Lateral displacement, sulcus angle and trochlear angle are associated with early patellofemoral osteoarthritis following anterior cruciate ligament reconstruction

Macri, Erin M., Culvenor, Adam G., Morris, Hayden G., Whitehead, Timothy S., Russell, Trevor G., Khan, Karim M. and Crossley, Kay M. (2017) Lateral displacement, sulcus angle and trochlear angle are associated with early patellofemoral osteoarthritis following anterior cruciate ligament reconstruction. Knee Surgery, Sports Traumatology, Arthroscopy, . doi:10.1007/s00167-017-4571-1


Author Macri, Erin M.
Culvenor, Adam G.
Morris, Hayden G.
Whitehead, Timothy S.
Russell, Trevor G.
Khan, Karim M.
Crossley, Kay M.
Title Lateral displacement, sulcus angle and trochlear angle are associated with early patellofemoral osteoarthritis following anterior cruciate ligament reconstruction
Journal name Knee Surgery, Sports Traumatology, Arthroscopy   Check publisher's open access policy
ISSN 1433-7347
0942-2056
Publication date 2017-05-09
Year available 2017
Sub-type Article (original research)
DOI 10.1007/s00167-017-4571-1
Open Access Status Not yet assessed
Total pages 8
Place of publication Heidelberg, Germany
Publisher Springer Verlag
Language eng
Subject 2746 Surgery
2732 Orthopedics and Sports Medicine
Abstract Purpose: Patellofemoral osteoarthritis (PFOA) occurs in approximately half of anterior cruciate ligament (ACL)-injured knees within 10–15 years of trauma. Risk factors for post-traumatic PFOA are poorly understood. Patellofemoral alignment and trochlear morphology may be associated with PFOA following ACL reconstruction (ACLR), and understanding these relationships, particularly early in the post-surgical time period, may guide effective early intervention strategies. In this study, patellofemoral alignment and trochlear morphology were investigated in relation to radiographic features of early PFOA 1-year post-ACLR. Methods: Participants (aged 18–50 years) had undergone ACLR approximately 1 year prior to being assessed. Early PFOA was defined as presence of a definite patellofemoral osteophyte on lateral or skyline radiograph. Sagittal and axial plane alignment and trochlear morphology were estimated using MRI. Using logistic regression, the relationship between alignment or morphology and presence of osteophytes was evaluated. Results: Of 111 participants [age 30 ± 8.5; 41 (37%) women], 19 (17%) had definite osteophytes, only two of whom had had patellofemoral chondral lesions noted intra-operatively. One measure of patellar alignment (bisect offset OR 1.1 [95% confidence interval 1.0, 1.2]) and two measures of trochlear morphology (sulcus angle OR 1.1 [1.0, 1.2], trochlear angle OR 1.2 [1.0, 1.5]) were associated with patellofemoral osteophytes. Conclusions: Patellofemoral malalignment and/or altered trochlear morphology were associated with PFOA 1 year following ACLR compared to individuals post-ACLR without these features. Clarifying the role of alignment and morphology in post-traumatic PFOA may contribute to improving early intervention strategies aimed at secondary prevention. Level of evidence: IV.
Keyword Alignment
Anterior cruciate ligament
Morphology
Osteoarthritis
Patellofemoral joint
Reconstruction
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
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Created: Sun, 24 Dec 2017, 05:49:27 EST