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Osteonecrosis of the knee after arthroscopic partial meniscectomy.

Son IJ, Kim MK, Kim JY, Kim JG - Knee Surg Relat Res (2013)

Bottom Line: Magnetic resonance imaging showed rapid progression of osteonecrosis of the medial femoral condyle.Unicompartmental knee arthroplasty was performed after 9 months of conservative therapy.The patient is now free from pain during daily activities.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedic Surgery, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.

ABSTRACT
Osteonecrosis of the femoral condyle is known as an uncommon complication after arthroscopic meniscectomy. The lesion of osteonecrosis can be irreversible, thus early detection of the disease is crucial for treatment. A 50-year-old male patient without known risk factors of osteonecrosis developed increasing knee pain after arthroscopic partial meniscectomy. Magnetic resonance imaging showed rapid progression of osteonecrosis of the medial femoral condyle. Unicompartmental knee arthroplasty was performed after 9 months of conservative therapy. The patient is now free from pain during daily activities. It might be important to remind that if the patient's pain after arthroscopic partial meniscectomy is severe than expected, clinical doctors should pay attention to the possibility of ongoing osteonecrosis of the femoral condyle.

No MeSH data available.


Related in: MedlinePlus

Radiologic evaluation after unicompartmental knee arthroplasty. (A) Anteroposterior radiograph showing a medial unicondylar knee replacement. (B) Lateral radiograph showing a medial unicondylar knee replacement.
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Figure 5: Radiologic evaluation after unicompartmental knee arthroplasty. (A) Anteroposterior radiograph showing a medial unicondylar knee replacement. (B) Lateral radiograph showing a medial unicondylar knee replacement.

Mentions: The MRI scan revealed cartilage delamination of the medial femoral condyle that exhibited a low intensity signal on the T1-weighted image and a high intensity signal on the T2-weighted image (Fig. 3). Since the symptoms deteriorated during three months of medication therapy, another MRI examination was performed six months postoperatively, which showed more extensive cartilage delamination and cyst formation. An MRI scan taken nine months postoperatively showed an enlarged cyst, increased swelling around the bone, and severe cartilage delamination, all of which were the symptoms of osteonecrosis (Fig. 4). Thus, unicompartmental knee arthroplasty was performed (Fig. 5). Currently, at six months after surgery, the patient has been pain-free and returned to work.


Osteonecrosis of the knee after arthroscopic partial meniscectomy.

Son IJ, Kim MK, Kim JY, Kim JG - Knee Surg Relat Res (2013)

Radiologic evaluation after unicompartmental knee arthroplasty. (A) Anteroposterior radiograph showing a medial unicondylar knee replacement. (B) Lateral radiograph showing a medial unicondylar knee replacement.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3767902&req=5

Figure 5: Radiologic evaluation after unicompartmental knee arthroplasty. (A) Anteroposterior radiograph showing a medial unicondylar knee replacement. (B) Lateral radiograph showing a medial unicondylar knee replacement.
Mentions: The MRI scan revealed cartilage delamination of the medial femoral condyle that exhibited a low intensity signal on the T1-weighted image and a high intensity signal on the T2-weighted image (Fig. 3). Since the symptoms deteriorated during three months of medication therapy, another MRI examination was performed six months postoperatively, which showed more extensive cartilage delamination and cyst formation. An MRI scan taken nine months postoperatively showed an enlarged cyst, increased swelling around the bone, and severe cartilage delamination, all of which were the symptoms of osteonecrosis (Fig. 4). Thus, unicompartmental knee arthroplasty was performed (Fig. 5). Currently, at six months after surgery, the patient has been pain-free and returned to work.

Bottom Line: Magnetic resonance imaging showed rapid progression of osteonecrosis of the medial femoral condyle.Unicompartmental knee arthroplasty was performed after 9 months of conservative therapy.The patient is now free from pain during daily activities.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedic Surgery, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.

ABSTRACT
Osteonecrosis of the femoral condyle is known as an uncommon complication after arthroscopic meniscectomy. The lesion of osteonecrosis can be irreversible, thus early detection of the disease is crucial for treatment. A 50-year-old male patient without known risk factors of osteonecrosis developed increasing knee pain after arthroscopic partial meniscectomy. Magnetic resonance imaging showed rapid progression of osteonecrosis of the medial femoral condyle. Unicompartmental knee arthroplasty was performed after 9 months of conservative therapy. The patient is now free from pain during daily activities. It might be important to remind that if the patient's pain after arthroscopic partial meniscectomy is severe than expected, clinical doctors should pay attention to the possibility of ongoing osteonecrosis of the femoral condyle.

No MeSH data available.


Related in: MedlinePlus