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Chondromalacia Patella among Military Recruits with Anterior Knee Pain: Prevalence and Association with Patellofemoral Malalignment.
Indian J Orthop 2019 Nov-Dec; 53(6):682-688IJ

Abstract

Background

The aim of this study was to investigate the frequency of chondromalacia patella (CMP) and to evaluate its relation with trochlear morphometric and patellofemoral alignment measurements as well as with edema in superolateral region of Hoffa's fat pad (SHFP) in military recruits with anterior knee pain (AKP).

Materials and Methods

Knee magnetic resonance imaging examinations of 288 military recruits with AKP were retrospectively evaluated. Patellar cartilage lesions were graded using modified Noyes system. Quantitative measurements of trochlear morphology (sulcus angle, trochlear sulcus depth, and lateral trochlear inclination [LTI]) and patellofemoral alignment (patellar translation [PT], lateral patellofemoral angle (LPA), Insall-Salvati index, and tibial tuberosity-trochlear groove distance) were made. The SHFP region was assessed for the presence of edema. Mean values of measurements in knees with and without CMP and in knees with early and advanced stage CMP were compared.

Results

We found CMP in 169 (58.7%) patients. Patients with CMP demonstrated a significantly greater sulcus angle (P = 0.012), smaller LTI (P = 0.004), greater PT (P = 0.01), smaller LPA (P = 0.036), greater Insall-Salvati ratio (P = 0.034), and higher incidence of SHFP edema (P = 0.001) compared to those without CMP. While none of the measurements were associated with the severity of cartilage damage, the incidence of SHFP edema was significantly correlated with the severity of CMP (P = 0.001).

Conclusion

CMP is a common disorder among military recruits with AKP. Patellofemoral malalignment is an important contributory factor in the development of CMP, and the presence of edema in SHFP may be a strong indicator of underlying severe CMP in this population.

Authors+Show Affiliations

Department of Radiology, University of Health Sciences, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.Department of Radiology, University of Health Sciences, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31673166

Citation

Özdemir, Meltem, and Rasime Pelin Kavak. "Chondromalacia Patella Among Military Recruits With Anterior Knee Pain: Prevalence and Association With Patellofemoral Malalignment." Indian Journal of Orthopaedics, vol. 53, no. 6, 2019, pp. 682-688.
Özdemir M, Kavak RP. Chondromalacia Patella among Military Recruits with Anterior Knee Pain: Prevalence and Association with Patellofemoral Malalignment. Indian J Orthop. 2019;53(6):682-688.
Özdemir, M., & Kavak, R. P. (2019). Chondromalacia Patella among Military Recruits with Anterior Knee Pain: Prevalence and Association with Patellofemoral Malalignment. Indian Journal of Orthopaedics, 53(6), pp. 682-688. doi:10.4103/ortho.IJOrtho_655_18.
Özdemir M, Kavak RP. Chondromalacia Patella Among Military Recruits With Anterior Knee Pain: Prevalence and Association With Patellofemoral Malalignment. Indian J Orthop. 2019;53(6):682-688. PubMed PMID: 31673166.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chondromalacia Patella among Military Recruits with Anterior Knee Pain: Prevalence and Association with Patellofemoral Malalignment. AU - Özdemir,Meltem, AU - Kavak,Rasime Pelin, PY - 2019/11/2/entrez PY - 2019/11/2/pubmed PY - 2019/11/2/medline KW - Chondromalacia patella KW - magnetic resonance imaging KW - patellofemoral joint KW - trochlear morphology SP - 682 EP - 688 JF - Indian journal of orthopaedics JO - Indian J Orthop VL - 53 IS - 6 N2 - Background: The aim of this study was to investigate the frequency of chondromalacia patella (CMP) and to evaluate its relation with trochlear morphometric and patellofemoral alignment measurements as well as with edema in superolateral region of Hoffa's fat pad (SHFP) in military recruits with anterior knee pain (AKP). Materials and Methods: Knee magnetic resonance imaging examinations of 288 military recruits with AKP were retrospectively evaluated. Patellar cartilage lesions were graded using modified Noyes system. Quantitative measurements of trochlear morphology (sulcus angle, trochlear sulcus depth, and lateral trochlear inclination [LTI]) and patellofemoral alignment (patellar translation [PT], lateral patellofemoral angle (LPA), Insall-Salvati index, and tibial tuberosity-trochlear groove distance) were made. The SHFP region was assessed for the presence of edema. Mean values of measurements in knees with and without CMP and in knees with early and advanced stage CMP were compared. Results: We found CMP in 169 (58.7%) patients. Patients with CMP demonstrated a significantly greater sulcus angle (P = 0.012), smaller LTI (P = 0.004), greater PT (P = 0.01), smaller LPA (P = 0.036), greater Insall-Salvati ratio (P = 0.034), and higher incidence of SHFP edema (P = 0.001) compared to those without CMP. While none of the measurements were associated with the severity of cartilage damage, the incidence of SHFP edema was significantly correlated with the severity of CMP (P = 0.001). Conclusion: CMP is a common disorder among military recruits with AKP. Patellofemoral malalignment is an important contributory factor in the development of CMP, and the presence of edema in SHFP may be a strong indicator of underlying severe CMP in this population. SN - 0019-5413 UR - https://www.unboundmedicine.com/medline/citation/31673166/Chondromalacia_Patella_among_Military_Recruits_with_Anterior_Knee_Pain:_Prevalence_and_Association_with_Patellofemoral_Malalignment L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31673166/ DB - PRIME DP - Unbound Medicine ER -