Turkish Neurosurgery 2018 , Vol 28 , Num 6
Analysis of the Factors Affecting Surgical Site Infection and Bone Flap Resorption after Cranioplasty with Autologous Cryopreserved Bone: The Importance of Temporalis Muscle Preservation
Sung-Won JIN1,Sang-Dae KIM1, Sung-Kon HA1,Dong-Jun LIM1,Hwa LEE2,Hi-Jin YOU3,
1Korea University, Ansan Hospital, Department of Neurosurgery, Ansan, Gyeonggi-do, Republic of Korea
2Korea University, Ansan Hospital, Department of Ophthalmology, Ansan, Gyeonggi-do, Republic of Korea
3Korea University, Ansan Hospital, Department of Plastic and Reconstructive Surgery, Ansan, Gyeonggi-do, Republic of Korea
DOI : 10.5137/1019-5149.JTN.21333-17.2 AIM: To investigate the outcomes and associated complications after delayed cranioplasty using autologous, cryopreserved bone.

MATERIAL and METHODS: This retrospective study included 57 consecutive patients treated with cranioplasty with autologous cryopreserved bone for various conditions causing increased intracranial pressure due to brain swelling. The incidence and risk factor of surgical site infection (SSI) and bone flap resorption were analyzed.

RESULTS: The SSI rate was 12.3% and the bone flap resorption rate was 24.0%. There were statistically significant differences in SSI rate in relation to time from craniectomy to cranioplasty (p=0.002) and previous temporalis muscle resection (p=0.021). These factors were also independently associated with surgical site infection (time from craniectomy to cranioplasty: OR 0.901, 95% CI 0.826?0.982, p=0.018; previous temporalis muscle resection: OR 11.607, 95% CI 1.155?116.590, p=0.037). There was also a statistically significant difference in the bone flap resorption rate in relation to previous temporalis muscle resection (p=0.001). This factor was associated with bone flap resorption (OR 11.667, 95% CI 2.276?59.798, p=0.003).

CONCLUSION: The risk of these complications particularly increased after previous temporalis muscle resection. Based on this finding, we believe that preservation of the temporalis muscle may help to decrease postoperative complications after autologous cranioplasty. Keywords : Bone resorption, Cranioplasty, Cryopreservation, Decompressive craniectomy, Surgical site infection

Corresponding author : Sang-Dae KIM, neuron19@korea.ac.kr