Pathologic Rupture of Flexor Pollicis Longus Tendon Secondaryto Kienbock's Disease: A Case Report / 대한정형외과학회잡지

A pathologic rupture of the flexor pollicis longus tendon secondary to Kienbock disease is extremely rare with only three cases being reported in the literature. We encountered a case of a pathological rupture of the flexor pollicis longus tendon secondary to longstanding Kienbock disease. The treatment included tendon ball insertion after excising the collapsed lunate and a flexor pollicis longus tendon reconstruction with autogenous palmaris longus tendons. Satisfactory results with a restoration of the active motion of the interphalangeal joint of the thumb, maintenance of the preoperative active range of motion of the wrist and markedly reduced pain was achieved after a one year follow up. We describe this case with a review of the relevant literature.

Morphological Study of Femoral Head and Acetabulum Using MRI in Legg-Calve-Perthes Disease / 대한정형외과학회잡지

PURPOSE: We used MRI to evaluate the morphological relationship of the femoral head and acetabulum with changes of hip position in LCP disease. MATERIALS AND METHODS: The MRIs of 35 patients (17 pillar B, 18 pillar C; mean age: 7.8 years old) were reviewed in neutral, abduction, abduction-internal rotation, abduction-internal rotation-flexion, and adduction positions. The measurements included epiphyseal extrusion index (EEI), head coverage (HC), and medial gap ratio (MGR). The congruence of the hip joint and adjacent soft tissue changes were also studied. RESULTS: Decreased EEI and increased HC in both pillar B and C from neutral to the abduction and abduction- internal rotation positions were statistically significant (p<0.05). However, in decreased MGR, statistical significance was seen only in pillar B. The increase of MGR in pillar C, from neutral to adduction, did not show statistical significance due to the tension of the soft tissues lying lateral to the hip joint. CONCLUSION: This study supports the basic concept of containment treatment in pillar B and suggests a rationale for valgus femoral osteotomy in cases of pillar C with hinge abduction.