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Related Experiment Video

Updated: Jul 14, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

[Total knee arthroplasty for extension ankylosing deformity].

Hou-shan Lü¹, Hu Li, Zhen-peng Guan

¹Arthritis Clinic and Research Center, Peking University People's Hospital, Beijing 100044, China. lu_houshan@yahoo.com.cn

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]

|June 1, 2007

Summary

Total knee arthroplasty (TKA) for extension ankylosing deformity yields less satisfactory results than for flexion deformities. Careful surgical technique is crucial for successful outcomes in these challenging cases.

Related Concept Videos

Knee Joint

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...

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Area of Science:

Orthopedic Surgery
Biomedical Engineering

Context:

Extension ankylosing deformity presents unique challenges in total knee arthroplasty (TKA).
Limited range of motion (ROM) and joint stiffness necessitate specialized surgical approaches.

Purpose:

To evaluate the outcomes and complications of TKA in patients with extension ankylosing knee deformity.
To identify critical surgical considerations for improving TKA results in this patient group.

Summary:

A study of 8 patients (9 knees) with extension ankylosing deformity undergoing TKA showed postoperative ROM improved to an average of 89 degrees.
Complications included patellar tendon avulsion, patellar fracture, hematoma, and superficial infection. Two knees experienced extension lag, and one required revision due to instability.
Clinical results were less satisfactory compared to TKA for fixed flexion deformities.

Related Experiment Videos

Last Updated: Jul 14, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

Impact:

Highlights the importance of meticulous surgical technique, including joint exposure, bone separation, patellar tendon protection, and soft tissue balancing.
Provides insights into managing complications and optimizing functional outcomes for TKA in challenging extension deformities.
Informs surgical planning and expectations for patients with severe knee stiffness and extension contractures.