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Application of different patella height indices in patients undergoing total knee arthroplasty
- Source :
- Journal of Orthopaedic Surgery and Research, Vol 12, Iss 1, Pp 1-6 (2017), Journal of Orthopaedic Surgery and Research
- Publication Year :
- 2017
- Publisher :
- BMC, 2017.
-
Abstract
- Background One complication of total knee arthroplasty (TKA) is patella baja (PB). Patellar tendon shortening and joint line elevation are two main causes of PB. The purpose of this study was to determine the incidence of PB before and after TKA by measuring the patellar height and provide evidence for choosing a suitable index. Methods In total, 256 consecutive patients who underwent primary TKA were included in this study. Radiographic measurements were performed; the Insall–Salvati (IS) index, modified IS (MIS) index, Blackburne–Peel (BP) index, and Caton–Deschamps (CD) index were computed; and the incidence of PB was calculated before and after the operation. The consistency between the IS and MIS indices and between the BP and CD indices was analyzed. Results The preoperative incidence of true PB (TPB) and pseudo-PB (PPB) was 9.4 and 0.8%, respectively. The postoperative incidence of TPB and PPB was 10.2 and 9.0%, respectively. The consistency between the IS and MIS indices was moderate preoperatively (pre-kappa = 0.602) and postoperatively (post-kappa = 0.742). The consistency between the BP and CD indices was moderate preoperatively (pre-kappa = 0.742) and good postoperatively (post-kappa = 0.797). Conclusion The incidence of PB, especially PPB, increased after TKA. The CD and BP indices are of greater importance for the diagnosis of PB after TKA. The MIS index is a better choice than the IS index to measure the length of the patellar tendon. To measure the height of the joint line, the BP index is better postoperatively and the CD index is better preoperatively.
- Subjects :
- Male
musculoskeletal diseases
medicine.medical_specialty
lcsh:Diseases of the musculoskeletal system
Radiography
Radiographic measurement
Total knee arthroplasty
Preoperative care
03 medical and health sciences
0302 clinical medicine
Postoperative Complications
lcsh:Orthopedic surgery
Preoperative Care
Medicine
Humans
Orthopedics and Sports Medicine
In patient
Single-Blind Method
Arthroplasty, Replacement, Knee
Aged
030222 orthopedics
business.industry
Incidence (epidemiology)
030229 sport sciences
Patella
Middle Aged
musculoskeletal system
Consistency test
lcsh:RD701-811
Orthopedic surgery
Surgery
Female
Patella baja
lcsh:RC925-935
business
Complication
Nuclear medicine
Research Article
Subjects
Details
- Language :
- English
- Volume :
- 12
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of Orthopaedic Surgery and Research
- Accession number :
- edsair.doi.dedup.....046fb0e3a04f3529169b498bdc5b59f2