Table I.

Clinical findings on 4D CT of the elbow.

Elbow		Diagnosis		Value of 4D CT scan
	Age, sex	Before 4D CT	After 4D CT	Diagnosis	Interpretation	Management
1	75, M	Post capitellum ORIF. ?PLRI	Healed fracture with PLRI	+	+	+
2	42, M	Subacute coronoid + radial head#. ?Fragment mobility	Healing fractures. No mobility	+	+	+
3	44, M	Recent dislocation. ?PLRI	Stable elbow	+	+	+
4	29, M	?PLRI	Stable elbow	+	+	+
5	19, M	OCD + loose body	OCD + loose body	-	-	-
6	28, F	?PLRI	Stable elbow	+	+	+
7	48, M	Pain and clicking. Malunited radial head fracture	Clicking from loose body	++	+	+
8	42, F	ORIF radial head. ?Implant impingement	Implant impingement confirmed	+	+	+
9	20, M	Hemimelia +/- PLRI	Hemimelia + global instability	++	+	+
10	48, M	Early OA	Normal joint	+	+	+
11	47, F	Post radial head excision. ?Bony impingement	Radial tuberosity impingement and scar tissue	+	+	+
12	68, F	Bicipital tendinitis vs. impingement	Bicipital tendinitis. Early OA.	+	+	+
13	62, M	? Radial head instability. Previous distal biceps repair	Stable joint	+	+	+
14	57, M	Bicipital impingement	Biceps tendinitis	+	+	+
15	57, F	Bicipital impingement	Bicipital impingement, osteophyte	+	+	-
16	84, M	Bicipital impingement	No impingement. Partial biceps tear	+	+	+
17	57, M	Bicipital tendinitis. ?impingement	Bicipital tendinitis, partial tear. No impingement	+	+	+
18	69, M	Pain. ?OA	Bicipital tendinitis	++	+	+
19	77, F	Bicipital tendinitis + radial tuberosity impingement	Bicipital tendinitis, partial tear + radial tuberosity impingement	+	+	+
20	57, M	Bicipital impingement	Biceps tendinitis	+	+	+
21	48, M	Pain after distal biceps repair. ?Tuberosity impingement	Biceps tendinitis	+	+	+
22	69, M	Pain. ?OA	Bicipital tendinitis	++	+	+
23	71, M	OA + radial head implant loosening	OA + radial head implant loosening	-	+	-
24	56, M	OA + loose bodies	OA + loose bodies	-	-	-
25	48, M	OA + ulnar neuritis + stiffness	OA + impinging osteophytes	-	+	-
26	72, M	OA + loose bodies	OA + loose bodies, osteophytes	-	+	-
27	77, M	OA	OA + RC instability	+	+	+
28	25, M	OA + stiffness	OA + impinging osteophytes	-	+	-
29	55, M	OA + loose body	OA + impinging osteophyte	+	+	+
30	77, M	OA	OA + RC instability	+	+	+
31	72, F	OA	OA	-	-	-
32	55, M	OA + clicking + loose bodies	OA. Loose bodies not engaging	+	+	+
33	44, F	OA + instability.	OA + instability	-	+	-
34	74, M	OA + ulna neuritis	OA + instability + ulna neuritis	+	+	+
35	71, F	OA + instability,	OA + instability	-	+	-

4D CT, four-dimensional computed tomography; PLRI, posterolateral rotatory instability; OA, osteoarthritis; RC, radiocapitellar; OCD, osteochondritis dessicans.

Note: Changes in the primary (++) and secondary (+) diagnosis.