[Application of minimally invasive locking compression plate in treatment of proximal humeral fractures]

T W Law, Frankie K L Leung, Yaogang Lu
Chinese Journal of Reparative and Reconstructive Surgery 2009, 23 (11): 1282-4

OBJECTIVE: To evaluate the clinical and radiological outcomes of minimally invasive plate osteosynthesis (MIPO) with locking compression plate (LCP) in the treatment of proximal humeral shaft fracture.

METHODS: From July 2004 to April 2008, 26 patients with displaced fractures of the proximal humeral shaft were recruited, including 8 males and 18 females. Age of patients averaged 66 years old (range, 34-82 years old). According to AO classification, there were 4 cases of type A1, 2 cases of type A2, 8 cases of type B1, 4 cases of type B2, 2 cases of type B3, 4 cases of type C1 and 2 cases of type C2. The time from injury to surgery averaged 2 days (range, 1-5 days). There were 8 osteoporotic fractures.

RESULTS: All surgical wound healed primarily, and there was no wound infection. Three patients had postoperative radial nerve neurapraxia, which recovered at 4, 6, 8 months respectively. All patients were followed up for 6-24 months with an average of 14.1 months. Radiological examination revealed bony union within 6 months in 25 cases. There was 1 delayed union which remained asymptomatic and eventually healed at 8 months with acceptable Constant-Murley score. There were 3 cases of shoulder impingement syndrome diagnosed at 3 months post-operatively. After implant removal, they all achieved an acceptable Constant-Murley score. According to Constant-Murley scoring system, there were 11 excellent, 10 good and 5 acceptable results. The excellent or good rate was 80.8%.

CONCLUSION: MIPO technique using LCP is an effective method to treat proximal humeral shaft fractures, which facilitates functional recovery of the shoulder joint. During the surgery, it is important to achieve a good fracture reduction and to avoid complications.

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