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Mean limb length discrepancy after total hip arthroplasty.

Adnan Rasheed1, Muhammad Kaleem Shaukat1, Farhad Alam1

  • 1Orthopaedics Department, University Medical and Dental College, Madinah Teaching Hospital, Faisalabad, Pakistan.

Journal of Ayub Medical College, Abbottabad : JAMC
|March 23, 2021
PubMed
Summary

Limb length discrepancy (LLD) after total hip arthroplasty (THA) is common, but usually minimal. Most patients have LLD within 10mm, though some may require shoe adjustments for significant differences.

Keywords:
Limb length discrepancy (LLD); Total Hip arthroplasty (THA)Preoperative LLD, Postoperative LLD; Age and gender distribution of THA

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Patient Outcomes Research

Background:

  • Limb length discrepancy (LLD) is a frequent complication of total hip arthroplasty (THA), leading to patient dissatisfaction.
  • Limited literature exists on LLD following THA in Pakistan.
  • Addressing LLD is crucial for improving patient outcomes and satisfaction after THA.

Purpose of the Study:

  • To determine the mean preoperative and postoperative LLD in patients undergoing primary THA.
  • To analyze the difference between preoperative and postoperative LLD.
  • To provide data that can inform preoperative planning and surgical execution to minimize LLD.

Main Methods:

  • A descriptive case series study involving 44 patients undergoing primary THA.
  • Data collected from September 2018 to September 2019 at Madinah Teaching Hospital, Faisalabad.
  • Patients aged 18-70 years were included, using non-probability consecutive sampling.

Main Results:

  • The mean preoperative LLD was -19.02 mm (SD 21.31).
  • The mean postoperative LLD was 7.25 mm (SD 9.46).
  • 91% of patients had postoperative LLD, with 88.6% within ±10 mm, while 11.4% had LLD >10 mm causing functional impairment.

Conclusions:

  • Postoperative LLD after primary THA is typically minimal and within acceptable limits in experienced surgeons' hands.
  • A small percentage of patients may experience significant LLD, potentially requiring compensatory measures like shoe wear.
  • The findings underscore the importance of meticulous surgical technique and preoperative planning to manage LLD.