of study among orthopedic surgeons. Most orthopedic surgeons recommend fixing the posterior malleolus fracture if it is larger than 25% to 33% of the distal articular surface. Further attention is required for the reduction and fixation of fractures involving posterior malleolus. Several approaches and methods for fixation of posterior malleolus have been defined in the literature. Previously, the most common method of fixation of the posterior malleolus is by indirect reduction and antero-posterior screws, it is minimally invasive, the anterior incision does not allow satisfactory visualization of the fragment, so good anatomical reduction is difficult to achieve thorough this approach. Operative management goals to reach a stable ankle with maximal function, decrease the risk of post-traumatic degenerative changes, and diminish the risk of complication. Nowadays, posterolateral approach is gaining the popularity due to adequate visualization and accurate anatomic reduction.

关键词： Ankle Fracture Posterior Malleolus Fracture Trimalleolus Fracture Posterolateral Approach

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Comparative H2S Sensing Characteristics of Fe2O3: Thin Film vs. Bulk

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Soft Nanoscience Letters 2013年第4期3卷 6-8页

作者： Vishal Balouria Ajay Singh Niranjan Suryakant Ramgir Anil Krishan Debnath Aman Mahajan ratish kumar Bedi Dinesh kumar Aswal Shiv kumar Gupta Material Science Laboratory Department of Physics Guru Nanak Dev University Amritsar India. Technical Physics Division Bhabha Atomic Research Center Mumbai India Technical Physics Division Bhabha Atomic Research Center Mumbai India

Comparative investigations of gas sensing characteristics of Fe2O3 in both thin film as well as bulk forms have been performed. Thin film sensors were realized by first depositing Fe films using electron-beam evaporation followed by thermal oxidation. Bulk sensors in the form of pellets were prepared by cold pressing commercial Fe2O3 powder with subsequent sintering. Both thin film and bulk Fe2O3 sensors exhibited a selective and reversible response characteristics towards H2S with maximum response at an operating temperature of 250°C and 200°C, respectively. A negligible response towards other interfering gases was observed. Thin film sensors exhibited an enhanced response in comparison to that of pellets.

关键词： Fe2O3 Thin Film Pellets H2S Sensor

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