Knee joint effusion following ipsilateral hip surgery.
A G Christodoulou1, P Givissis, P D Antonarakos
11st Orthopaeidc Department, General Hospital G Papanikolaou, Exoxi, Thessaloniki, Greece. an.christodoulou@gmail.com
Journal of Orthopaedic Surgery (Hong Kong)
|December 29, 2010
Summary
Hip surgery trauma can lead to patellar reflex inhibition and subsequent knee joint effusion. This study found a positive correlation between these two conditions following various hip surgical procedures.
Area of Science:
- Orthopedic Surgery
- Neuromuscular Physiology
- Biomedical Engineering
Background:
- Hip surgery is a common procedure for fractures and osteoarthritis.
- Post-operative complications can include pain and reduced mobility.
- The relationship between surgical trauma and neuromuscular responses requires further investigation.
Purpose of the Study:
- To investigate the correlation between patellar reflex inhibition and knee joint effusion after hip surgery.
- To analyze the temporal relationship between these two post-operative phenomena.
Main Methods:
- 105 patients (65 women, 40 men; aged 45-75) underwent hip surgery (hip fracture fixation or hip replacement).
- Knee joint effusion, patellar reflex, and thigh circumference were measured pre- and post-operatively (days 0.5-45).
- Time-sequence plots and correlation analyses were employed to assess relationships.
Main Results:
- Patellar reflex inhibition peaked on post-operative day 0.5, preceding knee joint effusion and thigh circumference increase (day 2).
- A significant positive correlation (r=0.843, p=0.035) was observed between patellar reflex inhibition and knee joint effusion.
- This correlation was significant across all three surgical approaches studied.
Conclusions:
- Surgical trauma associated with hip procedures can induce patellar reflex inhibition.
- This reflex inhibition appears to be a precursor to the development of knee joint effusion.
- Understanding this sequence may inform post-operative management strategies.
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