[Patellar fractures. Modified tension band osteosynthesis]

Area of Science:

• Orthopedic Surgery
• Trauma Management

Background:

• Patellar fractures are common injuries requiring effective surgical stabilization.
• Assessing the efficacy of modified tension band osteosynthesis for patellar fractures is important for clinical practice.

Purpose of the Study:

• To evaluate the retention capability and functional outcomes of modified tension band osteosynthesis in reduced patellar fractures.
• To analyze complications and long-term results associated with this surgical technique.

Main Methods:

• Retrospective analysis of 45 patients with reduced patellar fractures treated with modified tension band osteosynthesis.
• Postoperative immobilization duration varied (0-56 days).
• Clinical follow-up conducted 18-80 months post-injury.

Main Results:

• Nine fractures showed postoperative displacement (>2-3 mm), with four experiencing secondary dislocation.
• Four cases of surgical site infection occurred (superficial wound infections, fistula, pyarthron).
• At follow-up, 7/29 patients without concomitant injuries were symptom-free, and 13 were pain-free; 17 had good knee mobility and minimal quadriceps atrophy.

Conclusions:

• Modified tension band osteosynthesis is effective for retaining reduced transverse and comminuted patellar fractures.
• Plaster immobilization may not be necessary for all cases.
• Dislocated patellar fractures require meticulous treatment due to their severity.