18 May 2026
: Case report 
Total Knee Arthroplasty for Secondary Osteoarthritis in Patients With Multiple Hereditary Exostoses: A Case Series
Unusual or unexpected effect of treatment, Rare disease
Mitsuyuki Kenai ABCDEF 1, Naoki Nakano ABCDEF 1*, Masanori Tsubosaka ABCDEF 1, Tomoyuki Kamenaga ABCDEF 1, Yuichi Kuroda
ABCDEF 1, Shinya Hayashi ABCDEF 1, Ryosuke Kuroda ABCDEF 1, Tomoyuki Matsumoto ABCDEF 1
DOI: 10.12659/AJCR.952617
Am J Case Rep 2026; 27:e952617
Figure 2 Case 2: Preoperative AP and lateral radiographs showing valgus deformity with MHE and retained femoral hardware. The HKA angle was 191° (A, B). Postoperative AP and lateral radiographs after TKA showed improvement of the HKA angle to 183° (C, D).