The BHU bicentric bipolar prosthesis in fracture neck femur in active elderly

Kumar, Anil; Agarwal, Rakesh; Singh, Saurabh; Ratan, Ratnav

doi:10.1186/1752-2897-2-7

Cited by 11 publications

(17 citation statements)

References 20 publications

(15 reference statements)

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“…Thus, reduces wear and debris forma on 17,18 at extremes of the movement. The neck of the prosthesis has been made trapezoidal like the Charnley type neck and the cup has been modified in a staggering fashion to decrease neck cup impingement.…”

Section: Range-of-motion Scalementioning

confidence: 99%

“…Modifica on of sea ng angle between the stem and the collar has allowed preserva on of the calcar by quarter to 1 cm a er implanta on of the prosthesis. Due to low sea ng angle in conven onal bipolar (Bateman type), the calcar has to be sacrificed during the surgery and hence on weight bearing the prosthesis tends 17,18 to sink if cement is not used.…”

Section: Range-of-motion Scalementioning

confidence: 99%

“…Pa ents based self-assessment was done by modified Harris hip score ques onnaire at each follow up ( We propose changes in the design of BHU bicentric bipolar prosthesis as men oned by Rai et al for the prolonged preserva on of movement at inter-prosthe c joint, and good to excellent modified Harris hip score in majority of 17,18 pa ents in this series. Modifica on of sea ng angle between the stem and the collar has allowed preserva on of the calcar by quarter to 1 cm a er implanta on of the prosthesis.…”

Section: Range-of-motion Scalementioning

confidence: 99%

“…UHMWPE wear in a bipolar prosthesis is 0.7 mm/year. A 22 mm Charnley head diameter has been used in the BHU bicentric bipolar prosthesis, so that thicker UHMWPE can be provided in outer bearing, thereby increasing the survivorship of the 17,18 prosthesis.…”

Section: Range-of-motion Scalementioning

confidence: 99%

“…BHU bicentric bipolar prosthesis is available in 37-55 mm head sizes in 1 mm increments, which provides appropriate head size for replacement and subsequently prevents early failure of the prosthesis, by avoiding Hertzian contact 17,18 stress.…”

Section: Range-of-motion Scalementioning

confidence: 99%

See 4 more Smart Citations

Bicentric Bipolar Prosthesis in Non-Traumatic Hip Pathologies: Maximum 10 Years Follow Up

Jha

Kumar

Shakya

2018

Birat J. Health Sci.

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Introduction: Introduction of bipolar prosthesis was basically made for the treatment of fresh fracture neck of femur in elderly, but with advancement in design and techniques its use has been increased to various non-traumatic hip pathologies.Objective: To assess clinical and radiological outcome of BHU bicentric bipolar hip prosthesis in treatment of non-traumatic hip pathology.Methodology: This longitudinal study was done in 30 cases of various hip conditions, during the period of March 2002 to March 2012. All patients had secondary osteoarthritis of hip with abnormal acetabulum following advanced tubercular arthritis, rheumatoid arthritis, ankylosing spondylitis and avascular necrosis of femoral head. Primary bipolar hemi-replacement arthroplasty was done in all the cases using Banaras Hindu University (BHU) bicentric bipolar hip prosthesis. Each patient was assessed radiologically for movement and fraction of it occurring at various components of prosthesis and clinically for functional outcome using modified Harris hip score for the maximum of 10 years.Results: There were 17 males and 13 females (n=30), aged between 31-60 years. Three and half years following surgery, (n=12) 100% patients were able to squat and sit crossed legged. At four and half years follow-up, (n=7) 100% patient had excellent result when assessed by modified Harris hip score. Radiologically, by the end of 10 years (n=1) all the movements of hip occurred at inner bearing while the outer bearing was fixed to acetabulum.Conclusion: This intermediate term follow-up study suggests that the use of BHU bicentric bipolar hip prosthesis for bipolar hemireplacement is associated with be

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Section: Range-of-motion Scalementioning

confidence: 99%

Section: Range-of-motion Scalementioning

confidence: 99%

Section: Range-of-motion Scalementioning

confidence: 99%

Section: Range-of-motion Scalementioning

confidence: 99%

Section: Range-of-motion Scalementioning

confidence: 99%

See 3 more Smart Citations

Bicentric Bipolar Prosthesis in Non-Traumatic Hip Pathologies: Maximum 10 Years Follow Up

Jha

Kumar

Shakya

2018

Birat J. Health Sci.

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Psychometric Assessment of Modified Harris Hip Score for Femoral Neck Fracture in Indian Population

Vishwanathan

Pathan

Makadia

et al. 2020

IJOO

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Analysis of vertical and horizontal offsets in displaced femoral neck fracture in elderly treated with indigenous bicentric bipolar hip device

Kumar

Yadav

Verma

et al. 2021

Journal of Clinical Orthopaedics and Trauma

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Objectives:To analyze the effect of indigenous bicentric bipolar prosthesis on horizontal and vertical offsets in fracture neck of femur when compared to contralateral normal hip and to evaluate functional outcomes. We hypothesized that our non-modular bipolar device restores satisfactory offsets in such patients. Methods: All active elderly patients with displaced fracture NOF having contralateral normal hip were included. We used an indigenous bicentric bipolar hip-prosthesis, which is a non-modular single-piece device in all cases by lateral Hardinge approach. Postoperative radiograph AP view was taken in 15 internal rotation to decrease the effect of limb rotation on offset. CT scan was also used to evaluate offsets using ADW4.6 ADVANCED GE optima 128 slice software system. Subjects were followed for a minimum of 12 months postoperatively and functional outcome of effect of offsets change were evaluated by modified Harris Hip Score. Results: There is minimal difference in horizontal and vertical offset after bicentric bipolar hemireplacement which is statistically insignificant supporting our hypothesis. The clinical outcomes were good to fair according to modified Harris Hip Score. The mean value of horizontal offset after our bipolar hemireplacement was 42.4 ± 2.04 mm and of normal hip was 41.8 ± 1.81 mm and P-value¼0.08 in plain radiographs and value of horizontal offset in CT scan was 40.73 ± 0.27on bipolar side and 41.19 ± 0.77 on normal side. Vertical offset after bicentric bipolar was 32.67 ± 2.85 mm and vertical offset of normal hip was 32.53 ± 2.73 mm. Mean 9.77 ± 1.09 mm of calcar was preserved. Modified Harris Hip Score at 6 and 12 months postoperatively was 75.78 ± 4.16 and 79.53 ± 3.95 respectively. There was no incidence of hip dislocation. Conclusion:Our study data clearly demonstrates that vertical and horizontal offsets are effectively maintained by the indigenous bicentric hip device. There was insignificant change in offsets as compared to contralateral normal side due to its design modifications. Indigenous bicentric non-modular bipolar device offers an excellent option for femur neck fractures in elderly patients in resource constrained situations. It allows rapid rehabilitation due to reduced surgical time, minimal blood loss and early return to function and activities of daily living.

show abstract

The BHU bicentric bipolar prosthesis in fracture neck femur in active elderly

Cited by 11 publications

References 20 publications

Bicentric Bipolar Prosthesis in Non-Traumatic Hip Pathologies: Maximum 10 Years Follow Up

Bicentric Bipolar Prosthesis in Non-Traumatic Hip Pathologies: Maximum 10 Years Follow Up

Psychometric Assessment of Modified Harris Hip Score for Femoral Neck Fracture in Indian Population

Analysis of vertical and horizontal offsets in displaced femoral neck fracture in elderly treated with indigenous bicentric bipolar hip device

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