Clinical Biomechanics
This quiz concerns clinical biomechanics. The following table asks for classification information about named joints. Fill in the blanks.
| JOINT |
Ovoid/ Sellar |
Modified/ Unmodified |
Close Pack Position |
Least Pack Position |
Conjunct Rotation with Close Packing |
| Glenohumeral |
|
|
|
|
|
| Ulnohumeral |
|
|
|
|
|
| 1st CMT |
|
|
|
|
|
| 2nd MCP |
|
|
|
|
|
| Hip |
|
|
|
|
|
| Tibiofemoral |
|
|
|
|
|
| Ankle |
|
|
|
|
|
| Subtalar |
|
|
|
|
|
| JOINT |
Ovoid/ Sellar |
Modified/ Unmodified |
Close Pack Position |
Least Pack Position |
Conjunct Rotation with Close Packing |
| Glenohumeral |
OVOID |
UNMODIFIED |
90 ° ABDUCTION/ 90 ° LATERAL ROTATION/ EXTENSION |
30 ° ELEVATION/ 30 ° ABDUCTION/ 30 ° MEDIAL ROTATION |
NONE. THIS IS AN UMODIFIED OVOID |
| Ulnohumeral |
SELLAR |
MODIFIED |
EXTENSION/ PRONATION |
110 ° (GEOMETRIC MEASURE) |
MEDIAL |
| 1st CMT |
SELLAR |
UNMODIFIED |
FULL OPPOSITION |
RESTING POSITION OF THE HAND |
MEDIAL |
| 2nd MCP |
OVOID |
MODIFIED |
FULL FLEXION |
RESTING POSITION OF THE HAND |
LATERAL |
| Hip |
OVOID |
UNMODIFIED |
EXTENSION/ MEDIAL ROTATION/ ??ADDUCTION |
70 ° FLEXION/ 30 ° LATERAL ROTATION/ 30 ° ABDUCTION |
NONE. THIS IS AN UMODIFIED OVOID |
| Tibiofemoral |
OVOID |
MODIFIED |
FULL WEIGHT BEARING EXTENSION |
40 DEGS FLEXION |
LATERAL |
| Ankle |
SELLAR |
MODIFIED |
DORSI-FLEXION |
80 ° (GEOMETRIC MEASURE) |
LATERAL |
| Subtalar |
SELLAR* |
MODIFIED |
EVERSION |
10 ° INVERSION |
MEDIAL |
*Each surface of the subtalar joint is structurally a modified ovoid but each must function with the other therefore the joint is functionally one surface. The posterior surface of the calcaneus is convex while the anterior is concave. Consequently, the joint functions as a concavoconvex surface ie a modified sellar.
References can be found in Gray's Anatomy 36th edition and on and in your course notes (for those of you who have taken manual therapy courses).
Disclaimer:
The assessment and treatment techniques depicted or described in this site are not intended to replace formal instruction in orthopedic manual or any other type of physical therapy. They are intended to review, augment and facilitate the knowledge and skills previously gained on manual therapy or other course and to stimulate the untrained or trainee physical therapist to increase the bounds of his or her knowledge and skill base.
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