The mini-incision mid-vastus approach for total knee arthroplasty

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Rehabilitation Medicine

Background:

• Total knee arthroplasty (TKA) is a common procedure for end-stage knee osteoarthritis.
• Minimally invasive surgical techniques aim to improve patient outcomes and reduce recovery time.
• The mid-vastus approach offers a potential alternative to standard arthrotomy for TKA.

Purpose of the Study:

• To evaluate the efficacy of a mini-incision mid-vastus approach for TKA.
• To compare functional recovery and range of motion with a standard medial parapatellar arthrotomy.
• To assess implant positioning and early signs of loosening.

Main Methods:

• A prospective study involving 74 TKAs using the mini-incision mid-vastus approach.
• A retrospective control group of 57 TKAs using standard medial parapatellar arthrotomy.
• Clinical evaluations of flexion, stair climbing, and radiographic assessments at minimum 1-year follow-up.

Main Results:

• The mid-vastus group demonstrated significantly superior flexion and stair-climbing ability.
• Faster recovery and return to functional activities were observed in the mid-vastus group.
• No complications, implant malalignment, or signs of early loosening were reported in either group.

Conclusions:

• The mini-incision mid-vastus approach facilitates rapid functional recovery and improved range of motion after TKA.
• This technique offers comparable safety and implant positioning to standard arthrotomy.
• It represents a viable option for enhancing patient outcomes in total knee replacement surgery.