Two-center validation of the Oulu resorption score for bone flap resorption after autologous cranioplasty

Korhonen, Tommi; Posti, Jussi P.; Niinimäki, Jaakko; Serlo, Willy; Salokorpi, Niina; Tetri, Sami

doi:10.1016/j.clineuro.2021.107083

Cited by 11 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…43 Additionally, a multicentre study reported that it would take two years to stabilise the bone flap and therefore recommended a 2-year follow-up as an optimal time frame. 44 Custom-made PEEK implants exhibit superior aesthetic outcomes as it is patient-specific. An analysis of 12 patients with PEEK implants using root mean square error between the presurgical virtual position and the postoperative actual position of the implant revealed that PEEK implants manufactured in a patient-specific style demonstrated highly accurate positioning.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Cranioplasty in Oman

Al Alawi,

Al Furqani,

Al Shaqsi

et al. 2024

Sultan Qaboos Univ Med J

View full text Add to dashboard Cite

Objectives: Cranioplasty is a complex craniofacial and neurosurgical procedure, which aims to reinstate the architecture of the cranial vault and elevate both aesthetic and neurological function. Several reconstructive materials have been thoroughly explored in the search for the optimal solution for cranioplasty. Methods: A retrospective analysis was carried out on all cranioplasty procedures performed at Khoula Hospital from 2012 to 2022. This study encompassed a total of 47 patients. The data collection process involved gathering demographic information, the characteristics of the cranial defect, and any complications that occurred post-operatively. Results: The most common cause of cranial defects is craniectomy following traumatic head injury (70.2%), along with excision of fibrous dysplasia (10.6%). The most frequently utilized material for cranial repair was autologous bone graft (n=28), followed by PEEK (n=14). Interestingly, the replacement of bone graft from previous craniectomy showed a notably high resorption rate (71.4%), in contrast to split calvarial grafts (0%) and other types of bone grafts (14.3%). Additionally, delayed graft infection was observed in 3.6% of the bone graft group and 7.1% of the PEEK group. Conclusion: Patient-specific alloplastic implants such as PEEK, have gained popularity for large and complex cranioplasty, as they provide excellent aesthetic outcomes and leave no donor site morbidity. In contrast, bone graft remains the gold stander for small to medium sized cranial defects. Keywords: Cranial Reconstruction; Cranioplasty; bone graft; PEEK

show abstract

Section: Discussionmentioning

confidence: 99%

“… 43 Additionally, a multicentre study reported that it would take two years to stabilise the bone flap and therefore recommended a 2-year follow-up as an optimal time frame. 44 …”

Section: Discussionmentioning

confidence: 99%

Cranioplasty in Oman

Al Alawi,

Al Furqani,

Al Shaqsi

et al. 2024

Sultan Qaboos Univ Med J

View full text Add to dashboard Cite

show abstract

“…The long-term issue of bone flap resorption that necessitates cranioplasty revision surgery in 10% of autologous cranioplasty patients 20 is not fully accounted for, as it mainly occurs in the late phase during the first two postoperative years. 21 …”

Section: Discussionmentioning

confidence: 99%

Decompressive craniectomy to cranioplasty: a retrospective observational study using Hospital Episode Statistics in England

Mee,

Harris,

Korhonen

et al. 2024

BMJ Surg Interv Health Technologies

View full text Add to dashboard Cite

ObjectivesTo investigate the longitudinal trends of decompressive craniectomy (DC) following traumatic brain injury (TBI) or stroke and explore whether the timing of cranial reconstruction affected revision or removal rates using Hospital Episode Statistics (HES) between 2014 and 2019.DesignRetrospective observational cohort study using HES. The time frame definitions mirror those often used in clinical practice.SettingHES data from neurosurgical centres in England.ParticipantsHES data related to decompressive craniectomy procedures and cranioplasty following TBI or stroke between 2014 and 2019.Main outcome measuresThe primary outcome was the timing and rate of revision/removal compared with cranioplasty within <12 weeks to ≥12 weeks.ResultsThere were 4627 DC procedures, of which 1847 (40%) were due to head injury, 1116 (24%) were due to stroke, 728 (16%) were due to other cerebrovascular diagnoses, 317 (7%) had mixed diagnosis and 619 (13%) had no pre-specified diagnoses. The number of DC procedures performed per year ranged from 876 in 2014–2015 to 967 in 2018–2019. There were 4466 cranioplasty procedures, with 309 (7%) revisions and/or removals during the first postoperative year. There was a 33% increase in the overall number of cranioplasty procedures performed within 12 weeks, and there were 1823 patients who underwent both craniectomy and cranioplasty during the study period, with 1436 (79%) having a cranioplasty within 1 year. However, relating to the timing of cranial reconstruction, there was no evidence of any difference in the rate of revision or removal surgery in the early timing group (6.5%) compared with standard care (7.9%) (adjusted HR 0.93, 95% CIs 0.61 to 1.43; p=0.75).ConclusionsOverall number of craniectomies and the subsequent requirements for cranioplasty increased steadily during the study period. However, relating to the timing of cranial reconstruction, there was no evidence of an overall difference in the rate of revision or removal surgery in the early timing group.

show abstract

“…Any change in the area of the split inner table graft due to bone resorption was calculated based on the difference in the area of the inner table graft as seen in the images obtained on postoperative day 1 and 12-18 months after surgery. The Oulu resorption score was also calculated and reported (13,14).…”

Section: Patient Population and Data Collectionmentioning

confidence: 99%

Acceptable durability of split inner table graft for the reconstruction of a bone defect in pterional craniotomies: a case series

2023

View full text Add to dashboard Cite

ObjectiveDuring a pterional craniotomy, the bone defect was reconstructed by a surgical technique using an autogenous bone graft instead of commercially available alloplastic materials. The technical feasibility, durability of the grafted bone, and cosmetic outcome were all evaluated.MethodsAfter a pterional craniotomy was performed, the bone defect at the frontobasal burr hole and drilled sphenoid wing was reconstructed using an autogenous split inner table graft (1 cm × 2 cm) harvested from the craniotomy bone flap.ResultsThe bone reconstruction technique was successfully performed on nine patients with intracranial aneurysms. After 12–19 months from the surgery, a volumetry study using three-dimensional skull images reconstructed from computed tomography angiography showed a minimal decrease in the area of the split inner table graft due to bone resorption in six patients, which ranged from 5.7% to 14.8%. In the other three patients, the bone resorption was more substantial, ranging from 21.2% to 27.5%. However, in the three latter cases, the resorption was mainly limited to the posterior part of the split inner table graft covered by the temporalis muscle and did not affect the cosmetic outcomes. The resultant cosmetic outcomes for the nine patients were all favorable, with only a slight or no anterior temporal hollow.ConclusionThe proposed surgical technique using a split inner table graft harvested from the craniotomy bone flap seems viable for reconstructing the bone defect at the frontobasal burr hole and drilled sphenoid wing after a pterional craniotomy.

show abstract

Two-center validation of the Oulu resorption score for bone flap resorption after autologous cranioplasty

Cited by 11 publications

References 40 publications

Cranioplasty in Oman

Cranioplasty in Oman

Decompressive craniectomy to cranioplasty: a retrospective observational study using Hospital Episode Statistics in England

Acceptable durability of split inner table graft for the reconstruction of a bone defect in pterional craniotomies: a case series

Contact Info

Product

Resources

About