Short-Term Outcome of Uncemented Modular Bipolar Hemiarthroplasty in Femoral Neck Fractures

Mohmad Nawaz Rather1, Syed Abass Mosvi1, Naseer Ahmad Mir2*, Wajahat Ahmad Mir and Nadeem Ali1

1Department of Orthopedic Surgery, Jammu and Kashmir Orthopedic Association, India
2Department of Orthopedics, Skims Medical College Hospital Srinagar, India

^*Correspondance to: Naseer Ahmad Mir 

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Abstract:

Background: The femoral neck fracture is often described as a fracture of necessity. This fact dictates
that surgical treatment of this fracture is more or less necessary. Approximately 95% to 97% of these
fractures occur in the older adult population. The cause is usually due to a combination of baseline
osteoporosis and minor trauma such as a fall. A femoral neck fracture in adults is complicated by
non-union and osteonecrosis. These complications limit the use of osteosynthesis in femoral neck
fractures in elderly. Modular bipolar hemiarthroplasty eliminates the complications of non-union
and osteonecrosis and thus decreases the need of multiple surgeries.
Methods: After seeking approval from institutional ethical committee the present study was
conducted in Post Graduate Department of Orthopedics of SKIMS Medical College Hospital,
Bemina from October 2018 to February 2020. Thirty patients were taken up for the study. All
patients meeting the criteria of case selection for this study were admitted in our department.
Following admission all patients were operated via posterolateral approach by a single surgeon
using same implant. The outcome was assessed with HIP HARRIS SCORE.
Results: The mean age in our study was 67.63 years (range from 60 to 85). The study group consisted
of 19 females and 11 males. Twenty-nine patients presented with fractures resulting from trivial
trauma during fall while 1 patient had history of high energy trauma due to road traffic accident.
Right and left hip were affected equally contributing 15 cases each. Seventeen patients had Garden
type IV fracture while 13 patients reported Garden type III fracture. The mean femoral head diameter
was 46.3 ranges (41 to 53). The mean femoral stem size was 3.8 ranges (3 to 5). Femoral stem was a
aligned neutrally in 22 patients, valgus in 3 patients and varus in 5 patients. The average period of
follow up was 9.83 months (range 9 to 12 months). The average post-op Harris Hip score was 88.3 at
final follow-up with excellent in 14 patients, good in 12, fair in 2 and poor results in 2 patients. One
patient developed prosthesis dislocation while 1 patient developed prosthesis infection.
Conclusion: Modular bipolar hemiarthroplasty provides early ambulation in adults with displaced
femoral neck fractures while avoid the complications of non-union and osteonecrosis associated
with osteosynthesis and internal fixation.

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Cite the Article:

Rather MN, Mosvi SA, Mir NA, Mir WA, Ali N. Short-Term Outcome of Uncemented Modular Bipolar Hemiarthroplasty in Femoral Neck Fractures. World J Surg Surgical Res. 2021; 4: 1311..