Deep venous thrombosis following Charnley arthroplasty

Area of Science:

• Orthopedic Surgery
• Vascular Medicine
• Thrombosis Research

Background:

• Total hip replacement surgery, specifically the Charnley technique, is associated with potential complications.
• Venous thromboembolism is a significant concern following major orthopedic procedures.

Purpose of the Study:

• To investigate the incidence and characteristics of thrombus formation in patients undergoing Charnley total hip replacement.
• To assess the predictive value of preoperative assessments for postoperative thrombosis.
• To explore the etiological factors contributing to thrombus formation in this patient cohort.

Main Methods:

• A venographic investigation was performed on 50 patients undergoing Charnley total hip replacement.
• Data on thrombus formation, timing, location, and distribution were collected.
• Preoperative clinical and venographic assessments were evaluated for predictive accuracy.

Main Results:

• An overall incidence of 54% for thrombus formation was observed.
• Thrombi predominantly formed during the second postoperative week.
• Thrombi were evenly distributed throughout the venous system, with a slight preponderance on the operated side.
• Preoperative assessments showed no value in predicting postoperative thrombus formation.
• Minimal thrombi were found in the "sensitive area," suggesting the surgical technique and acrylic cement heat are not primary causes.

Conclusions:

• The Charnley total hip replacement surgery induces a generalized hypercoagulable state, leading to postoperative thrombus formation.
• The surgical technique and heat from acrylic cement play a minor role in thrombus development.
• Effective prevention strategies should consider the systemic hypercoagulable state.