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Effect of strabismus surgery on torticollis caused by congenital superior oblique palsy in young children.

Kekunnaya R, Isenberg SJ - Indian J Ophthalmol (2014)

Bottom Line: The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees ( P < 0.0001).The success rate for achieving both criteria was 61.5% (C.I. 35-88%).About one-third required an additional procedure, which led to total normalization of the head position.

View Article: PubMed Central - PubMed

Affiliation: Jasti V Ramanamma Children's Eye Care Centre, LV Prasad Eye Institute, Hyderabad, India; Department of Ophthalmology, Jules Stein Eye Institute, Los Angeles, USA, .

ABSTRACT

Purpose: To evaluate the outcome of strabismus surgery for congenital superior oblique palsy (SOP) in relation to correction of head tilt and hypertropia. The cohort of patients mainly involved very young children. This is the first study to use a standardized instrument to objectively measure torticollis before and after surgery.

Materials and methods: A non-comparative interventional case series of 13 cases of congenital superior oblique palsy with head tilt, who underwent simultaneous superior oblique tuck and inferior oblique recession between Jan 2000 and Dec 2008, were studied.

Results: The mean duration of SOP until surgery was 36.8 months. Of the 12 unilateral cases, 8 were right-sided. Mean follow-up period was 17 months (range 7-36). The outcome was determined at the last follow-up. Mean pre-and post-operative hypertropia (p.d.) in forced primary position was 19 ± 7 and 2 ± 6, respectively ( P < 0.0001). The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees ( P < 0.0001). Success, defined as hypertropia <5 PD and head tilt less than 5 degrees, was achieved in 69% (9/13. C.I. 42-88%) and 85% (11/13. C.I. 56-96%), respectively. The success rate for achieving both criteria was 61.5% (C.I. 35-88%). Five patients required additional surgery; usually a contralateral inferior rectus muscle recession, which was successful in all cases. One case developed asymptomatic Brown syndrome (7.69% - C.I. 6.7-22.2).

Conclusions: Simultaneous superior oblique tuck and inferior oblique muscle recession can successfully treat selected cases of congenital superior oblique palsy. About one-third required an additional procedure, which led to total normalization of the head position.

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Scatter plot showing that there were no significant correlations between the amount of SO tuck and Head tilt
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Figure 2: Scatter plot showing that there were no significant correlations between the amount of SO tuck and Head tilt

Mentions: The outcome was determined at the last follow-up. The mean pre- and post-operative hypertropia (P.D.) in forced primary position was 19 ± 7 and 2 ± 6, respectively (P < 0.0001). The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees (P < 0.0001). Success, defined as hypertropia <5 PD and head tilt less than 5 degrees, was achieved in 69% (9/13 – C.I. 42-88%) and 85% (11/13 - C.I. 56-96%) of cases, respectively. When both criteria were met, the success rate was 61.5% (C.I. 35 to 88% - Table 1). There was no persistent overaction of the inferior oblique muscle in any of the cases. Subjectively, there was modest improvement in the superior oblique function. There was no correlation between the amount of head tilt, hypertropia, and the length of SO tendon tuck both pre-and post-operatively [Figs. 2 and 3].


Effect of strabismus surgery on torticollis caused by congenital superior oblique palsy in young children.

Kekunnaya R, Isenberg SJ - Indian J Ophthalmol (2014)

Scatter plot showing that there were no significant correlations between the amount of SO tuck and Head tilt
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4061671&req=5

Figure 2: Scatter plot showing that there were no significant correlations between the amount of SO tuck and Head tilt
Mentions: The outcome was determined at the last follow-up. The mean pre- and post-operative hypertropia (P.D.) in forced primary position was 19 ± 7 and 2 ± 6, respectively (P < 0.0001). The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees (P < 0.0001). Success, defined as hypertropia <5 PD and head tilt less than 5 degrees, was achieved in 69% (9/13 – C.I. 42-88%) and 85% (11/13 - C.I. 56-96%) of cases, respectively. When both criteria were met, the success rate was 61.5% (C.I. 35 to 88% - Table 1). There was no persistent overaction of the inferior oblique muscle in any of the cases. Subjectively, there was modest improvement in the superior oblique function. There was no correlation between the amount of head tilt, hypertropia, and the length of SO tendon tuck both pre-and post-operatively [Figs. 2 and 3].

Bottom Line: The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees ( P < 0.0001).The success rate for achieving both criteria was 61.5% (C.I. 35-88%).About one-third required an additional procedure, which led to total normalization of the head position.

View Article: PubMed Central - PubMed

Affiliation: Jasti V Ramanamma Children's Eye Care Centre, LV Prasad Eye Institute, Hyderabad, India; Department of Ophthalmology, Jules Stein Eye Institute, Los Angeles, USA, .

ABSTRACT

Purpose: To evaluate the outcome of strabismus surgery for congenital superior oblique palsy (SOP) in relation to correction of head tilt and hypertropia. The cohort of patients mainly involved very young children. This is the first study to use a standardized instrument to objectively measure torticollis before and after surgery.

Materials and methods: A non-comparative interventional case series of 13 cases of congenital superior oblique palsy with head tilt, who underwent simultaneous superior oblique tuck and inferior oblique recession between Jan 2000 and Dec 2008, were studied.

Results: The mean duration of SOP until surgery was 36.8 months. Of the 12 unilateral cases, 8 were right-sided. Mean follow-up period was 17 months (range 7-36). The outcome was determined at the last follow-up. Mean pre-and post-operative hypertropia (p.d.) in forced primary position was 19 ± 7 and 2 ± 6, respectively ( P < 0.0001). The head tilt reduced from mean of 17 ± 9 to 2 ± 2 degrees ( P < 0.0001). Success, defined as hypertropia <5 PD and head tilt less than 5 degrees, was achieved in 69% (9/13. C.I. 42-88%) and 85% (11/13. C.I. 56-96%), respectively. The success rate for achieving both criteria was 61.5% (C.I. 35-88%). Five patients required additional surgery; usually a contralateral inferior rectus muscle recession, which was successful in all cases. One case developed asymptomatic Brown syndrome (7.69% - C.I. 6.7-22.2).

Conclusions: Simultaneous superior oblique tuck and inferior oblique muscle recession can successfully treat selected cases of congenital superior oblique palsy. About one-third required an additional procedure, which led to total normalization of the head position.

Show MeSH
Related in: MedlinePlus